| 二阶系统模糊变结构控制器设计及稳定性分析 |
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| 引用本文： | 张翼飞,杨辉,邓方林.二阶系统模糊变结构控制器设计及稳定性分析[J].系统工程与电子技术,2005,27(2):312-315. |
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| 作者姓名： | 张翼飞 杨辉 邓方林 |
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| 作者单位： | 1. 第二炮兵工程学院自动控制系,陕西,西安,710025
2. 第二炮兵工程学院101教研室,陕西,西安,710025 |
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| 摘 要： | 采用滑模变结构控制时不可避免会产生抖振问题,尤其是对于那些变参数及具有不可测量持续扰动的系统,通过常规方法难以克服抖振对系统控制性能带来的不利影响。为此将模糊控制与滑模变结构控制相结合,设计了一种模糊变结控制器,既保持了变结构控制的鲁棒性及快速性,又能较好地消除抖振现象,并利用描述函数法分析了该控制系统的稳定性。最后通过一个具体的导弹变系数二阶控制系统的应用实例验证了该控制器的性能。
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| 关 键 词： | 滑模变结构控制 模糊变结构控制 抖振 变参数 描述函数 稳定性 |
| 文章编号： | 1001-506X(2005)02-0312-04 |
| 修稿时间： | 2004年3月22日 |
Design of fuzzy variable structure controller for the second-order system and its stability analysis |
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| ZHANG Yi-fei,YANG Hui,DENG Fang-lin.Design of fuzzy variable structure controller for the second-order system and its stability analysis[J].System Engineering and Electronics,2005,27(2):312-315. |
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| Authors: | ZHANG Yi-fei YANG Hui DENG Fang-lin |
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| Institution: | ZHANG Yi-fei~1,YANG Hui~2,DENG Fang-lin~1 |
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| Abstract: | Chattering is inevitable to sliding mode variable structure control (VSC). Common methods are not efficient to reduce chattering, especially for those systems with variable parameters or which are exposed to unmeasurable durative disturbance. For this reason a fuzzy variable structure controller (FVSC) is designed which combines the advantages of fuzzy control and VSC. The controller not only keeps good robustness and sensitivity, but also can efficiently reduce chattering. The stability of the FVSC system is analyzed by applying the method of describing function. Finally an example of missile control system with the second-order variable coefficient is give to test the performance of the controller. |
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| Keywords: | sliding mode variable structure control fuzzy variable structure control chattering variable parameter describing function stability |
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