Robust H∞ Control for Satellite Attitude Control System with Uncertainties and Additive Perturbation
Robust H∞ Control for Satellite Attitude Control System with Uncertainties and Additive Perturbation
复制标题
具有不确定性和加性摄动的卫星姿态控制系统的鲁棒H∞控制
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Zhao
中科院分区：
文献类型：
--
作者：
Chuang Liu;Feng Wang;Keke Shi;Xuefeng Wang;Zhao
针对具有不确定性且受外部扰动、陀螺漂移和控制器扰动影响的卫星姿态控制系统，提出了一种鲁棒非脆弱H∞控制方法。首先，建立卫星姿态系统模型，并将其转化为具有不确定性的状态空间形式。基于线性矩阵不等式，给出了具有加性扰动的状态反馈鲁棒非脆弱H∞控制器存在的充分条件。当得到lmi的可行解时，就可以知道控制器的增益在一定给定值的条件下。然后，给出了混合H2/H∞定理，并与本文提出的方法进行了比较。给出了基于闭环卫星姿态控制系统的非脆弱H∞控制和混合H2/H∞控制的仿真结果，验证了所提控制方法的有效性和性能。
This paper proposed a robust non-fragile H∞ control method for satellite attitude control system with uncertainties and subject to external disturbances, gyro drifts and controller perturbation. First, the model of satellite attitude system is established and converted into a state space form with uncertainties. Sufficient condition for the existence of state feedback robust non-fragile H∞ controller in terms of additive perturbation is given based on linear matrix inequalities (LMIs). When a feasible solution of LMIs is obtained, the controller gain can be known under the condition of certain given values. Then, the theorem of mixed H2/H∞ is given to compare with the method proposed in this paper. The simulation results of non-fragile H∞ control and mixed H2/H∞ based on closed-loop satellite attitude control system are presented to demonstrate the effectiveness and performance of the proposed control method.