变结构自适应控制系统研究

为了改善控制系统瞬态性能,本文从系统稳定性原则出发,提出了多模系统的变结构自适应控制策略,这种控制方法比变结构控制或自适应控制都优越,具有两者的优点.一方面可以适应参数变化,另一方面又可以调节系统的瞬态性能,使系统具有强鲁棒性.

On Variable Structure Adaptive Control System

In order to improve the dynamic properties of control systems, the authors propose a variable structure adaptive control (VSAC) scheme for multi-mode systems. The VSAC method is superior to either variable structure control method or adaptive control method and possesses two advantages: good adaptability to parameter variations and strong robustness under various uncertainties. The parameter space method [1] and the uncertainty method [3] have been utilized to design the common controller of muti-mode system, improving appreciably system robustness. Using a common controller, which is a variable structure controller, the authors design an adaptive controller that performs the adaptive compensation control according to system's on-line status. The method proposed here can lead to control system that possesses much better dynamical properties and robustness than those obtainable with the methods of siljak [1] and Chen et al [3]. The control system just mentioned has been successfully used in missile autopilot design.