强抗扰恒值系统的逆LQ设计

本文着重讨论标量恒值系统在物理约束下的动态抗扰控制问题,提出一种能有效提高系 统动态抗扰能力的控制装置--瞬态补偿器;介绍了一种基于LQ最优控制逆问题的强抗扰 (指在一类外扰作用下动态误差小,且具有输出调节性质)控制器设计方法.通过对一调速系 统的实例研究,表明这种控制器可以大幅度地改善动态速降;无静差且稳定性充裕;物理实验 结果满意.

An Inverse LQ Design of Strong Disturbance rejection Control for Regulating Systems

Taking into consideration physical constraints of the plant, dynamie disturbance rejection control for scalar regulating system is discussed in this paper. A new controller, the transient compensator is proposed. It can strenthen dynamic disturbance resistibility of the system. And a design procedure based on the inverse problem of LQ optimal contal for a strong disturbance rejection controller (which shows small dynamic errors under a kind of disturbances and the output requlation property) is discussed. An example of a D. C. speed control system indicates that with this controller, the impact drop can be reduced effectively, and at the same time, the output regulation and sufficient stability margines can be guaranteed. Resuslts of system, physical experiement are also satisfactory.