基于Super-twisting观测器的制动缸自适应鲁棒控制  

Adaptive Robust Control of Brake Cylinder based on Super Twisting Observer

作　　者：崔晶[1] 刘芳璇[2] 张省伟[2] 侯艳[2] Cui Jing;Liu Fangxuan;Zhang Shengwei;Hou Yan(Xi'an Railway Vocational and Technical Institute,Xi'an,Shaanxi 710026,China)

机构地区：[1]西安铁路职业技术学院牵引动力学院铁道机车教研室,陕西西安710026 [2]西安铁路职业技术学院,陕西西安710026

出　　处：《西安轨道交通职业教育研究》2021年第2期1-4,9,共5页Xi'an Rail Transit Vocational Education Research

摘　　要：针对实际工况中轮对踏面径向形变挤压机车制动缸活塞及闸瓦产生的时变扰动,设计Super-twisting观测器对其实际值进行估计并对估计误差自适应模糊逼近以削弱时变扰动。构造基于微分控制律的自适应鲁棒控制器,将其应用于制动缸闸瓦位置控制系统。理论分析及仿真结果表明,系统闭环各状态变量输出有界,滑模面导数收敛于0而滑模面常值收敛。In view of the time-varying disturbance caused by the radial deformation of wheelset tread extruding the piston and brake shoe of locomotive brake cylinder in actual working conditions,a super twisting observer is designed to estimate the actual value,and the estimation error is adaptively fuzzy approximated to weaken the time-varying disturbance.An adaptive robust controller based on differential control law is constructed and applied to the brake shoe position control system of brake cylinder.Theoretical analysis and simulation results show that the output of each state variable in the closed-loop system is bounded,the derivative of the sliding surface converges to 0 and the constant value of the sliding surface converges.

关 键 词：机车制动缸 Super-twisting观测器 自适应模糊逼近 微分控制律 自适应鲁棒控制 

分 类 号：TN341[电子电信—物理电子学]