基于实时小波去噪方法的EPS电流跟踪控制  

EPS Current Tracking Control Based on Real-time Wavelet De-noising

作　　者：赵万忠[1] 施国标[1] 林逸[1] 申荣卫[1] 

机构地区：[1]北京理工大学机械与车辆工程学院,北京100081

出　　处：《汽车工程》2008年第3期227-230,共4页Automotive Engineering

基　　金：国家863高新技术项目(2006AA11A192);国家自然科学基金(50705008)资助

摘　　要：为实现对电动助力转向系统(EPS)助力电机电流的准确跟踪控制,以纯电动大客车EPS为研究对象,结合模糊自适应整定PID和实时小波去噪方法,设计了基于实时小波去噪算法的新型模糊自适应整定PID助力电机电流跟踪控制器。仿真试验表明:这种新型控制器能够实现助力电机输出电流对目标电流的准确跟踪,提高了系统的抗干扰能力和鲁棒性;同时有效地抑制电流信号中的噪声,能减小直流电机的转矩波动和转向盘抖动,改善驾驶员手感。Based on adaptive fuzzy PID and real-time wavelet de-noising technique, a new type of adaptive fuzzy PID controller for assistant motor current tracking is designed. The results of simulation show that the controller can realize accurate tracking of assistant motor current toward objective current for electric power steering system with high anti-jamming ability and robustness, and effectively eliminate the noise in current signals, reduce the torque fluctuation of DC motor and the jitter of steering wheel, so improving the hand feel of drivers.

关 键 词：电动助力转向 跟踪 模糊自适应PID 实时小波去噪 

分 类 号：U463.4[机械工程—车辆工程]