结构模态耦合问题在民机电传控制律设计中的考虑

Considerations on Structural Modal Coupling in FBW Control Law Design of Civil Aircrafts

结构模态耦合是民用飞机电传控制律设计必须解决的问题之一。综合分析国外民用飞机先进技术状况,研究给出结构陷波器与结构模态抑制的设计方法以及设计过程需要考虑的问题,并通过算例飞机验证该方法的可行性,最后简要阐述了地面试验验证的方法与原理。

Structural modal coupling is one of the problems which must be solved in FBW （Fly-By-Wire） control law design. Firstly, the advanced technologies of foreign civil aircrafts are analyzed. Then, the design methods of structural notch filter and structural modal suppression and the issues that should be taken into consideration in the design are researched. The feasibility of the method is verified by using an example aircraft. Finally, the principles and methods of ground tests are described briefly.