高超声速机的固定阶鲁棒控制器的设计

Fixed Order Robust Control Design for Hypersonic Vehicles

在采用现代控制理论设计方法对高超声速飞行器的控制系统的设计中,一般会生成高阶的控制器,而当对这些控制器予以实现的时候又会产生较大的不可接受的时间延迟。本文针对这个问题,应用了一种在控制器设计之前即限制控制器维数的方法来设计固定阶的H∞控制器,同时采用了一种控制器的规范实现以及同伦算法。最后,本文还设计了一种固定阶的μ控制器,它与全阶补偿器具有相似鲁棒性,但却显著地降低了控制器的复杂度。

Control system design for hypersonic vehicles using modem control theory techniques generally leads to high order controllers. The time delays which are created when these controllers are implemented may not be acceptable. A technique to constrain controller dimension a priori in the design process em- ploying a controller canonical realization and a homotopy algorithm is used to design fixed order H∞ controllers. At last, A fixed order μ controller is designed exhibiting similar robustness properties as a full order compensator while considerably reducing controller complexity.