A control method for a washing machine includes: a mode change step in which the configuration of a coupler is moved by operating a solenoid module in such a way that a drive shaft for spinning a pulsator and a dewatering shaft for spinning a washing tub are axially coupled or decoupled; and a mode check step in which a drive motor for rotating the drive shaft is operated and the load of current outputted to the drive motor is sensed, the mode check step comprising a coupler setting step in which, if the load of current outputted to the drive motor does not satisfy a set load value, the solenoid module is operated to reposition the coupler.

A hybrid electric aircraft propulsion system includes both a turbine engine and an electric motor. A power management system controls operation of the electric motor and a pitch angle of a propeller associated with the propulsion system. A disconnect switch is provided to isolate the electric motor by mechanical decoupling the electric motor from the aircraft propulsion system.

An electric tool includes a motor, a holder, a transmission mechanism, a torque detector, an electronic clutch, and an inhibiting mechanism. The holder is configured to hold a tip tool thereon. The transmission mechanism transmits motive power of the motor to the holder. The torque detector detects a torque value about output torque provided by the tip tool. The electronic clutch is activated when a predetermined condition about the torque value detected by the torque detector is satisfied and thereby controls the motor to make the motor stop running. The inhibiting mechanism is interposed between the motor and the holder. The inhibiting mechanism inhibits transmission of inertial force from the motor to the holder in response to activation of the electronic clutch.

In a wheel drive apparatus, a clutch is configured to switch a coupling mode between a first rotating shaft of a first rotating electrical machine and a second rotating shaft of a second rotating electrical machine to any one of (i) a power transmission mode in which power transmission is enabled between the first rotating shaft and the second rotating shaft; and (ii) a power interruption mode in which power transmission is interrupted between the first rotating shaft and the second rotating shaft.

Disclosed are systems and methods for protecting an escrow clutch of a self-service terminal. The systems and methods may include actuating a motor of the self-service terminal to cause an escrow clutch of the self-service terminal to spin at a rate. As the clutch spins, a determination as to when a clutch slippage exceeds a preset slippage rate may be made. When the clutch slippage exceeds the preset slippage rate, the motor may be actuated to cause the escrow clutch to spin at a second rate. The second rate may less than the first rate.

Disclosed are systems and methods for protecting an escrow clutch of a self-service terminal. The systems and methods may include actuating a motor of the self-service terminal to cause an escrow clutch of the self-service terminal to spin at a rate. As the clutch spins, a determination as to when a clutch slippage exceeds a preset slippage rate may be made. When the clutch slippage exceeds the preset slippage rate, the motor may be actuated to cause the escrow clutch to spin at a second rate. The second rate may less than the first rate.

A hybrid-electric genset includes a direct current (DC) bus, an engine, and an electric generator configured to receive mechanical power from the engine and generate first alternating current (AC) power. The hybrid-electric genset further includes an inverter configured to convert the first AC power to DC power and output the DC power to the DC bus. The hybrid-electric genset further includes a controller configured to control the engine to increase or decrease the AC power output by the electric generator. The DC bus is configured to attach to at least one battery pack or supercapacitor. The at least one battery pack or supercapacitor is configured to maintain a nominal voltage of the DC bus approximately at a nominal battery pack voltage of the at least one battery pack.

Systems and methods for implementing an electronic clutch in a powered fastener driver. One fastener driver includes a motor, a trigger, a position sensor, a speed sensor, and a controller. The position sensor is configured to sense a position of the lifting assembly. The speed sensor is configured to sense a speed of the motor. The controller is configured to provide power to the motor. The controller is configured to receive speed signals from the speed sensor indicative of the speed of the motor, and determine whether the speed of the motor has dropped by a speed drop threshold within a first period of time. The controller is configured to activate an electronic clutch to electronically brake the motor for a second period of time. In response to the second period of time having passed, the controller is configured to provide power to the motor.

A middle phase power-fetching type phase front/phase tail synchronized modulation circuit, comprising: a power supply unit, that is used to fetch power from the middle phase of an ordinary AC voltage waveform, and supplies it to a phase front/phase tail modulation unit as a normal operating voltage after rectification; and a phase front/phase tail modulation unit, it includes an MCU microcomputer, to control a driving circuit to turn-on, and control synchronously at least two bi-directional electronic power element, to generate a phase front/phase tail turn-on modulation signal. As such, while performing synchronous modulation from phase middle, phase front/phase tail can be retracted inward or expanded outward at the same time, so that phase front/phase tail turn-on output voltage average values complement each other, hereby achieving stable and modulated power supply.

A powered fastener driver includes a housing, a cylinder within the housing, the cylinder containing a pressurized gas, a piston within the cylinder and movable from a top-dead-center position to a bottom-dead-center position, a driver blade movably coupled to the piston, a lifter, a drive unit configured to provide torque to the lifter, and a sensor. The driver blade has a plurality of teeth defining a predetermined number of edges. The sensor is configured to detect an edge of one or more of the plurality of teeth and a controller in communication with the drive unit and the sensor. The controller is configured to count a number of edges detected by the sensor, compare the number of detected edges to the predetermined number of edges, and stop the drive unit when the number of detected edges is less than the predetermined number of edges.