基于对角占优的航空发动机多变量控制

A multivariable control based on diagonal dominance for aeroengine

提出了以对角占优为基础,结合线性矩阵不等式进行航空发动机多变量控制系统频域预补偿器的设计。该方法通过使用有界实引理,将多变量频域预补偿器的设计问题与线性矩阵不等式的求解方法相结合,以达到削弱航空发动机多变量控制系统强耦合的目的。仿真验证表明,该方法有效地削弱了通道间的耦合,降低了控制器的阶次。

A design method for pre-compensator in frequency domain of aeroengine muhivariable control system based on diagonal dominance and the method of linear matrix inequalities （LMI） is presented. The conception of LMI and the design in frequency domain of diagonal dominance achieving pre-compensator are connected by bounded real lemma （BRL） , and this method is aimed at reducing the effects of interactions in aeroengine multivariable systems. The improvement in reducing the interactions and the order of the controller is verified by simulation.