Abstract: A method for controlling a multi-phase electric machine, operable at least in generator mode, whose phase terminals in an active bridge rectifier are respectively connected, via addressable first current valves capable of being switched on and shut off, to a first DC voltage terminal and via second current valves to a second DC voltage terminal. The method includes: in a generator mode of the electric machine after occurrence of a load dump, repeatedly initiating and discontinuing phase short circuits of the phase terminals via the first current valves. A magnitude characterizing a natural frequency of the electric machine is ascertained, and the first current valves are addressed with a switching frequency in order to initiate and discontinue the phase short circuits on the basis of the magnitude characterizing the natural frequency of the electric machine.

Abstract: A system and method for monitoring a level of material in a storage bin, including a gear train, a gear train shaft rotatably coupled to the gear train, a drive shaft, a coupling system to couple the gear train shaft to the drive shaft, a paddle coupled to the drive shaft to rotate in unison therewith, the paddle configured to engage a material in the storage bin when the level of material reaches a threshold level, and a stepper motor. A controller may be communicatively coupled to the stepper motor wherein the controller is configured to monitor the running state and the stall state of the stepper motor.

Abstract: The invention relates to a device comprising a lever associated with a stand carrying a rocker connected to the stand by a pivot connection about a first axis, the lever being connected to the rocker by a pivot connection about a second axis, a first transmission shaft with a first connection mechanism connecting the lever to the first transmission shaft, and a second transmission shaft with a second connection mechanism connecting the control lever to the second shaft. The first shaft and the first connection mechanism being connected by a pivot connection about a fifth axis that is inclined relative to the first axis and to the third axis, and the second shaft and the second connection mechanism are connected by a pivot connection about a sixth axis that is inclined relative to the second axis and to the fourth axis.

Abstract: A hybrid vehicle includes an electronic control unit that executes first discharge control in a state where an engine is stopped in the case where a collision detector detects a collision of the hybrid vehicle. The first discharge control includes bringing all switching elements on either one of an upper arm side and a lower arm side of either one of a first inverter and a second inverter into ON states; bringing another inverter into a gate blocking state; and discharging electric charges of a capacitor by using a discharge device until a voltage of the capacitor becomes lower than a threshold.

Abstract: A robotic pool cleaner includes a housing with an interior chamber. A filter within the interior chamber filters water drawn through a water inlet provided in a bottom portion of the housing. Filtered water is discharged through a discharge port provided in a upper portion of the housing. Rotatably-mounted supports attached to the housing support and guide the cleaner on the pool surface. An electric motor mounted in the chamber is configured to move the cleaner on a pool surface. A pool cleaner controller electrically connected to the electric motor controls movement of the cleaner and receives communication signals transmitted by a remote power supply over a two-wire electric cable having first and second conductors. The pool cleaner controller is configured to provide uninterrupted electric power to the electric motor while the pool cleaner controller also receives pulsed communication signal from the remote power supply over the two-wire cable.

Abstract: Periodic disturbance occurs in current etc. due to offset error and gain error of a current sensor used in a control device. A voltage command value is generated from a current command value and a current detection value by the current sensor in a current control section. The generated voltage command value is inputted to a plant model section, and a virtual current value is calculated. The virtual current value is inputted to a periodic disturbance observer via a coordinate transform section, and a compensation value is calculated. The compensation value is superimposed on the current detection value via a coordinate inverse-transform section, and the current detection value of the current sensor is corrected.

Abstract: A system for controlling the operation of a motorized wheel including a controller configured to control the operation of a motor for driving the motorized wheel, and a handheld device configured to receive inputs associated with the operation of the motor and to transmit instructions corresponding to the received inputs to the controller to control the operation of the motor via a wireless communication medium. The handheld device includes a main portion having a handgrip and a tail portion being biased toward the main portion to form an attachment mechanism by the main portion in cooperation with the tail portion, the attachment mechanism for attaching to a remote surface. The handheld device including a display for displaying information associated with the operation of the motorized wheel.

Abstract: Disclosed is a teaching method of setting a location of a robot that transports a substrate onto a rotatable support plate that supports the substrate, the teaching method including setting the location of the robot by using decentering values that are acquired by performing an operation of loading the substrate on the support plate with the robot, rotating the support plate by a preset angle, unloading the substrate from the support plate with the robot, and detecting a decentering value of the substrate positioned on a hand of the robot a plurality of times.

Abstract: Disclosed is a motor unit including: an electric motor; a motor housing (6) configured to accommodate the electric motor; and a control substrate (70) including a sensor element (72S) to detect a position of an inner rotor of the electric motor in a rotational direction. The motor housing (6) includes a substrate accommodating portion (80) configured to accommodate at least a portion of the control substrate (70); a positioning portion (81) that is formed in the substrate accommodating portion (80), and positions the control substrate (70); and a screw configured to fix a stator of the electric motor to the positioning portion (81).

Abstract: A runtime coordination subsystem allows programmers of multi-mover, linear motion systems to provide simple commands to the movers without concern for the presence of other movers on the track. The runtime coordination subsystem manages proper separation distances to prevent collisions and automatically queue movers in contention situations. In addition the runtime coordination subsystem permits a specialized multi-mover command controlling movers in unison with constant separation.

Abstract: A driver circuit for driving an electrical motor coil is provided which comprises combined switched inductance boost voltage converter circuitry and switched inductance buck voltage converter circuitry. An input node of the driver circuit is provided to be coupled with the electrical motor coil, which provides the inductive element of both the boost and buck circuitry. Further the boost and buck circuitry share a storage capacitor, which provides the capacitive element of each circuitry, and a voltage developed across the storage capacitor by the boost circuitry forms an input of the switched inductance buck voltage converter circuitry.

Abstract: This linear motor apparatus includes: a first linear motor and a second linear motor, movable bodies of which move in the same direction in a linked manner; a first control portion that causes the first linear motor to produce thrust to apply a load to a pressurizing target via the movable bodies; and a second control portion that causes the second linear motor to produce thrust and controls the thrust, wherein, if the first control portion is causing a load to be applied to the pressurizing target, then the second control portion causes the second linear motor to produce thrust that cancels an external force produced to the movable bodies.

Abstract: The present invention provides a motor driving method, a battery pack, and a semiconductor device capable of variable-controlling a bus voltage from a battery pack. A battery pack outputting a bus voltage to a positive voltage node using a negative voltage node as a reference, an inverter unit converting the bus voltage to AC voltage by switching according to a PWM signal and driving a motor, and a motor control unit generating the PWM signal are used. The motor control unit outputs a voltage instruction signal for instructing the bus voltage toward the battery pack. The battery pack variable-controls the number of cells coupled in parallel between the positive voltage node and the negative voltage node so as to obtain the bus voltage according to the voltage instruction signal.

Abstract: A system and method for providing variable power is disclosed. The system includes a power supply which provides power to at least one instrument. A pedal comprises a variable resistor that is configured to produce a resistance value within a predetermined range based on an amount of pressure which is being applied to the pedal. The voltage being supplied to the instrument is varied in accordance with the resistance value produced at the pedal.

Abstract: A conveyance system includes a car; a machine for imparting motion to the car, the machine including a stator and a rotor, the stator including 12*k stator teeth, the rotor including 11*k rotor poles, wherein k is a natural even number, the machine including windings located at the stator teeth, the windings arranged in 6 phases; and a drive unit for providing drive signals to the machine, the drive unit including a plurality of drives, the number of drives being an integer multiple of 2.

Abstract: A drive apparatus includes a first power storage, a second power storage, an electric motor, a voltage booster, an electric device. The second power storage is superior to the first power storage in energy to weight density and is inferior to the first power storage in output to weight density. The electric motor is to be driven with power supplied from at least one of the first power storage and the second power storage. The voltage booster is to boost a voltage output from the first power storage. The voltage booster includes a switch to electrically connect or disconnect the first power storage to at least one of the electric motor and the second power storage. The electric device is provided between the first power storage and the voltage booster. The voltage output from the second power storage is higher than a guaranteed operating voltage of the electric device.

Abstract: A bed adjustment apparatus and method includes a linear actuator attached to a bed to move a portion of a mattress. A control box activates the linear actuator based on commands and sequences received from a remote control. The control box optionally includes a PLC to store the commands and sequences. The remote control optionally communicates wirelessly with the control box. The remote control allows a user to select and send the control box commands and sequences to control the linear actuator. The sequences are pre-installed, user programmed, received from another remote, or downloaded as desired. The apparatus allows a user to alleviate pressure points during sleep without requiring the user to adjust their sleeping position by adjusting the mattress based on a selected sequence.

Abstract: A container is provided. A main body has a barrel body and a cover body, the cover body is normally in a first position and optionally movable to a second position. An electronic processing unit is arranged on the main body. A sensing device, a power connecting device and a driving device are arranged on the main body and electrically connected to the electronic processing unit. When the cover body is in the first position, the cover body covers the placement opening, the cover body and the barrel body are in a fixed relative position; and when the cover body is in the second position, the cover body is remote from the placement opening. When the cover body receives an external force to move away from the barrel body, the driving device actuates the cover body to move from the first position to the second position.

Abstract: A communication system for exchanging data between an actuator system and an external device, e.g. an operation where the communication system in the form of a gateway and a codex interprets the information in the bidirectional data stream and communicates the information on both sides. The communication system is furthermore provided with an RFID circuit integrated in a handset. The RFIC circuit can communicate information about the gateway's unique identification, also known as an MAC-address. This achieves easy connection of an external device to the actuator system without having to enter data manually.

Abstract: A motor-driven compressor is provided with a motor including a rotor, a housing including an inlet through which low-pressure refrigerant serving as a low-pressure fluid is drawn in, a compression unit that compresses the low-pressure refrigerant and discharges compressed high-pressure fluid, an inverter that drives the motor, and a controller that controls the inverter. If the rotor is activating in a reverse direction that is opposite to a forward direction when activating the motor, the controller obtains a position of a d-axis of the rotor and controls the inverter so that current flows to the obtained d-axis and so that frequency of current flowing to the motor decreases as time elapses.