Research On Powertrain Controller Of Hybrid Electric Vehicle Based On PowerPC

With the reducing of oil resource and the increasing of air pollution, people pay much attention to the development of Hybrid Electric Vehicle(HEV), that has the characteristics of high fuel efficiency, low emissions, long driving range, and affordable price. So that it is regarded as the most practical solution for energy conservation and environmental protection vehicles at present. The powertrain controller for HEV, which is the core unit for the power distribution, is the key point of HEV performance.The paper focuses on the design of powertrain controller of HEV, which is based on the Beijing University of Technology-Series Hybrid Electric Vehicle (BJUT-SHEV). By the hardware and software design of the powertrain control, the oil consume is reduced to the preseted performance of BJUT-SHEV.Firstly, the control strategy, which is based on the optimized route of Auxiliary Power Unit (APU) power out, is designed. And the strategy is tested in the Matlab/Simulink environment.Secondly, the hardware of BJUT-SHEV based on PowerPC is designed. And the hardware provide a safety and stably platform to the powertrain controller. Then, the embeded configurable opreating system(eCos) is transplanted to the PowerPC, in order to provide a real-time system.Thirdly, the control software is designed by the method of Top-down design. The software is divided into two parts. One is the strategy part, the other is the driver part. According to the design of these two parts, the function of vehicle control unit is achieved.Finaly, the hardware in loop simulation plantform, which is based on dSPACE, is established. The performance of the powertrain controller is tested in this experiment. The result of this test shows that the performance of powertrain controller achieve the preset performance. And the control strategy,which is based on the optimized route of APU power out, make a great progress than the original strategy.