The Technical Research On Hardware In Loop Simulation System Of Plug-in HEV Controllers

As the vehicle industry become the important pillar industry of drawing thedevelopment of global economy ahead, its rapid development has also broughtenergy crisis and environment pollution. To alleviate these problems, nations allover the world begin to push green and environmental technologies. Among themHEVs gradually turn into a hot spot of the automobile research area since theypossess all advantages of both the conventional vehicles and electric vehicles.This paper took a new type of plug-in hybrid electric bus as an example anddesigned the control model as well as did the hardware-in-loop simulationresearch on the vehicle controller. The paper employed a method that combinedthe theoretical modeling and experimental modeling based on the structure andworking principle of the plug-in HEV powertrain as well as each component’sparameters and performance characteristics under the circumstances ofMatlab/Simulink. What’s more, it built the real time simulation model of engine,electric machine, battery pack and AMT gearshift mechanism and modeled thevehicle powertrain using the popular modeling method at home andabroad—bond graph. In addition, Simulink simulation platform was utilized toverify the control strategy.The verification of HEV controller plays a crucial role in vehicle’sreliability and feasibility. This paper analyzed the HEV’s hardware and softwarecomposition, HEV structure and functions, principles of CAN bus network nodesdesign and communication protocols constitution. Based on dSPACE simulationplatform for vehicle on board controller to develop logic test tools, HIL testshave been carried out to joint software and hardware together and test datacommunication by utilizing processor and IO interface card in the simulationplatform. Meanwhile, Controldesk toolbox was taken advantage of to build upHIL monitoring interface in order to construct the HIL system.This paper also applied the built-up HIL test system to run HIL test forplug-in HEV buses. The simulation test shows that the built-up HIL system haspreferable real-time performance and the model has well test precision, whichproves that the HIL test system is feasible and effective.