An apparatus and method for suppressing torque generation of a three-phase motor, includes a torque determination device that determines a second torque value for suppressing a first torque value due to a zero phase sequence component current of the three-phase motor, a control amount determination device that determines a voltage control amount for generating the determined second torque value, and a controller that is configured to control the three-phase motor according to the determined voltage control amount.

An apparatus and method for suppressing torque generation of a three-phase motor, includes a torque determination device that determines a second torque value for suppressing a first torque value due to a zero phase sequence component current of the three-phase motor, a control amount determination device that determines a voltage control amount for generating the determined second torque value, and a controller that is configured to control the three-phase motor according to the determined voltage control amount.

The invention relates to a control unit (1) for a motorized device (10) comprising: a brushless motor (20), a power supply (30), an operating unit (40), which can be activated by a user, wherein the control unit (1) is designed at least for controlling the commutation of the motor (20) by a plurality of circuit breakers (12, 13, 14, 15, 16, 17) connected to the power supply, and for initiating an electronic (i.e. in particular non-mechanical) braking of the motor, wherein the control unit (1) is deactivated, i.e. switched off, for a rotational speed-dependent duration to by means of a position sensor (50) and is held until then in an active switched-on operating state and, dependent thereon, a control means (60) is provided then to initiate, under automatic control, the shutdown of the device (10).

The invention relates to a control unit (1) for a motorized device (10) comprising: a brushless motor (20), a power supply (30), an operating unit (40), which can be activated by a user, wherein the control unit (1) is designed at least for controlling the commutation of the motor (20) by a plurality of circuit breakers (12, 13, 14, 15, 16, 17) connected to the power supply, and for initiating an electronic (i.e. in particular non-mechanical) braking of the motor, wherein the control unit (1) is deactivated, i.e. switched off, for a rotational speed-dependent duration to by means of a position sensor (50) and is held until then in an active switched-on operating state and, dependent thereon, a control means (60) is provided then to initiate, under automatic control, the shutdown of the device (10).

A motor control apparatus includes a detection unit configured to detect an actual rotation position of a motor, a control unit configured to provide position feedback control on the motor so that the detected actual rotation position sequentially approaches a plurality of target rotation positions, and a processing unit configured to perform, before the position feedback control starts, processing to make an initial position deviation fall within a predetermined range, the initial position deviation being a difference between the actual rotation position and a first target rotation position of the plurality of target rotation positions.

A motor control apparatus includes a detection unit configured to detect an actual rotation position of a motor, a control unit configured to provide position feedback control on the motor so that the detected actual rotation position sequentially approaches a plurality of target rotation positions, and a processing unit configured to perform, before the position feedback control starts, processing to make an initial position deviation fall within a predetermined range, the initial position deviation being a difference between the actual rotation position and a first target rotation position of the plurality of target rotation positions.

An electric working machine in one aspect of the present disclosure includes: a motor; a driver to drive the motor; a first control circuit; and a second control circuit. The first control circuit controls the driver such that the motor rotates in a set rotation direction. The second control circuit is provided separately from the first control circuit. The second control circuit detects a rotation direction of the motor and performs an abnormality handling process to stop rotation of the motor in response to a situation where the detected rotation direction is reverse to the set rotation direction.

An electric working machine in one aspect of the present disclosure includes: a motor; a driver to drive the motor; a first control circuit; and a second control circuit. The first control circuit controls the driver such that the motor rotates in a set rotation direction. The second control circuit is provided separately from the first control circuit. The second control circuit detects a rotation direction of the motor and performs an abnormality handling process to stop rotation of the motor in response to a situation where the detected rotation direction is reverse to the set rotation direction.

A motor control system operable to control a motor includes a motor control circuit and an inverter circuit connected to the motor control circuit and configured to connect to the motor at phase output terminals. The inverter circuit, in response to one or more output control signals indicating a deceleration instruction from the motor control circuit, implements a multi-state deceleration sequence for at least one commutation state of a commutation scheme of the motor.

A drive control system for a linear driver may include a power module, a controller, a motor drive module, a motor, and a position control module. The power module may be connected to the controller, the controller may be connected to the motor drive module, and the position control module may be connected in series between the controller and the motor drive module to form a control loop. The power module may be connected to the motor drive module to input power to the motor drive module, and the motor drive module may be connected to the motor to form a drive loop. The control loop may control the work of the drive loop, and the drive loop may directly form a loop in series connection with the motor and the power module through the motor drive module.