Motor control system and motor control device

An electric motor control apparatus, comprising an electric motor control system, wherein the electric motor control device comprises:

• a master control module, a drive module, and a monitoring module, wherein the master control module is configured to output a low-voltage drive signal to the drive module, the drive module converts the low-voltage drive signal into a high-voltage drive signal and outputs the high-voltage drive signal to a power unit, the power unit outputs, according to the high-voltage drive signal, a power supply drive signal provided by a high-voltage battery, and the power supply drive signal is configured to drive a motor connected with the power unit to rotate;
• and the monitoring module is electrically connected with the master control module and the drive module, and is configured to acquire the low-voltage drive signal, and output a fault signal to the master control module when the low-voltage drive signal is abnormal, to control the master control module to stop outputting the low-voltage drive signal, wherein the monitoring module comprises an auxiliary power supply, and the auxiliary power supply is independent of the master control module and provides a working power supply for the monitoring module, wherein the monitoring module further comprises a safety logic unit and a monitoring unit;
• the safety logic unit is electrically connected with the drive module, and is configured to output a third disable signal to the drive module when receiving the fault signal, to control the drive module to be electrically cut off, and the drive module comprises a first drive unit and a second drive unit, and is configured to start according to an enable signal of a first level outputted by the master control module, convert the low-voltage drive signal into a high-voltage drive signal, and output the high-voltage drive signal to the power unit;
• and the monitoring unit is electrically connected with the safety logic unit and a control unit, and is configured to receive a motor control signal outputted by the control unit, and output a second disable signal to the master control module when the monitoring unit determines that the motor control signal is abnormal, to control the master control module to stop outputting the low-voltage drive signal.