基于区间系统的鲁棒H_∞飞行控制系统设计  

Robust H_∞ Controller Design Using Interval System Models

作　　者：韩旭[1] 侯明善[2] 姚成法[1] 

机构地区：[1]西北工业大学航空学院,西安710072 [2]西北工业大学自动化学院,西安710072

出　　处：《航空兵器》2007年第3期20-24,共5页Aero Weaponry

摘　　要：针对可化为区间系统模型的一类参数不确定系统,研究了以二次稳定性和二次性能指标为条件的鲁棒控制器设计方法,将区间模型的鲁棒控制问题转化为标准H∞控制问题求解,简化了控制器设计。利用这种方法研究了俯仰飞行控制系统镇定问题和俯仰姿态PID/H∞混合控制问题,仿真结果证明该方法是有效可行的。A robust controller design method is studied for systems with parametric uncertainties. Quadratic stability and quadratic performance index for rejecting external disturbance are used in controller design. By some transformations, the problem is converted to a standard H∞ control, and the feedback gain matrix can be obtained through solving a Riccati equation. The stabilized controller for a flight control system in four characteristic points demonstrates the effectiveness. Using the method, a hybrid PID/H∞ controller is designed for a pitch attitude control system described by interval models. The performances in setting time and overshoot are of significant advantage over PID control.

关 键 词：鲁棒控制 参数不确定 区间系统 飞行控制系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TJ765.2[自动化与计算机技术—控制科学与工程]