LQG／LTR法在综合飞行／推进控制系统中的应用

以具有推力矢量控制的纵向着陆状态的战斗机为研究对象．应用ＬＱＧ／ＬＴＲ（ＬｉｎｅａｒＱｕａｄｒａｔｉｃＧａｕｓｓｉａｎ／ＬｏｏｐＴｒａｎｓｆｅｒＲｅｃｏｖｅｒｙ）法设计综合飞行／推进控制ＩＦＰＣ（ＩｎｔｅｇｒａｔｅｄＦｌｉｇｈｔ／ＰｒｏｐｕｌｓｉｏｎＣｏｎｔｒｏｌ）系统的集中补偿器，设计结果表明：系统具有良好的鲁棒性和解耦性。

An Improved LQG/LTR Method for Raising Robustness of Chinese Integrated Flight/Propulsion Control System

The robustness of an integrated meht/propulsion control system is believed to have been partially solve in advanced countries. China also needs to solved this problem.. In the absence of detailed reports on this subject in the open literature, we believe we are the first in China to take a first step towards its solution.Our first step is the proposal of an improved LoG/LTR method. It is free from the shortcoming pointed out by Doyle and Stein 1]: even though both optical state- feedbackregulator and Kalman filter possess good robustness individually, when combining them becomes necessary in some cases, robustness becomes unsatisfactory.Our improvement is the finding of a way to recover robustness, i. e. to mare the robustness of the combined system to be quite close to that of Kalman filter alone. Fig. 3 (Kaiman filter) and Fig. 4 (combined system) give the degree of recovery for an integrated flight/propulsion control system. For such a quite satisfactory recovery, Fig. 7 shows that all four controls are still within allowable limits.