摘要
针对实现电动汽车自适应巡航控制系统优化问题,为提高自动识别控制车速,减少驾驶员的干预,建立整车动力学模型、逆动力学模型,设计基于滑模控制及前馈-反馈控制的自适应巡航控制系统上下两层控制器。通过对驱动电机输出扭矩及制动压力的协调控制,使车辆准确跟踪期望加速度。同时,为了保证系统切换的效率与协调性,构建了驱动控制与制动控制的切换曲线,并在制动控制中加入能量回收策略。通过Matlab/Simulink仿真结果表明,所建立的整车模型及控制策略能够实现电动汽车的自适应巡航功能,并且保证良好的控制效率及准确性。
In order to realize the adaptive cruise control system of electric vehicle, a vehicle dynamic model was constructed and an adaptive cruise control system with two-level structure was designed based on slide mode control theory and feedfoward-feedback control. Through the coordinate control of output torque of motor and brake pressure, the vehicle can follow the desired acceleration command accurately. A switch curve between drive-control and brake -control was designed to make the system switch more efficient and coordinate. An energy regenerate strategy was added in brake control. The simulation results of Matlab/Simulink show that the vehicle model and the control strate- gy can realize the adaptive cruise control with great control efficiency and accuracy.
出处
《计算机仿真》
CSCD
北大核心
2016年第1期171-176,213,共7页
Computer Simulation
基金
国际合作项目-中美清洁能源(2014DFG1590-101)
广西科学研究与技术开发计划(桂科重1348003-5)
长沙市科技计划项目(kl406097-31)资助
关键词
电动汽车
自适应巡航系统
动力学模型
制动能量回收
滑模控制
Electric vehicle
Adaptive cruise control
Dynamic model
Brake energy regenerate
Slide mode control
