不确定系统非脆弱H_∞控制与仿真

Robust Non-fragile H_∞ Control and Simulation of Aircraft Lengthways System

应用线形矩阵不等式方法,考虑控制器实现过程中的摄动问题,对有干扰情况下飞机纵向不确定系统的非脆弱控制器设计问题进行了研究;并将控制器设计问题转化为具有线性矩阵不等式约束的凸优化问题。通过求解一个线性矩阵不等式,即可得到该问题的一个可行解,简化了求解过程。最后将该控制器设计方法应用于某飞控系统进行非脆弱对比仿真。结果表明:所提出的控制器不仅满足控制系统性能要求,同时具有抗参数变化和干扰抑制能力。

Applied the linear matrix inequalities method, and considering the variations of the controller gains, the design problem of robust no-fragile H∞ state feedback controller for uncertain aircraft lengthways system is studied and transformed as LMI problems. A feasible answer via solving a linear matrix inequality can get easily, then apply the method to an aircraft control system for no-fragile contrast simulation. The result testifies the controller satisfy the design performance requisition, and also have the ability of resisting parameter varying and repress disturbance.