Patent application number | Description | Published |
20090278485 | Device and Method for Determining the Rotational Position of a Rotor in an Electric Machine - The invention relates to a device and a method for determining the rotational position of the rotor of an electric machine that has star-connected pole winding phases. The device is equipped with a unit for applying voltage pulses ( | 11-12-2009 |
20110273168 | POSITION DETERMINATION OF AN ELECTRIC DRIVE HAVING TWO STATORS AND TWO ROTORS - Disclosed is an electric drive, particularly for a pivoting arm, such as a robotic arm, comprising a rotor, a plurality of magnetic periods and a device for determining the rotational position of the rotor based on at least one measurement signal, which is indicative of the inductance of a pole winding strand that is dependent on the position of the pole winding strand relative to the magnetic periods. The electric drive according to the invention that solves this problem in that two coupled rotor parts, which can be jointly rotated at a rotational angle ratio in relation to each other that is fixed, and assemblies comprising magnetic periods and pole winding strands are provided, the assemblies being separate for the rotor parts, wherein the numbers of the magnetic periods for each rotor part are co-prime, and the device for determining the rotational position of the rotor is provided for determining the position from the measurement signals for the two rotor parts. | 11-10-2011 |
20130088216 | POSITION SENSOR AND/OR FORCE SENSOR - A device for determining a position of a movable, magnetizable and/or conductive body relative to a stator that has at least one pole winding. Apparatuses are provided for detecting a measurement signal that depends on the inductance of the pole winding, wherein the inductance is influenced by the position of the body. | 04-11-2013 |
20130162114 | DRIVE - A drive with a motor and devices for coupling the motor to a driving object. The coupling devices include a centrifugal mass which is movable by the motor, and an impact stop, which is connected to the driving object, for the centrifugal mass. | 06-27-2013 |
20130245994 | APPARATUS FOR DETERMINING THE ANGULAR POSITION OF THE ROTOR OF AN ELECTRIC MACHINE - An apparatus for determining the position of the rotor of an electric machine in relation to the stator. The machine has multiple phases, each of which includes at least one pole winding with a magnetizable core. The apparatus includes devices for detecting measurement signals that are characterized by the momentary degrees of magnetization of the pole winding cores. The degrees of magnetization are influenced by the angular position of the magnetic field of the rotor. The devices are also used to detect the currents in the phases and determine the angular position of the rotor from the detected measurement signals, taking into account a contribution of the phase currents to the degrees of magnetization of the pole winding cores. | 09-19-2013 |
20130253881 | PROCESS FOR DETERMINING THE POSITION OF THE ROTOR OF AN ELECTRIC MACHINE - A process for determining the position, in particular the angular position, of the rotor of an electric machine in relation to the stator. A first measured value of the position is determined according to a first method. Another measured value is simultaneously determined according to at least one other measurement method, and a mean value for the position of the rotor is determined from the measured values. Preferably, the mean value is determined taking into account weighting factors that take into consideration different spreads of the measured values. | 09-26-2013 |
20130285583 | DRIVE WITH CONNECTABLE LOAD ELEMENT - A drive with an electric machine which can be operated as a motor for generating a positive drive force and as a generator for generating a negative drive force (braking force), a rechargeable battery, which supplies power to the electric machine in the motor operating mode and can be recharged by the electric machine in generator operating mode, and devices including a load resistor for limiting the charging of the rechargeable battery. The limiting devices also have devices for generating a flow which dissipates heat upstream of the load resistor. | 10-31-2013 |
20130328551 | APPARATUS FOR DETERMINING THE POSITION OF THE ROTOR OF AN ELECTRICAL MACHINE - An apparatus for determining the position of the rotor of an electric machine in relation to the stator, wherein the electric machine has at least three winding phases, which each have at least one pole winding with a magnetizable core, with devices for detecting a measurement signal. The instantaneous degrees of magnetization of the pole winding cores influenced by the magnetic field of the rotor, depend on the position of the rotor. The devices for detecting the measurement signal for tapping off the measurement signal are provided exclusively outside the electric machine at connecting conductors used for energizing the electric machine. Preferably, switching devices for temporarily isolating at least one of the connecting conductors from an operating voltage source are provided, wherein the measurement signal can be tapped off at the connecting conductor which has been isolated from the operating voltage source. | 12-12-2013 |
20140145659 | METHOD FOR DETERMINING THE ROTARY POSITION OF THE ROTOR OF AN ELECTRIC MACHINE - A method for determining the rotary position of the rotor of an electric machine, which includes star-connected phase conductors, wherein a measurement signal representing the rotary position of the rotor within a magnetic half-period is determined from the potential at the star point. At a measurement time a specified voltage is applied to the ends of all the phase conductors by forcing the star point to a specific potential. At a time following the measurement time a voltage that deviates from the specified voltage is applied to the ends of one of the phase conductors. Then the measurement signal is derived from the current that develops from the measurement time in a connection of the star point to the specified potential. | 05-29-2014 |
20150032255 | ARRANGEMENT OF AN ACTUATOR AND AN ACTUATOR HOLDER - An arrangement of an actuator and an actuator holder. The actuator is movably connected to the actuator holder, and devices are provided for supplying the actuator with operating energy. The devices for supplying the actuator with operating energy include an energy store integrated into the actuator. The actuator is preferably movable relative to the actuator holder in at least one dimension in an unrestricted manner. | 01-29-2015 |
20150061641 | METHOD FOR DETERMINING THE POSITION OF THE ROTOR OF AN ELECTRICAL MACHINE - A method for determining the position of the rotor of an electric machine having multiple phases in relation to the stator. The change Δi in the time derivative I of the current I flowing through at least one of the power inputs is determined. The change Δi is caused by a change ΔU in the potential U on at least one of the power inputs of the electric machine. A measurement signal that is representative of a position of the rotor is determined from multiple simultaneously or successively determined changes Δi. | 03-05-2015 |
20150136508 | VEHICLE, PARTICULARLY A BICYCLE, COMPRISING AN ELECTRICAL AUXILIARY DRIVE - A vehicle, particularly a bicycle, including a crank drive that is to be actuated by muscular force and that is disconnectably drive-connected to at least one driven wheel, and also including an electrical auxiliary drive for assisting the crank drive. The vehicle can be driven solely by the auxiliary drive when the drive connection between the crank drive and the wheel is disconnected. In addition, a control device for the auxiliary drive is preferably connected to a sensor which detects the crank rotational speed. | 05-21-2015 |
20150336598 | DEVICE, IN PARTICULAR VEHICLE, INTENDED TO BE MOVED BY MUSCLE FORCE - A device, in particular a vehicle, intended to be moved by muscle force, including an electric machine, which influences the movement of the device in addition to the muscle force and which produces an additional force, at least one sensor for measuring the muscle force acting on the device, and apparatuses for controlling the production of the additional force by the electric machine on the basis of the measurement signal of the sensor. The apparatuses for controlling the production of the driving and/or braking force include a load device for converting electrical energy produced by the electric machine operating as a generator into another form of energy, in particular heat. | 11-26-2015 |
Patent application number | Description | Published |
20080289544 | DEVICE AND METHOD FOR DETECTION OF COLLISIONS IN FURNITURE - This invention relates to a device and a method for recognizing collision of automatically moveable parts of furniture with obstacles by detecting a change in bend or a change in acceleration. | 11-27-2008 |
20090050154 | METHOD AND APPARATUS FOR ADJUSTING DESIRED PRESSURE IN POSITIVE AIRWAY PRESSURE DEVICES - Systems and methods for adjusting a desired pressure in a positive airway pressure (PAP) device are provided. In one embodiment, the method includes: a) providing breathing gas under positive pressure to a patient via a PAP device based on current desired pressure, b) monitoring a characteristic of the breathing gas, patient, or PAP device indicative of respiration, c) creating a breathing cycle signal having a first level associated with inhalation and a second level associated with exhalation, the signal being based on the monitored respiration characteristic, d) performing an abnormal breathing check based on the monitored respiration characteristic and the breathing cycle signal, and e) if abnormal breathing is detected, increasing the current desired pressure until a maximum desired pressure is reached, otherwise, decreasing the current desired pressure until a minimum desired pressure is reached. Several embodiments of an apparatus associated with the method are also provided. | 02-26-2009 |
20100138128 | MOTORIZED WHEELCHAIR - A motorized wheelchair includes left and right drive wheels, left and right motors, rate-of-turn sensor, first and second speed sensors, and controller arranged to combine signals from the sensors in a manner that detects drift. Alternatively, the motorized wheelchair includes left and right drive wheels, left and right motors, first and second rate-of-turn sensors, and controller arranged to combine signals from the sensors in a manner that compensates for voltage offset errors. In another arrangement, the motorized wheelchair includes left and right drive wheels, left and right motors, first and second rate-of-turn sensors, input device, and controller arranged to combine signals from the sensors and input device in a manner that controls the motors using an integrated turn rate error. Several methods for controlling each wheelchair configuration are also provided. These methods process signals associated with desired, expected, or actual turn rate to determine if the wheelchair is off course. | 06-03-2010 |
20120018234 | ELECTRIC MOTOR AND BRAKE ASSEMBLY - A motor and brake assembly includes a mounting member. A stator winding assembly, a brake assembly, a hub, and a rotor magnet assembly. The stator winding assembly is mounted to the mounting member. The brake assembly is operably connected to the mounting member. The hub is rotatably coupled to the mounting member. The rotor magnet assembly is mounted to an inside of a radially outer wall of the hub. The brake assembly is operable to move a component of the brake assembly between an engaged position where the component engages the inside of the radially outer hub wall and a disengaged position where the component is spaced apart from the inside of the radially outer hub wall. | 01-26-2012 |
20130080015 | MOTORIZED WHEELCHAIR - A motorized wheelchair includes left and right drive wheels, left and right motors, rate-of-turn sensor, first and second speed sensors, and controller arranged to combine signals from the sensors in a manner that detects drift. Alternatively, the motorized wheelchair includes left and right drive wheels, left and right motors, first and second rate-of-turn sensors, and controller arranged to combine signals from the sensors in a manner that compensates for voltage offset errors. In another arrangement, the motorized wheelchair includes left and right drive wheels, left and right motors, first and second rate-of-turn sensors, input device, and controller arranged to combine signals from the sensors and input device in a manner that controls the motors using an integrated turn rate error. Several methods for controlling each wheelchair configuration are also provided. These methods process signals associated with desired, expected, or actual turn rate to determine if the wheelchair is off course. | 03-28-2013 |
Patent application number | Description | Published |
20090057909 | UNDER BUMP METALLIZATION STRUCTURE HAVING A SEED LAYER FOR ELECTROLESS NICKEL DEPOSITION - Structures and methods for fabrication of an under bump metallization (UBM) structure having a metal seed layer and electroless nickel deposition layer are disclosed involving a UBM structure comprising a semiconductor substrate, at least one final metal layer, a passivation layer, a metal seed layer, and a metallization layer. The at least one final metal layer is formed over at least a portion of the semiconductor substrate. Also, the passivation layer is formed over at least a portion of the semiconductor substrate. In addition, the passivation layer includes a plurality of openings. Additionally, the passivation layer is formed of a non-conductive material. The at least one final metal layer is exposed through the plurality of openings. The metal seed layer is formed over the passivation layer and covers the plurality of openings. The metallization layer is formed over the metal seed layer. The metallization layer is formed from electroless deposition. | 03-05-2009 |
20100288609 | Self Illuminated Electrical Wall Switch - An electrical switch includes a housing and at least two electrical terminals. A pivoting toggle is provided within the housing for controlling the electrical connection between the two terminals. A light source is mounted to the housing in a fixed position and a length of optically conductive material extends from within the toggle to adjacent the light source, such that, when the light source is on, light is visible through the toggle via the optically conductive material. | 11-18-2010 |
20120104871 | ENERGY EFFICIENT COMPACT ELECTRONIC TIMER FOR AN ELECTRICAL LOAD - A compact wall-mountable load control device for controlling the power delivered to an electrical load from an AC power source includes: a controllably conductive device coupled in a series electrical connection between the AC power source and the load, the controllably conductive device including a control input; a control circuit operatively coupled to the control input of the controllably conductive device, the control circuit operable to control the conductivity of the controllably conductive device, the control circuit including a timer; a timer adjustment selector operatively coupled to the control circuit; a visual indicator operatively coupled to the control circuit; and a switch operatively connected to the control circuit to provide a user the ability to operate the control circuit using the integral switch. The control circuit includes a timed ON setting, an OFF setting, and an ON setting that bypasses the timer. The timed ON setting may be user adjustable. | 05-03-2012 |
20130140160 | ILLUMINATED WALL SWITCH - An electrical switch includes a housing and at least two electrical terminals. A pivoting toggle is provided within the housing for controlling the electrical connection between the two terminals. A light source is mounted to the housing in a fixed position and a length of optically conductive material extends from within the toggle to adjacent the light source, such that, when the light source is on, light is visible through the toggle via the optically conductive material. | 06-06-2013 |