Fault-tolerant control method for active pointing of ultra quiet platform

被引：0

作者：

Wang Y.-Y. ^{[1
,2
]}

Tang L. ^{[1
,2
]}

He Y.-Z. ^{[1
,2
]}

机构：

[1] Beijing Institute of Control Engineering, Beijing

[2] Science and Technology on Space Intelligent Control Laboratory, Beijing

来源：

Yuhang Xuebao/Journal of Astronautics | 2016年 / 37卷 / 12期

关键词：

Active pointing; Decoupling matrix; Fault-tolerant control; Selection of redundant degree of freedom; Ultra quiet platform;

D O I：

10.3873/j.issn.1000-1328.2016.12.008

中图分类号：

学科分类号：

摘要：

A fault-tolerant control method of active pointing is proposed for the actuator failures of an ultra quiet platform. First of all, based on the general dynamic model of an ultra quiet platform, the decoupling model and the decoupling matrix are derived for pointing control. It transforms a highly coupled multi-input multi-output system into many relatively simple single-input single-output systems, which is beneficial to the design of the controller and the introduction of the fault-tolerant control method. On this basis, the reconstruction strategy for pointing control is developed, and the new decoupled matrix is built for the actuator faults. Further, the option method for the redundant degree of freedom is given based on the minimum condition number of the decoupling matrix. Finally, the numerical simulation is made. The simulation results show that the fault-tolerant control method based on the optimal selection of the redundant degree of freedom can minimize the influences on active pointing control of an ultra quiet platform in case of actuator failures. © 2016, Editorial Dept. of JA. All right reserved.

引用

页码：1457 / 1465

页数：8

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