Abstract: A motor drive system comprises: a motor; first and second power sources; a first electronic control unit connected with the first power source, connected with the motor to control the motor, and comprising a first inverter, a first driver configured to drive the first inverter, and a first microcontroller configured to control the first drive; a second electronic control unit connected with the second power source, connected with the motor to control the motor, and comprising a second inverter, a second driver configured to drive the second inverter, and a second microcontroller configured to control the second driver; and a third electronic control unit connected with the first and second power sources, connected with the motor to control the motor, and comprising third and fourth inverters, third and fourth drivers configured to drive the third and fourth inverters, respectively, and a third microcontroller configured to control the third and fourth drivers.

Abstract: A method for implementing program execution integrity (PEI) for a communication-based sensor includes receiving an output communication message from the sensor, the output communication message including sensor output data internally processed within the sensor. The output communication message further includes raw data used by the sensor in internally processing the sensor output data. The raw data is independently processed, and the results thereof are compared with the internally processed sensor output data so as to verify the processing integrity of the sensor to a desired tolerance.