High-precision small servo controller for electric steering gears

The invention discloses a high-precision small servo controller for electric steering gears. The device comprises a direct-current power supply, a power monitoring module, a serial bus transceiver, a temperature monitoring module, a single-chip microcomputer, an isolation driver, a three-phase inverter, a bus voltage monitoring module, a position sensor and a steering gear. According to the device, the single-chip microcomputer is used to receive data of the serial bus transceiver as a position instruction, send a control signal, and drive the three-phase inverter through isolation and power amplification of the isolation driver, thus controlling the steering gear. By using the high-performance single-chip microcomputer to detect the voltages of the power supply, a temperature sensor and a bus, fault protection is realized effectively. By using an isolation circuit to isolate a control circuit from a drive circuit, electromagnetic interference of the steering gear and the drive circuit to the control circuit