Abstract: A capacitance detection apparatus and an electronic device are disclosed. The capacitance detection apparatus includes: a sensing module, a connecting circuit, and a differential detection circuit for detecting changes in capacitance of the sensing module; the sensing module comprises: a substrate, and a first sensing layer and a second sensing layer respectively located on two sides of the substrate; a first sensing unit of the first sensing layer is opposite to a second sensing unit of the second sensing layer, and the first sensing unit covers the second sensing unit; the first sensing unit and the second sensing unit are electrically connected to the differential detection circuit. When a detection object approaches the capacitance detection apparatus, the capacitance of the first sensing unit is influenced by the temperature and the detection object, and the capacitance of the second sensing unit is only influenced by the temperature.

Abstract: The system comprises a plurality of driver modules coupled by a fault condition bus, e.g. single-wire bus. Each driver module includes an Error Flag Interface block coupled between a single terminal error flag input/output (EF I/O) and a Control block. Each driver module may be coupled- to a motor. When a driver module detects a local fault condition, its Error Flag Interface block is configured to lower the voltage at the single terminal EF I/O to communicate the change to the other driver modules. The Error Flag Interface block is further configured to monitor voltage changes at its single terminal EF I/O. An external fault condition is detected when the single terminal EF I/O is at a low voltage. The Error Flag Interface block is further configured to send a signal disabling the output of the driver module.

Abstract: The present specification relates to a motor control device, a motor control system, and a motor control method. The motor control device measures a ripple voltage of a DC link capacitor to determine an appropriate switching frequency according to the ripple voltage, and causes a plurality of arithmetic processing units to selectively control a switching operation of the switching unit according to the determined switching frequency.

Abstract: When an inverter and a converter are merely operated with their carrier waves synchronized with each other, current ripple of a smoothing capacitor connected therebetween might be increased. Accordingly, bipolar modulation PWM control is performed on the inverter, PWM control is performed on the converter, and the phase of the carrier wave for the inverter or the converter is shifted on the basis of AC output, whereby timings of currents flowing into the smoothing capacitor are made different from each other.

Abstract: The present invention relates to a system for increasing the safety of a portable electrical tool (10), comprising: a generator (40) of a radio-electric signal, which generator is electrically coupled to said user (1) so as to inject into the body of the user (1) said radio-electric signal (s(t)), said radio-electric signal (s(t)) then being emitted by said user (1) in the form of an electromagnetic signal; and the portable electrical tool (10), which is arranged to be borne by a member of the user and comprises: a machining member (4); a holding member (2); an actuator connected to the machining member (4); an antenna fastened to the machining member (4) and/or the holding member (2) and arranged to receive a radio-electric signal corresponding to the electromagnetic signal emitted by the user (1).

Abstract: An electronic test measurement system can include a device under test (DUT) and an electronic test instrument that includes a signal input configured to receive an electrical signal from the DUT, a cooling mechanism, and a processor. The processor can be configured to determine a frequency at which the cooling mechanism should operate, cause the cooling mechanism to operate at the determined frequency, select a filter based on the determined frequency, and apply the filter to the electrical signal to reduce interference with the electrical signal resulting from mechanical vibrations of the cooling mechanism.

Abstract: The present application relates generally to Volt-VAR optimization for power distribution systems having advanced metering infrastructure (AMI). Distributed energy resources (DER) such as photovoltaic arrays are becoming prevalent in distribution systems. These DER systems inject power into the distribution system which can cause unfavorable changes, such as a rise in voltage across the feeder lines of the distribution system. Existing control proposals suffer from a number of shortcomings, drawbacks and disadvantages. In some instances, traditional controllers for distribution systems with DER systems may require information related to the arrangement of the distribution system which is unknown and cannot be provided by the advanced metering infrastructure. There remains a significant need for the apparatuses, methods, systems and techniques disclosed herein.

Abstract: A motor vehicle device includes a movable windowpane, which can be moved into a first end position, and an actuation mechanism having a touch-sensitive surface and by which a sliding movement of an operating element on the surface can be detected. The actuation mechanism cooperates with a drive of the windowpane in such a way that the windowpane is moved into the first end position when a sliding movement occurring at least in part in a predetermined first movement direction is detected.

Abstract: A converter module for converting three-phase electrical power to single-phase electrical power. The converter module includes three-phase terminals and a full-wave bridge rectifier. The three-phase terminals are configured to be electrically coupled to a three-phase power source from which a three-phase power signal is provided. The full-wave bridge rectifier is electrically coupled to the three-phase terminals and configured to rectify the three-phase power signal to a direct current (DC) power signal.

Abstract: A low-cost, simple ultrasonic sensing system has an increased detection range. The ultrasonic sensing system may be implemented as part of a load control system for controlling the power delivered from an AC power source to an electrical load. The load control system may comprise a load control device for controlling the power delivered to the electrical load, an ultrasonic receiver for receiving ultrasonic waves characterized by an ultrasonic frequency, and an ultrasonic transmitter located remotely from the ultrasonic receiver. The load control device controls the power delivered to the electrical load in response to the ultrasonic waves received by the ultrasonic receiver. The load control device may include the ultrasonic receiver and may be a wall-mounted load control device. The ultrasonic receiver may be a wireless ultrasonic receiver for transmitting wireless signals to the load control device in response to the ultrasonic waves received by the ultrasonic receiver.

Abstract: Systems and methods are disclosed for on-line monitoring of the condition of insulation in electrical devices employing a differential current sensor. In certain embodiments a monitor that can be fitted to existing electrical devices by attachment of the sensor to a pair of phase cables is provided. In other embodiments, an electrical device configured with an insulation monitor is provided.

Abstract: The invention provides a pilot light ignition system comprising a solenoid valve and a flame safeguard controller. Also provided is a pilot light ignition process comprising a normally open solenoid valve that shuts down a main burner gas supply while the pilot is being lit. A fail last position solenoid can also be utilized with the system.

Abstract: An item of furniture includes at least one movable element and an actuating system for adjusting the movable element. The actuating system includes at least one linear actuator, a power supply unit and a manual control device. The power supply unit and the manual control device are electrically connected to the linear actuator, which has a diagnostic system having at least one illuminated indicator for indicating the functioning of the three components. The diagnostic system allows the user or a repair service to determine which of the three components is faulty, so that only the faulty component has to be replaced. Repair costs can be reduced significantly. The replacement of one of the three components can also then be carried out without difficulty by the user or a repair service.

Abstract: A machine tool includes a rotational drive unit that rotationally drives a main spindle to which a tool is attached, a moving unit that relatively moves the tool with respect to the workpiece, and a rotational speed adjustment unit that adjusts a rotational speed of the main spindle by controlling the rotational drive unit. The machine tool also includes a machining start determination unit that determines that machining of the workpiece by the tool is started with the rotational drive unit rotationally driving the main spindle. The rotational speed adjustment unit exponentially raises the rotational speed of the main spindle after reducing the rotational speed to a predetermined rotational speed set in advance, on condition that the machining start determination unit determines that the machining is started, and causes the rotational speed of the main spindle to reach a value of the rotational speed before being reduced.

Abstract: An improper wiring detecting system of a parallel inverter system can include two polyphase inverters connected in parallel, and voltage detectors to detect an output voltage of each of the phases of each of the inverters. Control units can control turning-on and -off of semiconductor switching devices of the inverters, and a wiring condition deciding means can operate at least one control unit to turn-on specified switching devices in at least one inverter to form a closed circuit between arbitrary two phases of the at least one inverter. The system can carry out comparisons among values of output voltages of the two inverters corresponding to respective phases and detected by the voltage detectors, and make a decision as to whether wiring is correct or not on the basis of the results of the comparisons.

Abstract: An apparatus and method for resetting a motor controller. It is determined whether a tripping of the motor controller is accompanied by an undesired condition elsewhere in a power system wherein an alternating current bus receives alternating current power from a generator, a power converter converts the alternating current power on the alternating current bus to direct current power on a direct current bus, and the direct current power on the direct current bus powers the motor controller. In response to a determination that the tripping of the motor controller is accompanied by the undesired condition, it is determined whether the undesired condition is less than a threshold for more than a time delay. The motor controller is reset in response to a determination that the undesired condition is less than the threshold for more than the time delay.

Abstract: A motor-driven appliance system in one aspect of an embodiment of the present disclosure includes a motor-driven appliance having a motor, at least one control circuit, and a communication device. The control circuit is configured to execute a process related to control of the motor-driven appliance. The communication device is configured to communicate with an external device. The control circuit is further configured to switch, when at least one predetermined sleep condition is satisfied, from an active mode in which the control circuit performs a normal operation to a sleep mode in which the control circuit stops part of the normal operation to thereby suppress power consumption; and to switch to the active mode when the communication device receives an external wakeup signal transmitted from the external device while the control circuit is in the sleep mode.

Abstract: An exemplary motor driving system includes a power source, a driving circuit, a controller, a motor, and a protection circuit. The driving circuit including at least one switching device coupled with the power source. The motor includes a plurality of windings. The motor is coupled with the driving circuit and driven by the driving circuit. The controller is configured to provide first switch signals to the at least one switching device of the driving circuit in a normal mode. The protection circuit is coupled with the controller, and configured to generate second switch signals based at least in part on a fault signal in a fault mode and provide the second switch signals to the at least one switching device of the driving circuit so as to reconstruct circuit loops between the driving circuit and the plurality of windings. A method for operating the motor driving system is also described.

Abstract: The present invention provides a power converter which, while ensuring safety, implements control for the flow of a constant current in a specified switching element, more accurately determines the lifetime of a switching element, and reduces the number of temperature detectors. The power converter is provided with a mechanism which causes a brake device to operate or which confirms that a brake mechanism is operating. The power converter supplies current to the d-axis and the q-axis of a rotational coordinate system, within the range of the braking torque of the brake mechanism, and passes the desired current to the desired element. Furthermore, temperature detectors are attached only in chips in sections where a crack readily develops in the upper solder layer or peeling is readily generated in the wire bonding, and in chips where a crack readily develops in the lower solder layer.

Abstract: When two (in particular electric) drives operate on wheels decoupled from each other in a motor vehicle, the drives should have an identical construction and the same properties. However, if one drive is stronger than the other, distribution factors other than 0.5 must define the target torque for the two drives, i.e. the fraction of a total torque, in order to provide a correction. The distribution factors are determined while the motor vehicle is in operation. For this purpose, a steering angle and an additional quantity such as the lateral acceleration or the yaw rate are determined and a check is performed to determine if the additional quantity has the correct functional dependency on the steering angle.

Abstract: A control (18) for a seat belt positioning device (10) includes a motor (12) for positioning a seat belt component (16). A locking tongue sensor (20) generates a locking tongue signal (S) depending on whether a locking tongue is inserted in a belt buckle (16). A trigger circuit (22) connected to the locking tongue sensor (20) generates a trigger signal (TR, TR1, TR2, VT, TM) in response to the locking tongue signal (S) A timer (32) or a motor load circuit (33) connected to the trigger circuit (22) generates a motor signal (M) having a predetermined period or depending on a motor load in response to the trigger signal (TR, TR1, TR2, VT, TM). A motor control circuit (34) connected to the timer (32) and the trigger circuit (22) turns the motor on and off in response to the motor signal (M). The direction of motion of the motor (12) is selected depending on the trigger signal (TR, TR1, TR2, VT, TM).

Abstract: A motor control device, which receives at least two emergency stop signals, includes an LSI, a PWM signal transmission circuit, a drive circuit, and an inverter circuit. The LSI generates PWM signals. The PWM signal transmission circuit transmits the PWM signals. The drive circuit generates inverter drive signals. The inverter circuit includes a P-side power switching device and an N-side power switching device. The drive circuit includes a P-side drive circuit for driving the P-side power switching device, and an N-side drive circuit for driving the N-side power switching device. One of the emergency stop signals is inputted to the P-side drive circuit and the PWM signal transmission circuit. The other emergency stop signal is inputted to the N-side drive circuit and the PWM signal transmission circuit. In response to the receipt of an emergency stop signal, the PWM signal transmission circuit stops transmitting the PWM signals, and the drive circuit stops outputting the inverter drive signals.

Abstract: Various embodiments of a motor controller are disclosed. In exemplary embodiments, the motor controller can be instructed to select an operational profile based on the duration of power loss. In an exemplary embodiment, the system comprises a battery or capacitor to provide power to a microcontroller in the motor controller while power is disconnected.

Abstract: A fan control system for a computer system is provided. The fan control system includes a power sensor and a controller. The power sensor detects the power dissipated by a target device in the computer system. The controller calculates a suggested airflow speed required for the target device and thus outputs a control signal for controlling a fan within the computer system according to at least the dissipated power.

Abstract: An obstacle detection system includes a first component and a second component. The motor is configured to move the second component toward the first component. Radio frequency identification tags (RFIDs) are connected to one of the first component and the second component. A controller is operatively connected to the motor and has a transmitter operatively connected to the other of the first component and the second component. The transmitter is operable to create a magnetic field between the first component and the second component. Each of the RFIDs is operable to provide a respective signal in response to the field. The controller is configured to modify power delivery from a power source to the motor when the respective signals received by a receiver change due to at least a portion of the magnetic field being at least partially blocked or attenuated. A method of detecting an obstacle is also provided.

Abstract: Embodiments of the invention provide a method of operating a motor connected to a power device having a reduced current rating. The motor can include an increased torque constant and/or an increased back electromagnetic force constant in order to decrease a peak current in relation to the reduced current rating of the power device. The method can include increasing a length of time the motor can operate at the peak current without overheating. A phase angle of the motor can be advanced in order to achieve a continuous operating point with the power device having the reduced current rating.

Abstract: An apparatus, system, and method are disclosed for controlling fan speed in a power supply. The apparatus measures input power to the power supply and measures the output power provided by the power supply over an interval. The apparatus determines values for the input power and output power and, using the two, determines how much power has been dissipated in the power supply. Power dissipation values are associated with particular fan speeds, and the apparatus adjusts the speed of the fan in the power supply based on how much power was dissipated during the interval. Increasing levels of power dissipation increases the fan speed, and decreasing levels of power dissipation decrease the fan speed.

Abstract: A method for operating an electrically driven actuator having a power supply that has an energy storage unit (7) is provided. At the energy storage unit, an energy quantity meter (8) continuously adds up the amount of energy stored and withdrawn. An actuating process is only carried out when there is sufficient energy available in the energy storage unit to carry out the actuating process in full.

Abstract: A fan module, especially a fan module which may reduce a rotating speed of a fan automatically when an object with static electricity gets into the fan is provided. The fan module includes a frame, a fan, an electrostatic induction unit and a controller. The fan is disposed in the frame, and the electrostatic induction unit is disposed on the frame and adjacent to the fan. The controller is electrically coupled to the electrostatic induction unit. When an object with static electricity gets into the electrostatic induction unit, the electrostatic induction unit outputs a sensing value to the controller. The controller determines whether to reduce the rotating speed of the fan according to the sensing value.

Abstract: The invention provides an antitrap protection system for a moving system.

Abstract: The motor position controller inputs a command pulse signal and a desired pulse form setting, and drives a motor based on the command pulse signal. The motor position controller includes a position command generating device configured to generate a position command signal from the command pulse signal in accordance with the inputted desired pulse form setting, a motor controlling part configured to supply power to the motor based on the position command signal, and a first conformity determination device configured to determine the conformity of the desired pulse form setting and the command pulse signal.

Abstract: A motor control device, which receives at least two emergency stop signals, includes an LSI, a PWM signal transmission circuit, a drive circuit, and an inverter circuit. The LSI generates PWM signals. The PWM signal transmission circuit transmits the PWM signals. The drive circuit generates inverter drive signals. The inverter circuit includes a P-side power switching device and an N-side power switching device. The drive circuit includes a P-side drive circuit for driving the P-side power switching device, and an N-side drive circuit for driving the N-side power switching device. One of the emergency stop signals is inputted to the P-side drive circuit and the PWM signal transmission circuit. The other emergency stop signal is inputted to the N-side drive circuit and the PWM signal transmission circuit. In response to the receipt of an emergency stop signal, the PWM signal transmission circuit stops transmitting the PWM signals, and the drive circuit stops outputting the inverter drive signals.

Abstract: A controller able to efficiently operate an electric motor of an axial air-gap type as an electric motor and an electricity generator is provided.

Abstract: A control apparatus for an opening/closing member of vehicle includes a driving member for moving an opening/closing member for a vehicle, speed detecting means for detecting a drive speed of the driving member and control means for calculating a current speed difference between the drive speed of the driving member and a target drive speed, for calculating a current change amount between the calculated current speed difference and a previous speed difference calculated a predetermined time before, for calculating a current deviation by integrating the current change amount and for detecting an entrapment of an object by comparing the calculated deviation to a predetermined threshold.

Abstract: The invention broadly contemplates a safety arrangement that transitions a moving component, for example a cooling fan housed within a chassis of an electronic device, between a first operating mode or condition and a second operating mode or condition. The first operating mode is a normal operating mode, allowing the component (fan) to operate (rotate) at full speed. The second operating mode is a safety or service mode, allowing the component (fan) to operate (rotate) at a reduced speed such that it is compliant with applicable safety regulations.

Abstract: The operating shaft of an auto radiator fan is adapted for connection with an electric motor whereby the electric motor rotates the operating shaft, per se, to provide rotation to the auto drive shaft. A control circuit is arranged for connecting the supplemental battery with the electric motor when the auto is driven and disconnecting the supplemental battery from the electric motor when the auto is parked, slowing down and stopping.

Abstract: A hybrid electronic control unit sends a combustion start command to an engine ECU when the rotation speed of an engine reaches a combustion start rotation speed by engine cranking. The engine ECU sends an initial explosion advance notification to the hybrid electronic control unit when the crank position of the engine reaches a specific position prior to an ignition timing of an initial explosion cylinder by a preset crank angle ?ec. Ignition of the initial explosion cylinder is performed at a timing when the crank position is further rotated by the preset crank angle ?ec. The hybrid electronic control unit sends a torque command in view of a counter torque T? to a motor ECU after elapse of a preset time period tv.

Abstract: An apparatus, system, and method are disclosed for controlling fan speed in a power supply. The apparatus measures input power to the power supply and measures the output power provided by the power supply over an interval. The apparatus determines values for the input power and output power and, using the two, determines how much power has been dissipated in the power supply. Power dissipation values are associated with particular fan speeds, and the apparatus adjusts the speed of the fan in the power supply based on how much power was dissipated during the interval. Increasing levels of power dissipation increases the fan speed, and decreasing levels of power dissipation decrease the fan speed.

Abstract: A method for operating a reversible polyphase rotating electrical machine (2) in a motor vehicle, which consists in performing the high-level and low-level management of the machine with a remote-control unit (1), which exchanges physical data, via a plurality of links (3), with a power module (20) integrated in or immediately proximate the machine (2). The method and electrical machine may be an alternator-starter.

Abstract: The vehicle-use start control system includes a control section which initializes a control signal outputted from the control section when a power supply voltage supplied is lower than or equal to a predetermined initialization voltage, and sets a voltage level of the control signal depending on the detected shift range of the automatic transmission, and a latch section which outputs a start permission/inhibition signal a voltage level of which is indicative of starting of an engine of the vehicle being permitted or inhibited. The latch section latches the voltage level of the start permission/inhibition signal when the power supply voltage is predicted to be lower than or equal to the initialization voltage during the start processing period.

Abstract: A fan module, especially a fan module which may reduce a rotating speed of a fan automatically when an object with static electricity gets into the fan is provided. The fan module includes a frame, a fan, an electrostatic induction unit and a controller. The fan is disposed in the frame, and the electrostatic induction unit is disposed on the frame and adjacent to the fan. The controller is electrically coupled to the electrostatic induction unit. When an object with static electricity gets into the electrostatic induction unit, the electrostatic induction unit outputs a sensing value to the controller. The controller determines whether to reduce the rotating speed of the fan according to the sensing value.

Abstract: A fan with failure detecting function includes a power input terminal, a current limiting resistor, a light emitting diode (LED), and a fan motor. The power input terminal is coupled to the anode of the LED via the current limiting resistor. The cathode of the LED is coupled to one terminal of the fan motor, another terminal of the fan motor is grounded.

Abstract: When a short-circuit failure of any of switch portions (13) including switch elements (11) and parallel-connected feedback diodes (12) of an inverter circuit (7) is detected during the operation of a motor (1), a switch portion (13) where the short-circuit failure has occurred is checked for whether it is on the positive polarity side or the negative polarity side. The switch elements (11) are so controlled that all the switch portions (13) on the same polarity side as where the short-circuit has occurred are brought into a conducted state and all the others disconnected. This prevents a large electric current from flowing into each switch portion of the inverter circuit without requiring any switch to block the power distribution between a motor and the inverter circuit when a short-circuit failure of the switch portion of the inverter circuit occurs.

Abstract: A wiper unit controller for performing wiping at an accurate intermittent wipe cycle. The controller stores a maximum resistance value of a variable resistor having a resistance value that varies in accordance with the intermittent wipe cycle. When a reference time elapses after calculating a resistance value that exceeds the stored maximum resistance value, a computer renews the maximum resistance value with a new maximum resistance value.

Abstract: A fan control circuit for controlling a fan to dissipate heat from an electrical device includes a comparator and an electrical switch. The comparator has a comparator input terminal, a comparator reference terminal, and a comparator output terminal. The comparator input terminal is connected to a power source via a first resistor and is also connected to the electrical device to receive a working current draw of the electrical device. The comparator reference terminal is receiving a reference voltage. The comparator output terminal is capable of outputting a comparison result between a voltage received by the input terminal and the reference voltage. The electrical switch has a control terminal, a first terminal, and a second terminal. The control terminal is connected to the comparator output terminal of the comparator to receive the comparison result. The first terminal is connected to the power source via a resistor. The second terminal is grounded and connected to the terminal via a fan.

Abstract: A hybrid electronic control unit sends a combustion start command to an engine ECU when the rotation speed of an engine reaches a combustion start rotation speed by engine cranking. The engine ECU sends an initial explosion advance notification to the hybrid electronic control unit when the crank position of the engine reaches a specific position prior to an ignition timing of an initial explosion cylinder by a preset crank angle ?ec. Ignition of the initial explosion cylinder is performed at a timing when the crank position is further rotated by the preset crank angle ?ec. The hybrid electronic control unit sends a torque command in view of a counter torque T? to a motor ECU after elapse of a preset time period tv.

Abstract: A contact detection apparatus that allows faster detection and a pinch prevention apparatus equipped with such a detection apparatus are provided. The contact detection apparatus includes a first electrode (430) made of a flexible conductive material and extending throughout a contact detection range, a second electrode (440) apart from the first electrode and extending on the back side of the first electrode, and detection means for detecting contact of an object with the first electrode based on the capacitance of the first electrode. The first electrode is made of a conductive resin containing an embedded conductor.

Abstract: A method for operating a reversible polyphase rotating electrical machine (2) in a motor vehicle which consists in performing the high-level and low-level management of the machine with a remote-control unit (1), which exchanges physical data, via a plurality of links (3) with a power module (20) integrated in or immediately proximate the machine (2). The method and electrical machine may be an alternator-starter.

Abstract: A universal controller for an automatic door system including a door carried on a frame for movement along a predetermined path of movement between open and closed positions. The universal controller includes a housing for mounting the controller in a stationary position relative to the door frame and an assembly including a processor carried by the housing for processing data operatively received from a plurality of sensors and relating to the operation of the movable door. The processor is configured to generate operational values which are transmitted to and control a drive motor used to move the door between the open and closed positions. The assembly further includes an arrangement for adjusting the operational values generated by the processor and transmitted to the drive motor. A modular harness connects the controller to the drive motor and to the sensors.

Abstract: A system and method for sensing capacitance at the edge of a movable barrier and for detecting an obstruction includes positioning a conductive member within or about a holder. A sensed capacitance between the conductive member and ground. A controller is coupled to the sensor. The controller determines whether an obstruction exists within a path of the barrier by analyzing the sensed capacitance. The conductive member and holder move away from a physical reference as the physical reference is approached such that the sensed capacitance between the conductive member and the physical reference remains below a predetermined threshold.