A motor-driven appliance of one aspect of the present disclosure includes a motor and a controller. The controller includes a physical quantity detector, a variation deriving portion, a loaded condition detector, and driving output portion. The physical quantity detector detects a physical quantity related to an operating state of the motor. The variation deriving portion derives a variation in the physical quantity based upon the physical quantity detected by the physical quantity detector. The loaded condition detector detects that the motor is under a loaded condition in which the motor is applied with a load based upon the variation derived by the variation deriving portion. The driving output portion generates the driving output corresponding to whether the loaded condition is detected by the loaded condition detector.

Inventive concepts herein relate to mitigating phase current oscillations and vibrations in a spinning, lightly loaded three-phase electric motor. A motor starter can transition between various acceleration profiles defined by unique firing angles and/or firing angle rates of change. These transitions adjust the firing angle of thyristors, which directly manage each phase of a three-phase power supply to the motor. The motor start can identify when a motor has residual motion from prior operation and can modulate the firing angle and/or firing angle rate of change accordingly to reduce a duration of time that issues such as phase current oscillations or vibrations might occur.

A linear actuator and a method for heating a linear actuator. An electric motor is configured to generate rotational motion in a first operating mode of the linear actuator. A transmission mechanism is configured to convert the rotational motion generated by the electric motor into translational motion. The linear actuator is further configured to generate heat in a second operating mode.

The present disclosure relates to a method and a device for end position detection of actuators.

An in-wheel motor cooling apparatus may include: a braking data calculation part configured to calculate a braking severity related to a braking data of a braking device of a driving state; a motor temperature measurement part configured to measure a temperature and a temperature change of the in-wheel motor of a driving-finished state; a driving controller configured to start driving of a water pump, in the driving-finished state, when the braking severity and the temperature change is above a predetermined standard; and a cooling flow control part configured to determine a cooling flow rate of the water pump in real-time based on a temperature of the in-wheel motor, when the driving of the water pump is started.

The invention relates to an automatic swing door (10, 100), comprising a door controller (22, 122), 10 further comprising a door leaf arrangement (12, 112) that is pivotably attached to a door frame (30), where the door leaf arrangement (12, 112), comprises a door leaf (14, 114) that has a following face (15b) that is facing to the door opening (20) and a leading face (15a) that is facing away from the door opening (20), a hinged edge (15d) and a main closing edge (15c) that lies opposite to the hinged edge (15d), the door leaf arrangement (12) comprises a leading face sensor (16) that is attached to the 15 leading face (15a) of the door leaf (14), where the leading face sensor (16) provides a scanning field that at least covers a zone that lies next to the leading face of the door leaf.

A vehicle includes a system that performs a method of derating a motor of the vehicle. The system includes a timer and a processor. The processor is configured to start the timer when a temperature of a stator of the motor exceeds a high temperature threshold, select a blend ratio based on a time value on the timer, determine, using the blend ratio, an intermediate derating curve for the motor by interpolating between a first derating curve associated with a first target temperature and a second derating curve associated with a second target temperature greater than the first target temperature, and derate the motor along the intermediate derating curve.

Method for heating a coolant of an electrical traction machine of a motor vehicle, the electrical machine including, in addition to the coolant, a stator including a polyphase winding, the stator being in heat exchange with the coolant, a rotor, and an inverter/rectifier supplying power to the polyphase winding. The inverter/rectifier includes a plurality of switching cells controlled by a control device. The control device of the inverter/rectifier is configured to control the switching cells so as to short-circuit the polyphase winding in predetermined conditions for the purpose of heating the coolant.