基于状态观测器的H-状态反馈控制

本文提出一种基于状态观测器的H_∞曲状态反馈控制,把输出反馈的H_∞控制问题转换成使用状态观测器的H_∞控制问题.通过直接求解状态空间方程,可以获得使用状态观测器的H_∞控制器及其存在的充要条件,它依赖于两个Rjccati方程的解,而且对控制对象的约束不需要满足所谓的正交条件,状态观测器的阶数与控制对象相同,它的输出是控制对象在最坏扰动作用下的状态估计值。

H- State Feedback Control Based on State Observer

This paper introduces a design of H- state feedback control based on state observer. H- control problem with output feedback is reduced to H- control problem using the state observer. By solving the state space equations directly, we can obtain an H- controller and the necessary and sufficient conditions for its existence, which depend on the solutions to two Riccati equations and do not require that considered plants must satisfy the called orthogonality conditions. In the state observer, the dimension equals that of the plant and the output is the eatimate of the state of the plant in the presence of the worst disturbance.