[关键词]
[摘要]
针对电动公交车下长坡再生制动过程中被控对象存在汽车质量、汽车旋转质量换算系数不确定性以及电机参数摄动的问题,构建了电动公交车再生制动系统模型。基于线性矩阵不等式(LMI)设计了H∞鲁棒最优控制器,并在MATLAB/Simulink中进行了仿真。结果表明:采用H∞鲁棒最优控制比传统的车速电流双闭环PI控制具有更好的鲁棒稳定性,且回馈的能量提高了2%~3%。
[Key word]
[Abstract]
For the problems of the uncertainty of the vehicle mass and the conversion coefficient of the bus’ rotating mass, and the parameter perturbation of the motor during the regenerative braking process of the electric bus during long downhill running, the model of the electric bus regenerative braking system was constructed. The H∞ robust optimal controller was designed based on the linear matrix inequality (LMI), and simulated in MATLAB/Simulink. The simulation results showed that the H∞ robust optimal control had better robust stability than the traditional speedcurrent speedcurrent doubleclosedloop PI control, and the feedback energy was increased by 2%~3%.
[中图分类号]
U 469.72
[基金项目]
湖北省技术创新专项(重大项目)(2016AAA051)