A special kind of real-time monitoring and control system for in-vehicle electric motor is presented.Signals from the Hall sensors not only act as electronic changing-over control sigal of the brushless DC motor

but also provide the basis for discovering and handling the abnormal behavior of the motor.For real-time in-vehicle communication

which is realized by FlexRay network

it contains a microcontroller MC9S12XF512 and two FlexRay transceivers TJA 1080A.The control command from the system and the abnormal phenomenon of the motor will determine the motor work status in different circumstances according to the abnormality handling algorithm

which is used for fault detection and treatment.The flow chart of this algorithm and the simulation curve is given

the feasibility of this algorithm is verified.