Method for controlling electric power steering system during emergency power-off

The invention discloses a method for controlling an electric power steering system during emergency power-off, which is characterized in that in the running process of an electric automobile, an emergency high-voltage working condition is reflected as emergency high-voltage mode activation, at the moment, a motor stops power output, the state of the automobile is switched to neutral gear sliding, and a driver makes a next instruction. The high-pressure working condition accidentally shows that the VCUready signal is invalid or the VCU signal verification is wrong, at the moment, the motor stops power output, and corresponding electric steering makes the following responses: the EPS system is normal, the vehicle speed is greater than or equal to V1, the VCUready signal is valid, and the VCU signal verification is correct; if the EPS system is normal, the vehicle speed is greater than or equal to V1, the VCUready signal is invalid or the VCU signal verification is wrong; the EPS system is normal, and the vehicl