应用数学和力学2017，Vol.38Issue(3)：321-332,12.DOI:10.21656/1000-0887.370185
基于复合控制的电液负载模拟器多余力抑制研究
Elimination of Surplus Forces in Electrohydraulic Load Simulators Based on Compound Control
摘要
Abstract
In order to restrain the surplus force caused by position disturbance in the aircraft rudder electrohydraulic load simulator and improve accuracy of the loading system,the mathematical model for each part and the whole system was established.Through the analysis of the mathematical model,the generation mechanism for the surplus force was expounded,and the transfer function for the surplus force was established.A compound control method was proposed which combined PID and feedforward compensation.The numerical simulation and the experimental study were carried out based on the proposed method.The results of simulation and experiment show that,the feedforward PID compound control can effectively restrain the system's surplus force,so as to improve the loading accuracy of the electrohydraulic load simulation system.At the same time,the experimental results show that the surplus force hits a mutation when the system changes the direction of movement,which points out the direction for further research.关键词
电液负载模拟器/数学模型/多余力/前馈PID复合控制Key words
electrohydraulic load simulator/mathematical model/surplus force/feedforward PID compound control分类
航空航天引用本文复制引用
艾志久,王云瑞,舒建华,刘旭,陈瑞,吴定定..基于复合控制的电液负载模拟器多余力抑制研究[J].应用数学和力学,2017,38(3):321-332,12.基金项目
国家自然科学基金(51074202)The National Natural Science Foundation of China(51074202) （51074202）
