可重构飞控系统的鲁棒控制研究

New Robust Control Law for Reconfigurable Flight Control System

在飞控系统发生故障时，利用可重构飞控系统实现故障重构。本文将低、高增益反馈控制方法和分段线性控制技术相结合，提出一种新的可重构飞控系统鲁棒控制结构，通过对反馈控制律设计，同时考虑操纵面偏转速率饱和限制，从而设计出一种鲁棒重构控制系统。计算结果表明：该方法能有效地完成飞控系统故障重构。

Abstract: Although laws of robust control for reconfigurable flight control system exist, to our best knowledge, there does not exist a law that combines feedback control with piecewise linear control. Sections 2 and 3 give respectively all the important details about piecewise linear control and feedback, including low-gain and high-gain, that we need for combining them into a new robust control law. In this way, we can overcome two disadvantages inevitable when only peicewise linear control alone or feedback control alone is utilized. The two disadavntages are; (1) lack of robustness when only piecewise linear control is used; (2) low convergence rate when only feedback is used. We give a numerical example. The calculated simulation results, as shown in Figs. 2 through 4, show preliminarily that our new robust control law is feasible.