摘要
为提升汽车四轮转向系统的操纵性能,该研究通过比例前馈和模糊PID反馈控制进行后轮主动转向控制。以横摆角速度偏差及变化率作为模糊控制器输入,经过模糊推理输出PID控制器3个参数,控制器的量化因子和比例因子采用经验法得到。在Matlab/Simulink中进行操纵稳定性指标对比仿真实验,结果表明,模糊PID控制器时的转向系统3个指标的动态性能优于PID控制器和二轮转向时的动态性能,且一定程度上超过理想比例控制的效果。可见文章采用的四轮转向控制策略是有效的。
In order to improve the control performance of the automobile four-wheel steering system, proportional feed- forward and fuzzy PID feedback control are used to contM the rear wheel active steering. The yaw rate deviation and the rate of change are taken as the input of the fuzzy controller, and the three parameters of the PID controller are output by fuzzy inference. The quantization factor and proportion factor of the controller are obtained by empirical method. The simulation experiments of handling and stability indexes are carried out in Matlab/Simulink. The results show that the dynamic performances of the three indexes of the steering system with fuzzy PID controller are better than those with PID controller and two-wheel steering, and to a certain extent, they exceed the effect of the ideal proportional control. It can be seen that the four-wheel steering control strategy adopted in this paper is effective.
作者
陈益新
陈炎冬
华逸人
Chen Yixin;Chen Yandong;Hua Yiren(Institute of Electrical and Mechanical Engineering,Taihu University of Wuxi,Wuxi 214064,China)
出处
《江苏科技信息》
2018年第27期34-37,共4页
Jiangsu Science and Technology Information
基金
江苏省大学生创新创业项目
项目编号:201713571010Y
江苏省高校自然科学研究项目
项目编号:18KJD460006
关键词
模糊PID控制
四轮转向系统
前馈与反馈控制仿真
fuzzy PID control
four-wheel steering system
feedfoi^ard and feedback control simulation
