18932003. SAFETY STATUS MONITORING SYSTEM AND METHOD FOR MOTOR DRIVE CONTROL SYSTEM (ZF Friedrichshafen AG)

SAFETY STATUS MONITORING SYSTEM AND METHOD FOR MOTOR DRIVE CONTROL SYSTEM

Organization Name

ZF Friedrichshafen AG

Inventor(s)

Haobo Jiang of Shanghai CN

Chang Han of Shanghai CN

Yang Xu of Shanghai CN

SAFETY STATUS MONITORING SYSTEM AND METHOD FOR MOTOR DRIVE CONTROL SYSTEM

This abstract first appeared for US patent application 18932003 titled 'SAFETY STATUS MONITORING SYSTEM AND METHOD FOR MOTOR DRIVE CONTROL SYSTEM

Original Abstract Submitted

A safety status monitoring system and method includes a master control chip to issue a master control chip hardware failure signal; a power management chip; a bus voltage comparator; a three-phase bridge switching circuit; a safety control logic generator to generate a hardware failure mode enable signal and a hardware failure status control signal based on the master control chip hardware failure signal, safety status entry and safety status switching signals; a gate driver to generate gate drive signals based on the hardware failure mode enable signal and the hardware failure status control signal to perform on/off operations on power transistors in the three-phase bridge switching circuit; and a drive safety status monitor to generate a drive safety status feedback control signal based on the hardware failure mode enable signal, the hardware failure status control signal, a gate driver failure status signal, and a power transistor working status signal.