| 柔性空间结构的分散模糊变结构控制 |
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| 引用本文： | 王青,胡昌华.柔性空间结构的分散模糊变结构控制[J].宇航学报,2000,21(1):23-27. |
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| 作者姓名： | 王青 胡昌华 |
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| 作者单位： | 1. 北京航空航天大学自动控制系,北京,100083
2. 解放军第二炮兵工程学院302教研室,西安,710025 |
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| 摘 要： | 提出了一种适用于一类不确定大系统的分散变结构控制方法 ,并将该方法用于柔性空间结构的控制系统设计中。考虑到复杂大系统的系统关联及不确定因素复杂 ,在控制律中引入了模糊控制规则来确定分散控制律中的非线性分量大小 ,使控制系统设计时不需知道系统不确定变化及关联的具体情况 ,简化了控制器的设计。同时 ,模糊控制规则的引入还有效减弱了一般分散变结构控制系统的抖颤问题。所设计的控制系统可以保证柔性空间结构系统在未知参数摄动以及外界干扰情况下的稳定。数字仿真结果表明该方法的有效性。
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| 关 键 词： | 分散变结构控制 模糊控制 大系统 柔性空间结构 不确定性 |
DECENTRALIZED FUZZY VARIABLE-STRUCTURE CONTROL FOR FLEXIBLE SPACE STRUCTURES |
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| Wang Qing,Hu Changhua.DECENTRALIZED FUZZY VARIABLE-STRUCTURE CONTROL FOR FLEXIBLE SPACE STRUCTURES[J].Journal of Astronautics,2000,21(1):23-27. |
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| Authors: | Wang Qing Hu Changhua |
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| Abstract: | A decentralized variable structure control for a class of nonlinear uncertain large scale systems is presented.The presented control approach is applied to uncertain large flexible space structures.In application,simple fuzzy control laws are introduced to determine the value of nonlinear control in the decentralized control system.By using the fuzzy control laws,the details of system uncertain structures need not to be known while designing controllers;furthermore,the chattering problem existing in most decentralized variable structure systems can be subdued effectively.The designed control system can suppress the vibration of large flexible space structures under the effects of unknown uncertainties.Numerical simulation results are given to illustrate its effectiveness. |
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| Keywords: | Decentralized variable structure control\ Fuzzy control\ Large scale systems\ Large fiexible space structures\ Uncertainties |
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