Research on Testing Method of Fault Injection for Motor Controller

Abstract

Abstract According to the ISO 26262 standard, the fault injection test in the R&D verification stage can clearly show the stability or safety response ability of the Unit Under Test in the face of various faults or extreme conditions. This paper introduces the safety state mode of the motor drive system for electric vehicles, analyzes the possible fault forms of the Motor Controller Unit, builds a power hardware-in-the-loop test platform and carries out fault injection test by taking the motor rotation fault as an example. The results show that the fault injection test method proposed in this paper is an effective means to verify the functional safety of the electric drive system.