某旋翼加载系统分析

在进行某旋翼加载系统试验时,核心是减小多余力影响问题。文中分析了两种方法,前馈补偿和基于结构不变性原理补偿方法。前馈控制通过测量位置系统的伺服阀位移,该位移是位置干扰的函数,补偿多余力影响包括补偿伺服阀死去非线性影响。基于不变性原理补偿是实际应用中通过测量位置系统的速度,在位置系统输出和加载系统输入之间加入的补偿通道。该文研究某旋翼加载系统的多余力动态补偿及其有效性,仿真显示了补偿效果和两种方法的对比。仿真结果表明, 两种方法都有很好的多余力消除效果,可根据实际情况进行选择。

Analysis of the Rotor Loading System

The aim of this paper is to suppress the extra torque in rotor loading system which is essential to experiment. This paper presents two compensation methods for achieveing high-precision force loading control under the motion of the rotor, namely the feedforward control and the structure-invariable principle control. Feedforward control is successfully implemented in loading system by measuring the open of servo value of position system which is a function of position disturbance. The extra force is eliminated as the dead no-linear effect through Feedforward. The structure-invariable principle is another method for eliminating extra force in application, whose velocity of disturbance position is measured and fed through approximate transform between output of position system and input of loading system. Two compensation dynamic models in rotor loading system are studied to evaluate the validation. Simulation results are included to demonstrate the effects and comparison of compensation control , and show that both methods are available in application.