Patent application number | Description | Published |
20080281442 | Control Device For Displacing At Least One Machine Axis Of A Machine Tool Or Production Machine - A control device for displacing at least one machine axis of a machine tool or production machine includes a control element that can deviate from a position of rest. Set values for controlling or regulating the machine can be generated according to the extent and duration of the deviation. During a progessive deviation of the control element and when the deviation of the control element is in a stationary state, a pulse-shaped mechanical feedback can be conveyed via the control element to the operator for at least one generated change in the set value. This results in the creation of a control device that provides the operator with a mechanical feedback over the path of displacement. | 11-13-2008 |
20090152442 | Device for transferring light signals and corresponding method - To ensure an energy-efficient transfer of light signals between two elements of a machine which are movable relative to one another, a device and a method for transferring light signals between such elements is provided. A first element has a plurality of light sources for delivering light signals and a second element has at least one photoreceiver for receiving the light signals. A unit causing the turning on or off is configured such as to effect a turning on or off of only one portion of the light sources. | 06-18-2009 |
20090154875 | Machine with data transfer from one machine part to another machine part which is able to be rotated relative to the one machine part - A machine having two machine parts, of which one is able to be rotated relative to the other, in which light signals are transferred from the one part to the other part. The light signals are transmitted radially to the axis of rotation of the rotatable machine part. In a first embodiment a plurality of light sources couple light into an optical waveguide ring which is coupled out over the entire outer circle of the optical waveguide ring so that it is guaranteed that light signals reach a receiver arranged radially outside in each case. In another embodiment light sources couple light into optical waveguide structures, with branches of the optical waveguides guaranteeing that on the outer circle of the one component the exit points for light are sufficiently dense that for any given angular position of the rotatable component at least one of two receivers receives a light signal. | 06-18-2009 |
20090166157 | Roller Drive and Roller Transportation Device - There is described a roller drive and a roller transport device equipped with the roller drive. The roller drive comprises an electric machine and ends, wherein at least one end has a heat-conducting end contact face. The contact face is intended for coming into heat-conducting contact with a side cheek of the roller transport device. This allows the cooling to be improved. Furthermore, the roller drive can also be designed in such a way that it has a device for accommodating electrical components, wherein the device is intended as a torque support for the electric machine. A regulating device and/or a communication device can also be integrated into the device. | 07-02-2009 |
20090240347 | OPERATING METHOD FOR A CONTROL DEVICE OF A SAFETY-ORIENTED AUTOMATION DEVICE FOR CHECKING THE RELIABILITY OF AN AUTOMATION SYSTEM - Information describing an automation system is input into a control device of an automation device. The information the information includes a description of elements of the automation device, a description of interaction between the elements, and safety-related reliability information associated with the elements. The control device independently determines from the provided information reliability information for the automation device as a whole. | 09-24-2009 |
20090273437 | KEY-OPERATED SWITCH - A key-operated switch includes a first excitation device which generates a first alternating magnetic field and has a first inductance. The key-operated switch is constructed in such a manner that the first alternating magnetic field can be used to scan a first coding of a key, with the first coding changing the first inductance of the first excitation device. The first coding is read by the key-operated switch in this manner. The key associated with the key-operated switch has a carrier element which is not electrically conductive and is not magnetizable. Arranged on the carrier element is the first coding which is made of an electrically conductive and/or magnetizable material. As a result, the key can be scanned without wear. | 11-05-2009 |
20090277289 | Monitoring Device and Monitoring Method for a Drive Device - There is described a method for monitoring a drive device for a defective sensor signal from a first sensor of the drive device and to a monitoring device which is suitable for this purpose. Although sensors operate reliably, sensor errors which may give rise to significant damage if they are not detected may arise. Monitoring the sensor makes it possible to increase the reliability of the drive device. The sensor signal from the first sensor is compared with a sensor signal from a second sensor in such a manner that the first sensor is monitored. In this case, the monitoring device is intended, in particular, for a sensor having a sensor disc. | 11-12-2009 |
20100039096 | Transmissivity monitoring of an energy transmission element - A method for monitoring transmissivity of an energy transmission element for a protective earth conductor and an electrical machine with such transmissivity monitoring are provided. For a cost-effective solution for transmissivity monitoring, the protective earth conductor of a first circuit is connected on a first side of the energy transmission element via a connecting line to a ground of a second circuit wherein a potential-free voltage supply is connected between the protective earth conductor and ground on a second side of the energy transmission element. A current flows through the energy transmission element and the connecting line that is produced by the potential-free voltage supply. The transmissivity of the energy transmission element is monitored using the current flow by a monitoring element which is arranged between the protective earth conductor and ground on the second side of the energy transmission element. | 02-18-2010 |
20100072031 | Roller Drive for a Conveyor System and Conveyor System - A roll drive for driving a drive roller of a conveyor system has a stator which is arranged on a shaft and has a plurality of windings for generating a magnetic field, and a rotor which is arranged around the stator and is connected to a roller tub of the drive roller. A thermally conducting element is provided on the end side of the stator for dissipation of the heat which is produced during operation of the roll drive. | 03-25-2010 |
20130069567 | CIRCUIT ARRANGEMENT - A circuit arrangement, especially for supplying an electromagnetic holding brake with a clocked supply voltage, includes a module for controlled provision of a clocked supply voltage for free-wheeling operation of the holding brake. The module has a switching unit for switching off the supply voltage for braking operation. A free-wheeling diode and a suppressor diode are connected in parallel to an inductance of the holding brake, with the free-wheeling diode being effective in free-wheeling operation only and the suppressor diode being effective in braking operation only. | 03-21-2013 |
20130181645 | DRIVE SYSTEM AND METHOD FOR OPERATING SUCH A DRIVE SYSTEM - A drive system for an electric motor includes a connection for a battery, and an inverter having an input side connected to an intermediate circuit and an output side having a connection for an electric motor. The intermediate circuit includes a first thyristor connected in parallel with an intermediate circuit capacitance. The drive system may also include a rectifier having an input side connected at the output side of the inverter in parallel with the electric motor, and a second thyristor connected an output side of the rectifier. The first/second thyristor are configured to be activated by a monitor incorporated in or assigned to the drive system. In the event of a malfunction, the input and/or output side of the inverter can be electrically isolated to allow a multiply redundant armature short circuit. | 07-18-2013 |
20130257921 | DISPLAY DEVICE WITH READBACK DISPLAY - A display device includes a plurality of cells arranged in a two-dimensional matrix and including luminous elements and feedback elements arranged in the cells. A control device emits control signals to control the luminous elements individually in accordance with a setpoint control pattern. An evaluation device receives from the feedback elements feedback signals depending on actual control states of the luminous elements and determines a feedback pattern based on the feedback signals. The evaluation device then compares the feedback pattern with the setpoint control pattern and producing a normal reaction when the feedback pattern matches the setpoint control pattern, and producing a fault reaction that is different from the normal reaction when the feedback pattern fails to match the setpoint control pattern. | 10-03-2013 |
20140026681 | METHOD AND APPARATUS FOR DETERMINING AN ELECTRICAL TORQUE OF AN ELECTRICAL MACHINE - A method for determining an electrical torque of an electrical machine includes determining an electrical torque in a first speed range with a first algorithm, and determining the electrical torque in a second speed range with a second algorithm which differs from the first algorithm. An upper limit of the second speed range is slightly higher than a lower limit of the first speed range. An apparatus is provided to determine the electrical torque of the electrical machine with the aforedescribed method. | 01-30-2014 |