Electronic control units (ECUs) provided with circuits for backing up other ECUs lack versatility and increase costs. In the present invention, motor control ECUs respectively control motors via signal wires that perform motor control. In addition, a dedicated substitute ECU is connected to each motor via signal wires that perform motor control. A substitute control circuit part of the dedicated substitute ECU runs to a network, is continuously receiving malfunction information and stability information via a signal wire, and detects the malfunction of the motor control ECU from said information. Then the dedicated substitute ECU substitutes for the motor control ECU and performs a backup operation to continue control of the motor via the signal wire.

Electronic control units (ECUs) provided with circuits for backing up other ECUs lack versatility and increase costs. In the present invention, motor control ECUs respectively control motors via signal wires that perform motor control. In addition, a dedicated substitute ECU is connected to each motor via signal wires that perform motor control. A substitute control circuit part of the dedicated substitute ECU runs to a network, is continuously receiving malfunction information and stability information via a signal wire, and detects the malfunction of the motor control ECU from said information. Then the dedicated substitute ECU substitutes for the motor control ECU and performs a backup operation to continue control of the motor via the signal wire.

A system for providing electric motor control to a plurality of motor loads. The system comprises a plurality of motor controllers that are configurable into different arrangements of motor controllers. The system further comprises a central controller that is operable to individually set a phase and/or frequency of respective PWM carrier signals for the motor controllers, wherein the central controller is configured to set the phase and/or frequency of the PWM carrier signals for the motor controllers within a respective arrangement of motor controllers differently depending on the configuration of the motor controllers within the arrangement.

Disclosed is a driver IC circuit of an intelligent power module including an upper bridge control signal input end, a lower bridge control signal input end, a PFC control signal input end, a logic input buffer circuit, a first upper bridge driver circuit, a second upper bridge driver circuit, a first lower bridge driver circuit, a second lower bridge driver circuit and a PFC driver circuit. The logic input buffer circuit performs full-wave filtering on control signals. The first upper bridge driver circuit, the first lower bridge driver circuit, the second upper bridge driver circuit and the second lower bridge driver circuit each drives a switch transistor corresponding to a first or second external motor according to one of the control signals. The PFC driver circuit drives an external PFC switch transistor according to one of the control signals. An intelligent power module and an air conditioner are also disclosed.

Disclosed is a driver IC circuit of an intelligent power module including an upper bridge control signal input end, a lower bridge control signal input end, a PFC control signal input end, a logic input buffer circuit, a first upper bridge driver circuit, a second upper bridge driver circuit, a first lower bridge driver circuit, a second lower bridge driver circuit and a PFC driver circuit. The logic input buffer circuit performs full-wave filtering on control signals. The first upper bridge driver circuit, the first lower bridge driver circuit, the second upper bridge driver circuit and the second lower bridge driver circuit each drives a switch transistor corresponding to a first or second external motor according to one of the control signals. The PFC driver circuit drives an external PFC switch transistor according to one of the control signals. An intelligent power module and an air conditioner are also disclosed.

A system, in one embodiment, includes a drive having a housing, a stator disposed in the housing, a rotor disposed in the stator, and a programmable logic controller disposed inside, mounted on, or in general proximity to the housing. In another embodiment, a system includes a network, a first motor having a first integral programmable logic controller coupled to the network, and a second motor having a second integral programmable logic controller coupled to the network. In a further embodiment, a system includes a rotary machine having a rotor and a stator disposed concentric with one another, a microprocessor, memory coupled to the microprocessor, a power supply coupled to the microprocessor and the memory, and a machine sensor coupled to the microprocessor.

A protective redundancy circuit is provided for a power tool having an electric motor. The protective redundant subsystem is comprised of: a motor switch coupled in series with the motor; a motor control module that controls the switching operation of the motor switch; and a protective control module that monitors switching operation of the motor switch and disables the power tool when the switching operation of the motor switch fails. In the context of an AC powered tool, the switching operation of the motor switch is correlated to and synchronized to the waveform of the AC input signal. During each cycle or half cycle, the motor control module introduces a delay period before closing the motor switch and the protective control module determines the operational status of the motor switch by measuring the voltage across the motor switch during the delay period.

A motor control system includes: a converter; two inverters; two alternating-current motors; and a control unit. The control unit is configured to control the system voltage by feedback of a current phase of a current vector of motor current of each of the motors on a d-q coordinate plane so that rectangular wave control of at least one of the first and second motors is performed in a state where the current phase is an optimal current phase, wherein the control unit selects, as a subject of the feedback, the current phase of one of the motors that is larger than the other motor in system voltage deviation obtained based on the current vector.

An electronic switch controller, an electronic switch control method, an electronic switch and an electronic device are disclosed. The processor comprises voltage-stabilized power supplies, a processor and a driving circuit; the processor is connected between the voltage-stabilized power supplies and a measurement device to receive working parameters of the power supply, a load and the electronic switch measured by the measurement device, read duty cycle parameters matching with the working parameters, calculate a new duty cycle with the duty cycle parameters and the working parameters, adjust the current control signal to a PWM signal having the new duty cycle, and send the PWM signal to the driving circuit; and the driving circuit is connected between the voltage-stabilized power supplies and the load to control the rotation speed of the motor in the load. By reducing the volume of an electronic switch and achieving a long low-speed travel, the disclosure enables the user to work at an accurate working point with an electronic device.

A system that improves on known systems for reducing output torque by a motor in the event of a jam may include an electromechanical actuator (EMA), a motor configured to drive the EMA and a controller. The controller may be coupled to the motor and configured to receive a speed of the EMA and a position of the EMA. The controller may be further configured to determine whether a jam of the EMA is imminent or is occurring according to the EMA speed, EMA position, and a known range of motion of the EMA, and to provide an input signal to the motor to reduce a torque of the motor if a jam of the EMA is imminent or is occurring.