动态输出反馈系统不确定项容忍区间分析

Tolerance Interval Analysis of System Uncertainty for Dynamic Output Feedback

针对线性定常系统的动态输出反馈圆盘区域极点配置问题,提出了线性系统各参数单一偏差容忍区间的概念;通过对控制系统参数偏差对系统性能影响的分析,利用系统单一偏差模型给出了基于动态输出反馈圆盘区域下系统不确定项容忍区间的设计算法;加之,比较系统各不确定项的容忍区间的大小,明确了线性系统参数波动对该系统性能的影响程度。系统设计者可以参考其影响程度设计优质的控制系统。最后,一个飞机垂直翼的仿真实例证明了结论的科学性和有效性。

Considering linear time-invariable systems, based on the problem of pole assignment for the disk region of dynamic output feedback, we gave the concept of tolerance interval of single deviation model with uncertain parameters for control system. Through the analysis of the influence on the performance of the system by uncertain parameters fluctuation of linear time-invariable systems, we gave the algorithm of uncertain parameters tolerance interval in disk region by single deviation model of the system. Furthermore, by comparing the size of tolerance intervals for various uncertain parameters, we determine the level of influence on the performance of systems. The system designer can design a high quality control system by referring to the level of its influence. Finally, a vertical wing of an aircraft example is given to illustrate scientificalness and effectiveness of the conclusion.