基于LMI的鲁棒H_2/H_∞控制在飞行控制中的应用

Application of Mixed H_2/H_∞ Robust Control Based LMI in Flight Control

相比 H_∞控制和 H_2控制,H_2/H_∞混合控制对系统的稳定性和动态性能进行折衷,对参数摄动系统的多目标控制问题是一个很好的选择。多目标控制问题又可以转化为具有 LMI 约束的凸优化问题来求解控制器。针对某飞行器横向飞行控制系统的参数摄动问题,基于 LMI 设计了 H_2/H_∞混合控制器。仿真结果表明所采用的方法是有效的。

Compares with H_∞ control and H_2 control,mixed H_2/H_∞ control make a tradeoff between stability and dynamic performance.It's a good choice for multi-objective control problem with parameter perturbations.The problem can be translat- ed into convex optimization problem over LMIs.This paper designs a mixed H_2/H_∞ robust controller based on LMI for lateral flight control system subject to parameter perturbations.Simulation shows the method is effective.