高频响比例阀非线性补偿控制策略  

Nonlinear Compensation Control Strategy of High-response Proportional Valve

作　　者：俞奇 陈立娟 魏立忠 李瑞阳 彭泽钦 陈文婷[3] 高伟 艾超[3] YU Qi;CHEN Li-juan;WEI Li-zhong;LI Rui-yang;PENG Ze-qing;CHEN Wen-ting;GAO Wei;AI Chao(School of Mechanical Engineering,Nanjing Institute of Technology,Nanjing,Jiangsu 211167;Jiangsu Jinling Intelligent Manufacturing Research Institute Co.,Ltd.,Nanjing,Jiangsu 211106;School of Mechanical Engineering,Yanshan University,Qinhuangdao,Hebei 066004)

机构地区：[1]南京工程学院机械工程学院,江苏南京211167 [2]江苏金陵智造研究院有限公司,江苏南京211106 [3]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《液压与气动》2022年第11期74-81,共8页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(51775476)。

摘　　要：为了解决单向电磁铁比例阀的非线性特性对系统位置控制精度和动态响应速度的问题,设计了不严格依赖于精确数学模型且具有较好控制精度的非线性补偿策略。基于系统的位置反馈偏差和偏差的变化率,提出了速度和加速度反馈的补偿思想,同时引入了前馈校正提高比例流量阀的跟踪精度。在AMESim仿真平台上验证了非线性补偿策略的有效性。结果表明:非线性补偿算法的引入,消除了比例阀存在的滞后性和不稳定性,提高了高频率下的响应速度和跟踪精度。In order to solve the problem that the nonlinear characteristic of the one-directional solenoid proportional valve affects the position control accuracy and dynamic response speed of the system,a nonlinear compensation strategy which does not strictly depend on the precise mathematical model and has better control accuracy is designed.Based on the position feedback deviation and the deviation rate of the system,the compensation idea of speed and acceleration feedback is proposed,and feedforward correction is introduced to improve the tracking accuracy.The effectiveness of the nonlinear compensation strategy is verified based on the AMESim simulation platform.The results show that the introduction of the nonlinear compensation algorithm eliminates the hysteresis and instability,and improves the response speed and tracking accuracy at high frequency.

关 键 词：高频响比例阀 液动力 摩擦力 电磁力 非线性补偿策略 

分 类 号：TH137[机械工程—机械制造及自动化] TP137[自动化与计算机技术—控制理论与控制工程]