Study on Friction Torque Loading with an Electro-hydraulic Load Simulator  

作　　者：Shang Yaoxing Jiao Zongxia Wang Xiaodong Zhao Sijun 

机构地区：[1]School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

出　　处：《Chinese Journal of Aeronautics》2009年第6期691-699,共9页中国航空学报（英文版）

基　　金：National Natural Science Foundation of China （50825502）

摘　　要：This article, in order to precisely impose friction on aircraft and weapon actuation systems, presents a new friction loading method characteristic of ＂torque-zero velocity＂ switching control with an electro-hydraulic load simulator. As the general Stribeck friction model has little related to static friction, it proposes a ＂torque-zero velocity＂ switcher, in which a zero-velocity controller is developed to load the static friction and a torque controller the kinetic friction. With the help of mathematical modeling, this article designs a ＂torque-zero velocity＂ switching controller and, correspondingly, provides a ＂dual-threshold judgment＂ algorithm. Simulation results indicate that the proposed method can be successfully used to carry out the static and kinetic friction simulation with an electro-hydraulic load simulator.This article, in order to precisely impose friction on aircraft and weapon actuation systems, presents a new friction loading method characteristic of ＂torque-zero velocity＂ switching control with an electro-hydraulic load simulator. As the general Stribeck friction model has little related to static friction, it proposes a ＂torque-zero velocity＂ switcher, in which a zero-velocity controller is developed to load the static friction and a torque controller the kinetic friction. With the help of mathematical modeling, this article designs a ＂torque-zero velocity＂ switching controller and, correspondingly, provides a ＂dual-threshold judgment＂ algorithm. Simulation results indicate that the proposed method can be successfully used to carry out the static and kinetic friction simulation with an electro-hydraulic load simulator.

关 键 词：FRICTION electro-hydraulic load simulator friction torque loading torque-zero velocity switching control servo mechanism actuator 

分 类 号：TP271.31[自动化与计算机技术—检测技术与自动化装置] U463.212[自动化与计算机技术—控制科学与工程]