摘要
为了克服不确定因素的影响,提出了一种基于直接自适应控制的鲁棒飞行控制系统设计方法,首先采用优化算法设计了补偿器以保证系统的正实性并且使得系统对模型不确定性具有鲁棒性,然后根据飞行品质的要求选择参考模型以实现良好跟踪,同时采用对误差的积分以加强控制系统的鲁棒性,接着利用李亚普诺夫稳定性定理证明了系统的渐近稳定性,最后应用某型飞机侧向控制系统进行仿真,结果显示所设计的飞行控制系统具有良好的自适应跟踪性能和鲁棒性能。
Aim. Refs. 2 and 3 by Itzhak dealt with the control system mentioned in the title using feedback compensator. This paper is different from Refs. 2 and 3 in that. （1） the design of our feedback compensator is different; （2） Refs. 2 and 3 did not consider external interference and perturbation. In the full paper, we explain our design in some detail; in this abstract, we just add some pertinent remarks to listing the three topics of explanation. The first topic is. the description of the robust flight control system. The second topic is. direct adaptive control. The third topic is. the design of the robust flight control system based on direct adaptive control. Its three subtopics are. the structure of the flight control system （subtopic 3.1）, the design of a feedback compensator （subtopic 3.2） and the proof of stability （subtopic 3.3）. In subtopic 3.1, Fig. 1 presents the structure of the flight control system, from which we can see that the design focus is to choose an appropriate feedback compensator and an adaptive gain matrix. In subtopic 3.2, we do two things： （1） we use eq. （10） in the full paper to design the feedback compensator so as to ensure that the flight control system is positive real; （2） we achieve the robustness of the modeling error. We also use the optimization algorithm to calculate the value of the feedback gain matrix. In control sys control of a that the de that its out subtopic 3.3, we apply the Lyapunov tem. Finally, we simulate the flight n si aircraft. The simulation gned flight control syste put can almost completely function to proving control system des results, shown in Fig. 3 and m is robust to parameter track the trajectory of the the a igned uncert the aint symptotical stability of the flight by us using the lateral motion full paper, indicate preliminarily y and external perturbation and reference model.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2008年第3期341-345,共5页
Journal of Northwestern Polytechnical University
关键词
飞行控制
直接自适应控制
鲁棒
flight control systems, robustness （control systems）, direct adaptive control, feedbackcompensator
