Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Electricity: motive power systems

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
318700000 SYNCHRONOUS MOTOR SYSTEMS 1527
318560000 POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) 447
318445000 AUTOMATIC AND/OR WITH TIME-DELAY MEANS (E.G., AUTOMATIC STARTING AND/OR STOPPING) 273
318727000 INDUCTION MOTOR SYSTEMS 251
318494000 ARMATURE (OR PRIMARY) CIRCUIT CONTROL 164
318139000 BATTERY-FED MOTOR SYSTEMS 163
318362000 BRAKING 151
318490000 WITH SIGNALS, METERS, RECORDERS OR TESTING DEVICES 136
318003000 WITH PARTICULAR MOTOR-DRIVEN LOAD DEVICE 87
318116000 NONMAGNETIC MOTOR 78
318434000 LIMITATION OF MOTOR LOAD, CURRENT, TORQUE OR FORCE (E.G., PREVENTING OVERLOAD) 75
318034000 PLURAL, DIVERSE OR DIVERSELY CONTROLLED ELECTRIC MOTORS 67
318696000 OPEN-LOOP STEPPING MOTOR CONTROL SYSTEMS 62
318135000 LINEAR-MOVEMENT MOTORS 47
318119000 RECIPROCATING OR OSCILLATING MOTOR 36
318432000 CONSTANT MOTOR CURRENT, LOAD AND/OR TORQUE CONTROL 34
318430000 MOTOR LOAD, ARMATURE CURRENT OR FORCE CONTROL DURING STARTING AND/OR STOPPING 25
318280000 MOTOR-REVERSING 23
318255000 PLURAL DIVERSE MOTOR CONTROLS 19
318140000 GENERATOR-FED MOTOR SYSTEMS HAVING GENERATOR CONTROL 16
318558000 MISCELLANEOUS 16
318114000 IMPACT, MECHANICAL SHOCK, OR VIBRATION-PRODUCING MOTORS 15
318538000 MOTOR STRUCTURE ADJUSTMENT OR CONTROL 14
318440000 HAVING PLURAL, DIVERSE OR DIVERSELY CONTROLLED SOURCES 14
318016000 SUPPLIED OR CONTROLLED BY SPACE-TRANSMITTED ELECTROMAGNETIC OR ELECTROSTATIC ENERGY (E.G., BY RADIO) 11
318244000 ALTERNATING CURRENT COMMUTATING MOTORS 10
318254100 SWITCHED RELUCTANCE MOTOR COMMUTATION CONTROL 10
318689000 TORQUING MOTORS 10
318017000 PORTABLE-MOUNTED MOTOR AND/OR PORTABLE-MOUNTED ELECTRICAL SYSTEMS THEREFOR 6
318521000 FIELD OR SECONDARY CIRCUIT CONTROL 5
20100019714ALTERNATING CURRENT MACHINE WITH INCREASED TORQUE ABOVE AND BELOW RATED SPEED FOR HYBRID ELECTRIC PROPULSION SYSTEMS - The machine in accordance with the present disclosure is an AC machine whose pole numbers can be switched (from pole p01-28-2010
20090256514System for suppressing wheel acceleration after a slip - A power system having a DC electric motor is disclosed. The DC electric motor may include an armature and a field coil electrically connected in series with the armature, the field coil having an input and an output. The power system may also include an additional electrical path. Additionally, the power system may include one or more current-control elements that control one or more aspects of electrical activity in the additional electrical path, which may include, when inductance of the field coil generates a higher voltage at the output than at the input in response to a decrease in electric current through the field coil, allowing electric current to flow from the output, through the additional electrical path, to the input without flowing through the armature.10-15-2009
20090206786METHOD OF CONTROLLING A REVERSIBLE ELECTRIC MACHINE - A method of preparing a reversible electric machine with a phase for starting a heat engine of a vehicle that is equipped with an automatic start/stop system, whereby said machine comprises a rotor which is connected to the heat engine. The method comprises the following steps consisting in detecting an action prior to a heat engine start command and applying a magnetizing electric current to the rotor of the machine upon detection of the action.08-20-2009
20110025248MULTI-PHASE DC/DC BOOST CONVERTER - A method and an apparatus are provided for balancing current for each of a plurality of similar phases of a DC/DC boost converter. The method includes the step of measuring a voltage drop of each of the plurality of similar phases at predetermined times by measuring the voltage drop across each phase switching device when current is flowing through the switch. The method also includes the steps of calculating current information for each of the plurality of similar phases in response to the voltage drop measured for each of the plurality of similar phases and balancing current for each of the plurality of similar phases in response to the current information of each of the plurality of similar phases.02-03-2011
20130093377PWM OUTPUT APPARATUS AND MOTOR DRIVING APPARATUS - A PWM output apparatus includes a calculating circuit configured to calculate an output width of a PWM output signal of a first signal and a second signal, which have phases different from each other, based on a command value of a PWM output. A comparing circuit compares the output width and a reference period which is set longer than a predetermined dead time period. A PWM output signal generating circuit outputs the PWM output signal to a dead time inserting block as a corrected PWM output signal, when a set/clear signal generating circuit outputs the set signal, and carries out a correction of setting the first signal of the PWM output signal to be inactive to output to the dead time inserting block as the corrected PWM output signal, when the set/clear circuit outputs the clear signal. The dead time inserting block corrects the corrected PWM output signal.04-18-2013
318443000 PERIODIC, REPETITIOUS OR SUCCESSIVE OPERATIONS CONTROL OF MOTOR, INCLUDING "JOG" AND "INCH" CONTROL 5
20090033267Wiper Apparatus - A wiper apparatus includes: a wiper switch; an operation state detection device; a control device having an output section and an input section; a wiper motor; and a power supply. The wiper motor and the control device are connected by a single signal line; the operation state detection device and the input section are connected to the signal line; and the control device performs input of the wiper operating signal from the signal line when a predetermined period of time has elapsed from a point in time when an output of a wiper driving signal from the output section has stopped.02-05-2009
20090096400Starter Relay Control - A starter control system includes a power source, a starter motor, a starter relay, a control module, and an ignition switch. The starter motor is in operative communication with the power source. The starter relay is operatively interposed between the power source and the starter motor, and includes a high side node and a low side node. The starter relay is controllable to selectively enable power delivery from the power source to the starter motor responsive to activation of the high side node and the low side node. The control module includes a high side driver in operative communication with the high side node of the starter relay and a low side driver in operative communication with the low side node of the starter relay. The ignition switch is in operative communication with the high side node of the starter relay and in operative communication with the control module.04-16-2009
20130127389METHOD FOR THE ACTIVATION OF A WINDSCREEN WIPER MOTOR - A method for the activation of a windscreen wiper motor is disclosed, in which the motor is connected to a wiper blade by a drive shaft, which moves the wiper blade between two reversal points of a wiping field in differing movement direction, where the rotation speed and direction of the motor, or the speed of the wiper blade, is detected by a sensor device and is supplied to a control device as an input value. The motor, before reaching the respective reversal point, is switched off, whereupon the drive shaft continues to rotate further by a castor angle up to a standstill, and the wiper blade moves further by a trailing distance. The actual speed of the wiper blade is compared at the switch-off time with a nominal speed, and the motor is operated further for a period of time when the comparison results in a difference in values.05-23-2013
20080303466FAN SYSTEM CONTAINING FAN CONTROL APPARATUS AND FAN CONTROL METHOD - A fan system includes a fan attached to a housing; and a DC motor configured to drive the fan. A fan control apparatus includes a control unit configured to control a rotation speed of the fan so as to periodically change around a specific rotation speed based on data corresponding to a specific rotation speed.12-11-2008
20130175961ELECTRIC POWER TOOL - An electric power tool is configured to control power supply to a motor based on an operational amount of the variable speed switch, and further configured to perform in an intermittent control mode in which power supply to the motor is varied intermittently in the same manner as if an ON operation and an OFF operation of the variable speed switch were repeated. It is also able to perform in a continuous control mode in which power supply to the motor is varied based on the operational amount of the variable speed switch.07-11-2013
20090096400Starter Relay Control - A starter control system includes a power source, a starter motor, a starter relay, a control module, and an ignition switch. The starter motor is in operative communication with the power source. The starter relay is operatively interposed between the power source and the starter motor, and includes a high side node and a low side node. The starter relay is controllable to selectively enable power delivery from the power source to the starter motor responsive to activation of the high side node and the low side node. The control module includes a high side driver in operative communication with the high side node of the starter relay and a low side driver in operative communication with the low side node of the starter relay. The ignition switch is in operative communication with the high side node of the starter relay and in operative communication with the control module.04-16-2009
20130127389METHOD FOR THE ACTIVATION OF A WINDSCREEN WIPER MOTOR - A method for the activation of a windscreen wiper motor is disclosed, in which the motor is connected to a wiper blade by a drive shaft, which moves the wiper blade between two reversal points of a wiping field in differing movement direction, where the rotation speed and direction of the motor, or the speed of the wiper blade, is detected by a sensor device and is supplied to a control device as an input value. The motor, before reaching the respective reversal point, is switched off, whereupon the drive shaft continues to rotate further by a castor angle up to a standstill, and the wiper blade moves further by a trailing distance. The actual speed of the wiper blade is compared at the switch-off time with a nominal speed, and the motor is operated further for a period of time when the comparison results in a difference in values.05-23-2013
20080303466FAN SYSTEM CONTAINING FAN CONTROL APPARATUS AND FAN CONTROL METHOD - A fan system includes a fan attached to a housing; and a DC motor configured to drive the fan. A fan control apparatus includes a control unit configured to control a rotation speed of the fan so as to periodically change around a specific rotation speed based on data corresponding to a specific rotation speed.12-11-2008
20130175961ELECTRIC POWER TOOL - An electric power tool is configured to control power supply to a motor based on an operational amount of the variable speed switch, and further configured to perform in an intermittent control mode in which power supply to the motor is varied intermittently in the same manner as if an ON operation and an OFF operation of the variable speed switch were repeated. It is also able to perform in a continuous control mode in which power supply to the motor is varied based on the operational amount of the variable speed switch.07-11-2013
318161000 WITH FLYWHEEL OR MASSIVE ROTARY MEMBER 5
20090200968Drive Apparatus and Method for Its Operation - A drive apparatus with at least one synchronous motor, a converter and a mechanical energy buffer able to be fed from an energy supply network, which, for converting mechanical energy into electrical current, includes a first asynchronous machine, and a method of operation for such a drive apparatus are specified, with which or in which the energy buffer, especially its first asynchronous machine is directly electrically connected via a switchover device to the at least one synchronous motor, so that the converter included in the drive apparatus is bypassed for such a switch position of the switchover device and the converter accordingly does not have to be designed for currents which flow in such a switch position of the switchover device.08-13-2009
20110074318DUAL DRIVE ELECTRIC REGENERATOR - The dual drive electric regenerator (DDER), an electric power regenerative device in which a heavy driven-backend flywheel combination being coupled directly to the drive shafts of a specially designed electric generator with dual drives. The driven flywheel with magnetic Pole pieces attached to its circumference area being rotated by the magnetic forces imparted from a driver flywheel with magnetic Pole pieces attached to its circumference surface and rotated by an electric driver motor with its speed being controlled electronically. The DDER expends less input power than the output power generated by the flywheel combination and converted to electrical power by the said generator. The initial power to start the motor being derived from an internal battery. A part of the output power generated being used as the input power through recharging the battery continually and the rotational process being sustained by completing a power regenerative cycle.03-31-2011
20120062154Flywheel System Using Wire-Wound Rotor - A flywheel is described having a rotor constructed of wire wound onto a central form. The wire is prestressed, thus mitigating stresses that occur during operation. In another aspect, the flywheel incorporates a low-loss motor using electrically non-conducting permanent magnets.03-15-2012
20130175953Sequential pulse firing of multiple motors in an flywheel array - A method of initiating sequential pulse firing of a motor to reduce energy consumption in machines that have both rotational and linear kinetic energy stored in them by pulsing the motor at variable frequency without reducing total kinetic energy in the machine below a predetermined level.07-11-2013
20110234125ARRANGEMENT FOR SUPPLYING POWER TO A COUPLED SYSTEM OF MACHINES - An arrangement for supplying power to a system includes a first electric drive unit constructed to supply mechanical power to or receive mechanical power from a first coupled system of machines and a second electric drive unit constructed to supply mechanical power to or receive mechanical power from a second coupled system of machines. The first and second coupled system of machines are constructed to receive mechanical power or mechanical energy or to supply mechanical power or mechanical energy. The arrangement further includes a first kinetic energy storage device having a first electrical energy exchange machine which is electrically connected to the first electric drive unit, and a second kinetic energy storage device having a second electrical energy exchange machine which is electrically connected to the second electric drive unit. The first kinetic energy storage device is coupled to the second kinetic energy storage device.09-29-2011
318162000 CONTROL BY PATTERNS OR OTHER PREDETERMINED SCHEDULE MEANS 5
20100079092REAL TIME LOAD ADAPTATION OF A MOTOR - A method of varying speed and direction of motor operating intervals in a food processing device to achieve real time load adaptation comprising a motor (04-01-2010
20110181212CONTROL METHOD FOR FREQUENCY CONVERTER - A motor drive and a method in connection with a motor drive including a frequency converter are provided. The motor of the drive is connected to a load, and the motor is controlled with the frequency controller. The method includes the steps of converting changes in electrical quantities of the motor caused by actions affecting the load into observations representing the changes, selecting control symbols on the basis of matching of the sequences of observations with a set of valid patterns, and controlling the converter based on the selected symbols.07-28-2011
20090128065FAN WITH SOFT START FUNCTION - A bathroom ventilator fan with the soft-start function includes an impeller and a motor. The motor is coupled to the impeller for driving the impeller to rotate. The motor has a control module for driving and controlling the rotation speed of the motor according to a soft-start signal. The soft-start signal includes a soft-start section and a target-driving section. The control module slowly increases the rotation speed of the motor from the soft-start section to reach the target-driving section.05-21-2009
20100134053CONTROL DEVICE FOR ELECTRIC ROTATING MACHINE AND METHOD OF CONTROLLING THE MACHINE - A control device has a unit for preparing a pattern having first and second periods by comparing a triangular wave and a sine wave having an amplitude ratio set at each value of a modulation factor, and selecting one pattern corresponding to an instructed modulation factor, and a unit for applying a controlled voltage, set at low and high levels in response to first and second periods of the selected pattern, to a generator. The triangular wave has a cycle duration obtained by dividing the cycle duration of the generator by product of 3 and odd number, a crest having a level higher than the sine wave at a timing of each first period, and a trough having a level lower than the sine wave at a timing of each second period.06-03-2010
20100225256Simple Pitch Control System for Objects of Right Circular Cylinder Body Geometry - A technique for controlling the pitch of a supercavitating projectile is disclosed. For example, the illustrative embodiment controls the pitch of a supercavitating projectile by shifting its center of gravity. The center of gravity of the projectile is shifted by moving a ferromagnetic mass inside the projectile forward or backward, depending on the desired pitch. In some embodiments of the present invention, the position of the ferromagnetic mass is directed by a controller that has a predetermined trajectory stored in its memory.09-09-2010
318491000 CONTROL OF BOTH MOTOR CIRCUIT AND MOTOR STRUCTURE 5
20080315818AXIAL GAP TYPE MOTOR/GENERATOR - An axial gap type motor/generator is provided with a stator, a rotor and an alternating current control device. The alternating current control device executes alternating current control of a single phase or multiple phase alternating current flowing in the coils. The alternating current control device includes a superpositioning control section and a frequency component control section. The superpositioning control section produces the alternating current by superpositioning a plurality of frequency components including a first order fundamental wave component and a plurality of higher harmonic wave components that have frequencies equal to integer multiples of a frequency of the fundamental wave components and are of orders that are equal to values of the integer multiples. The frequency component control section controls a relationship among the frequency components such that two pairs of the frequency components whose orders differ by two are aligned with respect to each other.12-25-2008
20090001917REDUCED-COMPLEXITY SELF-BEARING BRUSHLESS DC MOTOR - A method of commutating a motor includes operatively interfacing a stator and actuated component of the motor, arranging at least two winding sets relative to the actuated component, and independently controlling the at least two winding sets so that with the at least two winding sets the actuated component is both driven and centered.01-01-2009
20120081060CONTROL APPARATUS FOR DRIVING APPARATUS - A control apparatus that controls a driving apparatus configured with a stator. A variable magnetic flux type rotating electrical machine has a first and second rotor, circumferential direction relative positions of which can be adjusted. A relative position adjustment mechanism adjusts the relative positions of the two rotors. A control command determination unit that determines, on the basis of a required torque and a rotation speed, an inter-rotor phase command indicating the relative positions for minimizing a system loss including at least an electrical loss, which includes a copper loss and an iron loss of the rotating electrical machine, and a mechanical loss of the relative position adjustment mechanism. A current command drives the rotating electrical machine. A control unit controls the rotating electrical machine on the basis of the current command and controls the relative position adjustment mechanism on the basis of the inter-rotor phase command.04-05-2012
20120081059ELECTRO-MECHANICAL DRIVE WITH EXTENDED CONSTANT POWER SPEED RANGE - Embodiments of the invention comprise a multi-input range box driven by multiple electric drives. Range shifting involves momentarily increasing the current through all but a given motor, to a level that will carry the entire load, comprising specified constant power. Simultaneously, torque of the given motor is reduced to zero. The given motor is then disconnected from supplying power, is synchronized to the input speed of the new speed range, and is then engaged for the new range. The above sequence is then repeated for each remaining motors, in turn. The motor current is re-equalized for all of the motors, after all the motors have been connected to provide power at the new range. Thus, there is no interruption in power flow during a range shift, and the motors are always used to deliver power, rather than to serve as a brake.04-05-2012
20130009584VOLTAGE REGULATED PERMANENT MAGNET MACHINE - A permanent magnet generator comprises a stator core, a plurality of windings situated on the stator core, and a plurality of stress elements. The stress elements apply or relieve mechanical stress in response to control signals from a generator controller, thereby increasing or reducing voltage across the stator windings.01-10-2013
318438000 POWER FACTOR CONTROL OF ARMATURE OR LINE CIRCUIT 5
20080258662POWER CONVERSION SYSTEM AND POWER CONVERSION CONTROL METHOD - A power conversion system includes first and second voltage sources for driving a multiple-phase AC motor and a control unit. The control unit is configured to compute first and second output voltage command values used to drive the multiple-phase AC motor based on a first output voltage command vector corresponding to the voltage source that is charged and a second output voltage command vector corresponding to the voltage source that is discharged. The first and second output voltage command vectors are determined so that a resultant vector of the first and second output voltage command vectors is coincident with a motor voltage command vector corresponding to a motor voltage command value, and a motor current command vector corresponding to the motor current command value is positioned within an included angle formed between the second output voltage command vector and a negative vector of the first output voltage command vector.10-23-2008
20110199033Partial Regeneration In A Multi-Level Power Inverter - In one embodiment, the present invention includes a medium voltage drive system having multiple power cells each to couple between a transformer and a load. A first subset of the power cells are configured to provide power to the load and to perform partial regeneration from the load, and a second subset of the power cells are configured to provide power to the load but not perform partial regeneration. A controller may be included in the system to simultaneously control a DC bus voltage of at least one of the first subset of the power cells, correct a power factor of the system, and provide harmonic current compensation for the system.08-18-2011
20090140680Motor controller of air conditioner - The present invention relates to a motor controller, including a converter for converting commercial AC power into DC power, an inverter including a plurality of switching elements, the inverter receiving the DC power, converting the DC power into AC power of a specific frequency through switching operations, and supplying the AC power to a three-phase motor, and a noise filter unit connected between the commercial AC power and the converter in order to remove a high frequency current and including normal mode inductors and common mode inductor. Accordingly, the motor control can control the power factor, limit a high frequency current, and eliminate noise components, that is, ripple components of an input current.06-04-2009
20130127388Systems and Methods for Downhole Power Factor Correction - Systems and methods for processing power provided to downhole electrical systems such as electric submersible pump motors to increase the power factor of the supplied power. In one embodiment, a system comprises a downhole motor and a power factor corrector. The motor may be coupled to drive an electric submersible pump. The power factor corrector is configured to receive input power, process the received input power using one or more capacitive electrical components and thereby impart a capacitive phase shift between the voltage and the current of the received input power. The processed output power is provided to the downhole motor, which consumes the processed output power with a power factor which is greater than it would have been in the absence of the correction.05-23-2013
20110234136POWER FACTOR CORRECTION DRIVE CIRCUIT TOPOLOGIES AND CONTROL FOR SWITCHED RELUCTANCE MACHINES - Drive circuits that provide power factor correction and input current waveform shaping for controlling the speed and torque in a switched reluctance machine (SRM). The machine's phase windings are split into two segments, one of which is used for active power factor correction, input ac current waveform shaping and partial torque generation and the other of which is used for torque generation.09-29-2011
318437000 PHASING OR ANGULAR OR LINEAR POSITIONAL CONTROL OF MOVABLE ELEMENT OF THE MOTOR 5
20120235618ACTUATOR - There is provided an actuator in which an worm is rotationally driven by an electric motor, and in which an angular velocity of the electric motor is repeatedly fluctuated so that the rotation of the worm is carried out as if the worm is oscillated in the rotational direction thereof, to thereby decrease contact friction of the worm against a worm wheel, resulting in an improvement of an efficiency of force transmission of the worm gear mechanism.09-20-2012
20090001914Electric-Motor-Equipped Vehicle - An electric-motor-equipped vehicle of the present invention includes an electric motor which receives a power supply from a storage apparatus and drives the vehicle, or assists a driving of the vehicle by an internal combustion engine. The electric motor includes: an inner circumference side rotor and an outer circumference side rotor which are each provided with magnet pieces, and rotation axes of which are coaxially arranged; a stator which is arranged on an outer circumferential side or an inner circumferential side of the inner circumference side rotor and the outer circumference side rotor; and a phase modification device capable of modifying a relative phase between the inner circumference side rotor and the outer circumference side rotor.01-01-2009
20090212728WHEEL DRIVING APPARATUS AND ELECTRIC VEHICLE INCLUDING THE SAME - An electric bike includes a wheel driving apparatus. The wheel driving apparatus includes an electric wheel drive motor which drives a wheel, a gap changer which changes a gap length in the wheel drive motor, and a motor control unit which controls the wheel drive motor and the gap changer. The motor control unit calculates a target gap length for the gap changing motor in the gap changer based on an accelerator opening-degree signal, a rotation speed, a q-axis electric-current command value, a power source voltage, and a voltage utilization rate. Then, a feedback control is provided to the gap changer based on a difference value between the target gap length and the actual gap-length. A good vehicle characteristic is obtained without being affected by individual variability or operating environment of the electric motor through efficient drive of the electric motor from a low-speed range through a high-speed range.08-27-2009
20080218109Aperture driving apparatus and projection type image display apparatus - An aperture driving apparatus includes a swing unit and a stationary unit. The swing unit includes an aperture plate that partially blocks a light, a coil that constitute a voice coil motor for obtaining a driving force for driving the aperture driving plate, and a swing arm that supports the aperture plate and the coil and has a bearing portion between the aperture plate and the coil. The stationary unit includes a swing shaft that engages the bearing portion and swingably supports the swing arm about a swing axis, and a magnet and a yoke that constitute the voice coil motor together with the coil. A control unit of the aperture driving apparatus controls the swing angle of the swing arm using a closed-loop control technique. In the direction of the swing axis, the position of a center of gravity of the swing unit is substantially aligned with a position at which the driving force is applied to the coil.09-11-2008
20120306419MOTOR SPEED CONTROLLER AND CONTROL METHOD - A motor speed controller controls a motor speed to generate a phase reference pulse; generates a FG pulse per rotary angle of the motor; detects a difference between the number of phase reference pulses and the number of FG pulses for output as an integer number phase difference; detects and measures a time difference between an edge of the phase-reference pulse and an edge of the FG pulse in units of the reference clock for output as a decimal fraction phase difference; adds the integer number phase difference to the decimal fraction phase difference at a predetermined ratio for output as a phase difference; and controls driving of the motor in accordance with the phase difference.12-06-2012
318443000 PERIODIC, REPETITIOUS OR SUCCESSIVE OPERATIONS CONTROL OF MOTOR, INCLUDING "JOG" AND "INCH" CONTROL 4
20090096400Starter Relay Control - A starter control system includes a power source, a starter motor, a starter relay, a control module, and an ignition switch. The starter motor is in operative communication with the power source. The starter relay is operatively interposed between the power source and the starter motor, and includes a high side node and a low side node. The starter relay is controllable to selectively enable power delivery from the power source to the starter motor responsive to activation of the high side node and the low side node. The control module includes a high side driver in operative communication with the high side node of the starter relay and a low side driver in operative communication with the low side node of the starter relay. The ignition switch is in operative communication with the high side node of the starter relay and in operative communication with the control module.04-16-2009
20130127389METHOD FOR THE ACTIVATION OF A WINDSCREEN WIPER MOTOR - A method for the activation of a windscreen wiper motor is disclosed, in which the motor is connected to a wiper blade by a drive shaft, which moves the wiper blade between two reversal points of a wiping field in differing movement direction, where the rotation speed and direction of the motor, or the speed of the wiper blade, is detected by a sensor device and is supplied to a control device as an input value. The motor, before reaching the respective reversal point, is switched off, whereupon the drive shaft continues to rotate further by a castor angle up to a standstill, and the wiper blade moves further by a trailing distance. The actual speed of the wiper blade is compared at the switch-off time with a nominal speed, and the motor is operated further for a period of time when the comparison results in a difference in values.05-23-2013
20080303466FAN SYSTEM CONTAINING FAN CONTROL APPARATUS AND FAN CONTROL METHOD - A fan system includes a fan attached to a housing; and a DC motor configured to drive the fan. A fan control apparatus includes a control unit configured to control a rotation speed of the fan so as to periodically change around a specific rotation speed based on data corresponding to a specific rotation speed.12-11-2008
20130175961ELECTRIC POWER TOOL - An electric power tool is configured to control power supply to a motor based on an operational amount of the variable speed switch, and further configured to perform in an intermittent control mode in which power supply to the motor is varied intermittently in the same manner as if an ON operation and an OFF operation of the variable speed switch were repeated. It is also able to perform in a continuous control mode in which power supply to the motor is varied based on the operational amount of the variable speed switch.07-11-2013
20090096400Starter Relay Control - A starter control system includes a power source, a starter motor, a starter relay, a control module, and an ignition switch. The starter motor is in operative communication with the power source. The starter relay is operatively interposed between the power source and the starter motor, and includes a high side node and a low side node. The starter relay is controllable to selectively enable power delivery from the power source to the starter motor responsive to activation of the high side node and the low side node. The control module includes a high side driver in operative communication with the high side node of the starter relay and a low side driver in operative communication with the low side node of the starter relay. The ignition switch is in operative communication with the high side node of the starter relay and in operative communication with the control module.04-16-2009
20130127389METHOD FOR THE ACTIVATION OF A WINDSCREEN WIPER MOTOR - A method for the activation of a windscreen wiper motor is disclosed, in which the motor is connected to a wiper blade by a drive shaft, which moves the wiper blade between two reversal points of a wiping field in differing movement direction, where the rotation speed and direction of the motor, or the speed of the wiper blade, is detected by a sensor device and is supplied to a control device as an input value. The motor, before reaching the respective reversal point, is switched off, whereupon the drive shaft continues to rotate further by a castor angle up to a standstill, and the wiper blade moves further by a trailing distance. The actual speed of the wiper blade is compared at the switch-off time with a nominal speed, and the motor is operated further for a period of time when the comparison results in a difference in values.05-23-2013
20080303466FAN SYSTEM CONTAINING FAN CONTROL APPARATUS AND FAN CONTROL METHOD - A fan system includes a fan attached to a housing; and a DC motor configured to drive the fan. A fan control apparatus includes a control unit configured to control a rotation speed of the fan so as to periodically change around a specific rotation speed based on data corresponding to a specific rotation speed.12-11-2008
20130175961ELECTRIC POWER TOOL - An electric power tool is configured to control power supply to a motor based on an operational amount of the variable speed switch, and further configured to perform in an intermittent control mode in which power supply to the motor is varied intermittently in the same manner as if an ON operation and an OFF operation of the variable speed switch were repeated. It is also able to perform in a continuous control mode in which power supply to the motor is varied based on the operational amount of the variable speed switch.07-11-2013
318001000 ELECTRIC MOTOR WITH NONMOTOR DRIVING MEANS (E.G., AXLE DRIVE, MANUAL DRIVE) 3
20110121764SERVOMOTOR WITH REMOVABLE SUBUNITS - A servomotor includes a motor unit generating movement of a mechanical component, a position-detecting unit detecting the position of the mechanical component, and a control unit manually controlling the mechanical component. The manual control unit is inside a main enclosure, the manual control unit is actuated by an actuator located outside the main enclosure, and the main enclosure is connected to the motor unit and to the position-detecting unit, The position-detecting unit and the motor unit are located inside first and second enclosures that are distinct from the main enclosure and are removably connected to the main enclosure. The manual control unit can be actuated when the first and second enclosures are separated from the main enclosure.05-26-2011
20080258654COMBINATION PNEUMATIC AND ELECTRIC LINEAR ACTUATOR - A linear actuator system can move a probe along a substantially linear path. The linear actuator system can have a housing with a magnet mounted in the housing creating a magnetic field. An electric coil piston can be slidably mounted in the housing. The coil piston can have a coil for carrying a current and can be disposed for translational movement within the magnetic field in response to current flow through the coil. The probe can be attached to the coil for translational movement with the coil. In addition, a pneumatic cylinder can be connected to the piston configured to apply a force to the piston in response to an activation of the pneumatic cylinder. Accordingly, the linear actuator system can combine the beneficial compact force capability of pneumatic cylinders with the programmable control features of linear electric motors, which can result in highly repeatable, high-force linear actuator systems. Such a system can last a long time, have “soft lands” and also work relatively quietly10-23-2008
20120153874ASSEMBLY AND METHOD FOR SUPPLYING ENERGY TO MOTORISED VEHICLES - To supply energy to motorised vehicles, a heat engine (SM) is provided to convert heat (06-21-2012
318493000 CONTROL OF BOTH ARMATURE (OR PRIMARY) CIRCUIT AND FIELD (OR SECONDARY) CIRCUIT 3
20130033215APPARATUS AND METHOD FOR PERMANENT MAGNET ELECTRIC MACHINE CONDITION MONITORING - An apparatus and method for determining a condition of an electric machine. Search coils are wound around stator teeth and the induced voltage is used to decouple stator and rotor fluxes. The decoupled fluxes allow for machine condition monitoring and fault diagnosis.02-07-2013
20090091282ELECTRIC MOTOR CONTROL - A method and apparatus is disclosed for controlling a system comprising at least one electric motor. The system includes aspects which permit, among other things, electromagnetically disconnecting a failed permanent magnet motor from said system, weight savings in motor control electronics, controllability benefits and other benefits.04-09-2009
20120306423MOTOR CONTROL SYSTEM IMPLEMENTING FIELD WEAKENING - A control system for use with a motor is disclosed. The control system may have a controller that is configured to receive a torque command for the motor and receive a rotor angular velocity signal indicative of an angular velocity of a rotor of the motor. The controller may also be configured to generate a field weakening command by adding a field weakening adjustment signal to the rotor angular velocity signal, and generate a torque voltage command and a flux voltage command based on the torque command and the field weakening command. Further, the controller may be configured to convert the torque voltage command and the flux voltage command into phase voltage commands and output the phase voltage commands.12-06-2012
318115000 MOTOR WITH DIVERSE MOTIONS (E.G., ROTARY AND RECIPROCATING) 3
20090001907COMMUTATION OF AN ELECTROMAGNETIC PROPULSION AND GUIDANCE SYSTEM - A method of commutating a motor includes calculating an adjustment electrical angle, and utilizing the adjustment electrical angle in a common set of commutation equations so that the common set of commutation equations is capable of producing both one and two dimensional forces in the motor.01-01-2009
20120013275MOTOR FOR LINEAR AND ROTARY MOVEMENT - In summary, the present invention relates to a device, a method and a computer program enabling a rotating and translating movement by means of a single motor. An electric motor (01-19-2012
20080297074LINEAR-ROTARY ACTUATORS, ACTUATOR SYSTEMS, AND METHODS OF OPERATION THEREFOR - In an embodiment, an actuator includes a plurality of stator windings adapted to produce a first stator magnetic field that translates along a stator axis, and to produce a second stator magnetic field that rotates around the stator axis. In addition, the actuator includes a rotor, coupled to a shaft, and positioned within a central stator channel. The rotor is adapted to produce a first rotor magnetic field that translates along a shaft axis and to produce a second rotor magnetic field that rotates around the shaft axis. An actuator system includes an actuator and an actuator controller unit, which is adapted to produce actuator inputs. An embodiment of a method for controlling the actuator includes providing actuator inputs to produce a translating magnetic field in the stator, a translating magnetic field in the rotor, a rotating magnetic field in the stator, and a rotating magnetic field in the rotor.12-04-2008
318246000 SERIES MOTORS 3
20110241577Electrical Power Tool for Operating with Alternating Current - The invention relates to an electrical power tool, particularly an electric hand power tool, for operating with alternating current, having an electric motor, and electronic control device, and an electrical power switch for actuating the electric motor, wherein the electronic control device comprises a bias voltage output and a detection input, connected to each other by means of a voltage divider comprising a summation point and to the side of the power switch facing the electric motor, and the control device is further designed such that the potential at the detection input is monitored after actuating the power switch and used for checking whether the power switch is conducting, and that it is actuated again if the power switch was not conducting or returned to the non-conducting state during the monitoring, and that said checking and any renewed actuation of the power switch is repeated within a half-wave of the alternating voltage.10-06-2011
20110068720DIRECT CURRENT MOTOR - A DC motor including a stator which includes a shell, a main magnetic pole and an exciting coil; a rotator disposed inside the stator; a brush holder disposed at an end of the shell; first and second carbon brushes disposed on the brush holder and contacted with the rotator respectively; a current direction controller disposed on the brush holder and connected with the first and second carbon brushes and first and second ends of the exciting coil respectively so as to control a direction of a current supplied to the exciting coil; and a cover disposed at the end of the shell so as to enclose the brush holder. The motor according to the present invention is compact in structure, small in volume, and occupies a small mounting space, and the work load of sealing and insulating is reduced, thus reducing the cost and improving the manufacture efficiency.03-24-2011
20120256570DRIVE DEVICE FOR SINGLE-PHASE SERIES COMMUTATOR MOTOR - A drive device of the present invention includes a pair of drive switches, a first diode, a switching element, a current detection unit, a capacitor, a second diode, and a current control unit. The first diode, the switching element, and the current detection unit are arranged, in this order from one end of an armature in a motor, on a braking current path that is formed of the armature and a field winding in the motor when the pair of drive switches is in a brake position. The second diode is adapted to keep allowing a braking current to flow through the field winding when the switching element is in an off-state by directly connecting a partial path between the switching element and the current detection unit on the braking current path and the other end of the armature.10-11-2012
318543000 THREE-OR-MORE-POSITIONS MOTOR CONTROLLER SYSTEMS 2
20130033217ELECTRIC POWER TOOL - In an impact driver, a link unit (a link sleeve and first and second elongated protrusions) is provided between the mode switching ring for selecting an operation mode and the slide button for selecting the rotation speed. With the link unit, a switching operation of a slide button to the high-speed side is performed in coordination with a selecting operation of a mode switching ring to an impact mode or a vibration drill mode and the rotation speed is held at high speed.02-07-2013
20130207587Control System For Electrically Powered Vehicles - A circuit, for controlling a vehicle having an electric motor, the circuit comprising throttle means operable to generate an output signal; adjuster means operable to modify the output signal to above a predetermined minimum level, and controller means operable to receive the modified output signal and derive an input signal for provision to the electric motor.08-15-2013
318436000 NONRUNNING, ENERGIZED MOTOR 1
20120001577TORQUE MOTOR DRIVING DEVICE FOR WIRE CUT ELECTRICAL DISCHARGE MACHINES - In a torque motor driving device for wire cut electrical discharge machines, a voltage waveform rectified by a full-wave rectifying circuit, not using a high-capacitance electrolytic capacitor, is applied as an AC voltage to a single-phase torque motor by a bridge circuit including semiconductor switches. A PWM signal whose duty is adjusted so that the current flowing through the torque motor matches an instructed value is generated and the generated PWM signal is used for the operation of the bridge circuit.01-05-2012
318492000 MOTOR MAGNETIC ENERGY DISSIPATION 1
20100134062DC converter using motor coil - Circuits and methods system for a DC-to-DC conversion using the inductance of a motor coil are disclosed. The invention is especially applicable for mobile electronic devices having a motor and requiring a DC-to-DC conversion. By using the coil of the motor for DC-to-DC conversion and for the purpose of a motor no space for an additional coil is required. For motor control an H-bridge arrangement is provided allowing motor movement in both directions, to brake and free run. By adding two diodes and a capacitor and modulation of a switch of the H-bridge a DC-to-DC conversion has been made possible.06-03-2010
318383000 "ANTI-BRAKING" OR BRAKING-PREVENTION MEANS 1
20090066274MOTOR CONTROLLER WITH HALL SENSOR MISALIGNMENT COMPENSATION - A technique can recover from motor stalls caused by misalignment of motor position sensors such as Hall-effect sensors. In a normal operating mode, a motor controller provides motor drive current to the motor windings based on the sensor signals according to a normal commutation sequence, and monitors for occurrence of a motor stall condition. Upon detecting the motor stall condition, the motor controller first momentarily drives the windings according to one of an advanced commutation state and a delayed commutation state each adjacent to the given commutation state in the normal commutation sequence, and determines whether the motor stall condition persists. If the stall condition persists, then the motor controller next momentarily drives the windings according to the other of the advanced commutation state and the delayed commutation state. By this action, the controller attempts operation at both preceding and succeeding portions of the torque characteristic, such that operation with increased torque is ensured even though the direction of the sensor misalignment is unknown.03-12-2009
20090066274MOTOR CONTROLLER WITH HALL SENSOR MISALIGNMENT COMPENSATION - A technique can recover from motor stalls caused by misalignment of motor position sensors such as Hall-effect sensors. In a normal operating mode, a motor controller provides motor drive current to the motor windings based on the sensor signals according to a normal commutation sequence, and monitors for occurrence of a motor stall condition. Upon detecting the motor stall condition, the motor controller first momentarily drives the windings according to one of an advanced commutation state and a delayed commutation state each adjacent to the given commutation state in the normal commutation sequence, and determines whether the motor stall condition persists. If the stall condition persists, then the motor controller next momentarily drives the windings according to the other of the advanced commutation state and the delayed commutation state. By this action, the controller attempts operation at both preceding and succeeding portions of the torque characteristic, such that operation with increased torque is ensured even though the direction of the sensor misalignment is unknown.03-12-2009
318383000 "ANTI-BRAKING" OR BRAKING-PREVENTION MEANS 1
20090066274MOTOR CONTROLLER WITH HALL SENSOR MISALIGNMENT COMPENSATION - A technique can recover from motor stalls caused by misalignment of motor position sensors such as Hall-effect sensors. In a normal operating mode, a motor controller provides motor drive current to the motor windings based on the sensor signals according to a normal commutation sequence, and monitors for occurrence of a motor stall condition. Upon detecting the motor stall condition, the motor controller first momentarily drives the windings according to one of an advanced commutation state and a delayed commutation state each adjacent to the given commutation state in the normal commutation sequence, and determines whether the motor stall condition persists. If the stall condition persists, then the motor controller next momentarily drives the windings according to the other of the advanced commutation state and the delayed commutation state. By this action, the controller attempts operation at both preceding and succeeding portions of the torque characteristic, such that operation with increased torque is ensured even though the direction of the sensor misalignment is unknown.03-12-2009
20090066274MOTOR CONTROLLER WITH HALL SENSOR MISALIGNMENT COMPENSATION - A technique can recover from motor stalls caused by misalignment of motor position sensors such as Hall-effect sensors. In a normal operating mode, a motor controller provides motor drive current to the motor windings based on the sensor signals according to a normal commutation sequence, and monitors for occurrence of a motor stall condition. Upon detecting the motor stall condition, the motor controller first momentarily drives the windings according to one of an advanced commutation state and a delayed commutation state each adjacent to the given commutation state in the normal commutation sequence, and determines whether the motor stall condition persists. If the stall condition persists, then the motor controller next momentarily drives the windings according to the other of the advanced commutation state and the delayed commutation state. By this action, the controller attempts operation at both preceding and succeeding portions of the torque characteristic, such that operation with increased torque is ensured even though the direction of the sensor misalignment is unknown.03-12-2009

Patent applications in all subclasses Electricity: motive power systems