摘要
针对电动汽车的电机-变速器集成驱动系统,提出了一种线性二次型调节器结合观测器的电机控制方案,以抑制系统的扭转振动。以电机机械角速度、车轮角速度和扭转角作为系统状态变量建立了状态方程,并分析了系统的振动特性。仿真结果表明,观测器能够有效地估计状态变量,线性二次型调节器的采用使系统的振动得到了更好的抑制,提高了车辆的换挡质量和行驶性能。
A motor control scheme consisting of linear quadratic regulator （LQR） and state observer is proposed for the motor-transmission integrated drive system of electric vehicle to suppress the torsional vibration of the system. The state equation is set up with mechanical angular velocity, wheel angular velocitg and torsion angle as the state variables of the system and the vibration characteristics of the system are analyzed. The results of simulation show that the observer can effectively estimate state variables and the use of LQR can better suppress the vibration of system, enhancing the shift quality and driving performance of vehicle.
出处
《汽车工程》
EI
CSCD
北大核心
2010年第7期596-600,595,共6页
Automotive Engineering
