【摘 要】
：
Range-extender electric vehicle(RE-EV)is a new type of new energy vehicle which fills the gap between the conventional internal-combustion engine vehicle and the electric vehicle.Electric Chassis Inte
【机 构】
：
State Key Laboratory of Automobile Dynamic Simulation,Jilin University,Changchun 130025,China
论文部分内容阅读
Range-extender electric vehicle(RE-EV)is a new type of new energy vehicle which fills the gap between the conventional internal-combustion engine vehicle and the electric vehicle.Electric Chassis Integrated Power Steering System(ECIPS)system,as a important parts of Electric Chassis Integrated System(ECIS),is one of the key parts of electric vehicle in their design and assembly.ECIPS system was not only a complex nonlinear dynamic system with uncertainty,unmodeled dynamics,measurement noise and interference,but a hybrid system including both discrete event and continuous dynamics.The structure,control function and dynamic behavior of ECIPS system was analyzed.Based on its input/output functions,operating conditions and implementation process of control strategy,the implement model structure reflecting both the discrete and continuous dynamic behavior of ECIPS hybrid system was established.The switching-control of ECIPS hybrid system and its stateflow was established.The pylon course slalom test was executed under 25km/h and 45 km/h speed condition respectively.The results show that the peak vaule and standard deviation of steering torque were reduced by 41.68%and 41.79%respectively when 25km/h speed,and by 30.92%and 30.67%respectively when 45km/h speed,the steering portability is improved obviously.ECIPS hybrid control system and its hybrid structure could fully describe the dynamic behavior and operating characteristics of ECIPS system,reflecting not only the continuous dynamic behavior,but the influence of discrete dynamic behavior on its operation,monitoring,security and liability.It was of theoretical significance and engineering application prospect to the Electric Chassis Integrated System for improving control performance,intelligent level and making the system more approachable to users.
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