基于T-S模糊模型的转台鲁棒最优控制器设计

针对飞行器仿真转台系统的非线性以及不确定性问题,提出了基于T-S模糊模型的鲁棒最优控制器设计方法.首先,利用IF-THEN模糊规则将转台速度环系统的状态空间分成不同的区域,构建具有参数不确定性的T-S模糊模型;然后,根据给定的最优性能指标要求以及控制输入约束,通过求解一组线性矩阵不等式(LMIs)进行鲁棒最优控制嚣设计.仿真结果表明,该方法不仅具有比较好的控制效果,而且能有效地解决控制输入约束问题,并能很好地保证对参数变化的鲁棒稳定性.

Robust-optimal Control of Turntable System Based on T-S Fuzzy Model

A robust-optimal controller design method is proposed based on T-S fuzzy model to deal with the nonlinear and uncertainty problems on the flight simulation turntable system.The state space of turntable velocity loop system is divided into different regions by fuzzy IF-THEN rules,then T-S fuzzy model with parametric uncertainties is constructed.According to the optimal performance and constraint on the control input presented,robust-optimal controller is designed by solving a set of linear matrix inequalities(LMIs).Finally,simulation results show that the method not only have well control effectiveness,but also can deal with the problem of constraint on the control input,and guarantee the robust stability for parameter changed.