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负载模拟器通常用于对飞行器的舵机在地面试验时进行人为模拟加载,它是一种被动式负载力电液伺服控制系统。图1是舵机加载系统原理图,图中的右半部分是被加载的舵机液压控制系统;左半部分由给定电位计、力函数发生器、电液伺服阀、液压缸及放大器等主要部分组成、其任务是根据舵机的运动状态(位移y,速度y和加速度y)按给定的力函数(通常是高次函数)对舵机控制系统进行加载,称谓负载模拟器。
Load simulator is usually used to simulate the loading of the aircraft’s steering gear during the ground test. It is a kind of passive load force electro-hydraulic servo control system. Figure 1 is a schematic diagram of the servo loading system, the right part of the figure is loaded hydraulic servo steering system; the left half by a given potentiometer, force function generator, electro-hydraulic servo valves, hydraulic cylinders and amplifiers, etc. Its main task is to load the steering gear control system according to the given force function (usually a high-order function) according to the movement state of the steering gear (displacement y, velocity y and acceleration y), and call the load simulator.