Controller for an electric motor, and a method thereof

摘要

A controller for an electric vehicle having an electric motor is provided. The controller includes a motor control processor (MCP) module configured to control torque output of the electric motor. The controller also includes a first main processor monitor (MPM) module and a second MPM module. The first MPM module and the second MPM module are configured to separately determine a state of health of the MCP module, and to generate a first fault signal and a second fault signal, respectively, after determining the MCP module is not functional. The controller further includes a voting control module configured to receive at least one of the first fault signal from the first MPM module, and the second fault signal from the second MPM module, and to generate an override command when it receives both the first fault signal and the second fault signal. The override command overrides the MCP module.

主权项

1. A controller for an electric vehicle having an electric motor, the controller comprising:
a motor control processor (MCP) module configured to generate at least one motor command to control torque output of the electric motor; a first main processor monitor (MPM) module configured to determine a state of health of the MCP module, and to generate a first fault signal if the first MPM module determines that the MCP module is not functional; a second MPM module configured to determine the state of health of the MCP module, and to generate a second fault signal if the second MPM module determines that the MCP module is not functional; a voting control module configured to receive at least one of the first fault signal from the first MPM module and the second fault signal from the second MPM module, and to generate an override command if the voting control module receives both the first fault signal and the second fault signal, wherein the second fault signal is a shutdown command for shutting down the electric motor, and the shutdown command is based upon a motor speed of the electric motor; and an override control module configured to receive the override command from the voting control module, and to execute the override command; wherein the override command overrides the MCP module.