飞行模拟转台非线性干扰观测器反步滑模控制器设计

Backstepping Sliding Mode Controller Based on Non-linear Disturbance Observer for Flight Simulator Servo Systems

摘要:

本文针对考虑不确定性的飞行模拟转台伺服系统,提出了一种基于非线性干扰观测器的反步全局滑模补偿控制方法。该方法采用反步控制方法设计转速期望虚拟控制,然后利用非线性干扰观测器观测系统不确定干扰,进而对引入非线性干扰观测器的系统设计自适应全局滑模控制器,实现了飞行模拟转台伺服系统期望转角信号的鲁棒跟踪控制,仿真结果表明,该方法控制效果良好,具有很好的工程应用价值。

Abstract:

In this paper, a method of back stepping sliding mode controller based on non-linear disturbance observer is proposed for the flight simulator servo systems considering the uncertainty. In this method, back stepping control is used to design virtual control desired speed, then nonlinear disturbance observer is used to observe the uncertain disturbance of system, and then adaptive global sliding mode controller is designed for the system using nonlinear disturbance observer, which can achieve the robust tracking control of desired angle signal of flight simulator servo systems. Simulation results have shown that the method has a good performance on control effect and is valuable on engineering application.