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为研究加载结构对摩擦加载式电液负载模拟器力矩加载性能的影响,介绍该负载模拟器的加载原理,搭建单向摩擦加载式电液负载模拟器实验样机.建立该负载模拟器的线性数学模型;设计PID+前馈的控制器,在提高控制精度同时避免引入多余力矩抑制补偿;实验研究弹簧刚度、摩擦盘摩擦性能等对力矩加载性能的影响;着重研究该负载模拟器在强舵机干扰条件下的小幅值力矩加载性能.实验结果表明:摩擦加载式力矩加载方法在结构上不存在多余力矩,能够获得高性能的力矩加载结果.优化弹簧刚度,选用摩擦性能优良的摩擦盘材料,以及设计高性能的控制器均可以提高力矩加载性能.
In order to study the influence of loading structure on the moment loading performance of friction-loaded electro-hydraulic load simulator, the load principle of the load simulator is introduced, and the experimental prototype of the one-way friction-loaded electro-hydraulic load simulator is built.Linear mathematics Model; PID + feedforward controller design, to improve the control accuracy while avoiding the introduction of extra torque suppression compensation; experimental study of spring stiffness, friction disk friction performance on the torque loading performance; focus on the load simulator in the strong steering gear interference Under the conditions of small amplitude moment loading performance.The experimental results show that: friction load moment loading method does not exist in the structure of extra torque, to obtain high-performance torque load results.Optimize the spring stiffness, the use of friction material excellent friction disc material, As well as design of high-performance controller can improve the torque load performance.