操纵品质的鲁棒飞控系统设计

 利用对误差函数加权的最优控制,提出了具有固定增益的鲁棒飞行控制系统的设计方法。用该方法设计的控制系统不仅具有稳定的鲁棒性,而且具有操纵品质的鲁棒性。本文研究了该鲁棒飞行控制系统在全飞行包线内的稳定性,还对某歼击机设计了鲁棒飞行控制系统。设计和仿真表明了该方法的简便性和有效性。

DESIGN OF FLIGHT CONTROL SYSTEMS WITH ROBUSTNESS PROPERTY OF HANDLING QUALITY

It this paper the optimal quadratic regulator design method is used to design the flight control systems with the robustness properties of stability and handling quality. The weighting matrix Q is successively modified to assign the close loop system poles in a desirable region at different flight conditions resulting in a simultaneously stable flight control system under different flight conditions. Then a weighting error function which is the difference between the states of a nominal system and the systems corresponding to different flight conditions is used to minimize the difference between the performances of the nominal system and the systems of various flight conditions.Such a designed flight control system has the robustness properties of stability and handling quality. The stability in whole flight envelope is proved. An example of a fighter control system is illustrated and it shows the simplicity and efficiency of the design procedure.