摘要
基于E-Booster集成式电子液压制动(I-EHB)系统,研究其制动主缸液压力跟随特性。从制动系统PV特性(液压力-齿条行程特性关系)出发,采用双闭环模糊PID控制算法。通过对系统方案及控制策略分析,设计控制单元,并搭建试验台架对控制算法进行验证。结果表明:在环境条件及系统参数不变的前提下,相较于单闭环控制算法,双闭环模糊PID控制算法下的制动主缸液压力在阶跃试验中有更快的建压响应,其0~50 bar的建压最短响应时间可达32 ms,较单闭环控制快34 ms,最大液压力控制精度提升了2.58%,验证了算法的可行性,为接下来进一步研究系统鲁棒性提供了一定的理论基础。
Based on E-Booster named Integrated Electro-Hydraulic Brake(I-EHB)system,the following characteristics of main cylinder hydraulic pressure were researched.Based on the PV characteristic(hydraulic pressure-rack travel characteristic)of braking system,a double closed-loop fuzzy PID control algorithm was proposed.Through the analysis of the system scheme and control strategy,the control unit was designed,and the test bench was built to verify the control algorithm.The results show that,compared with the single closed-loop control algorithm,the main cylinder hydraulic pressure of double closed-loop fuzzy PID control algorithm has a faster pressure response in step tests under the same environmental conditions and system parameters.The shortest response time of 0~50 bar is 32 ms,which is 34 ms faster than that of single closed-loop control,and the maximum accuracy of hydraulic pressure control is improved by 2.58%,which verifies the feasibility of the algorithm,and provides a theoretical basis for further research on system robustness.
作者
伍星星
张彦会
杨昭辉
陆文祺
左红明
Wu Xingxing;Zhang Yanhui;Yang Zhaohui;Lu Wenqi;Zuo Hongming(School of Mechanical and Transportation Engineering,Guangxi University of Science and Technology,Liuzhou 545006,Guangxi,China;Lianchuang Automotive Electronics Co.,Ltd.,Shanghai 201806,China)
出处
《现代制造工程》
CSCD
北大核心
2019年第11期50-55,共6页
Modern Manufacturing Engineering
基金
广西新能源物流商用车协同创新研发及成果转化应用资助项目(2018AA18028Y)
