| 精密转台的离散变结构控制 |
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| 引用本文： | 李传学,周伊琳,王茂.精密转台的离散变结构控制[J].哈尔滨工业大学学报,2006,38(8):1340-1343. |
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| 作者姓名： | 李传学 周伊琳 王茂 |
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| 作者单位： | 1. 天津大学,管理学院,天津,300072
2. 哈尔滨工业大学,空间控制与惯性技术研究中心,哈尔滨,150001 |
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| 摘 要： | 针对传统变结构控制的抖振现象及变结构控制应用于离散系统时易失去其鲁棒性的问题,提出了一种新的离散变结构控制方法.此方法采用了带调整参数的递归式切换函数并针对不确定因素设计了无须知道扰动上界的估计器.将该方法应用于精密转台的控制系统,仿真结果表明此方法对参数摄动及外界干扰具有良好鲁棒性,而且可有效消除系统的抖振现象.
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| 关 键 词： | 离散变结构控制 回归式切换函数 不确定系统 干扰估计 |
| 文章编号： | 0367-6234(2006)08-1340-04 |
| 收稿时间： | 2004-05-21 |
| 修稿时间： | 2004年5月21日 |
Discrete-time variable structure control for accuracy turntable |
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| LI Chuan-xue,ZHOU Yi-lin,WANG Mao.Discrete-time variable structure control for accuracy turntable[J].Journal of Harbin Institute of Technology,2006,38(8):1340-1343. |
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| Authors: | LI Chuan-xue ZHOU Yi-lin WANG Mao |
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| Affiliation: | Research Centre of Inertia Navigation Testing Equipment, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Vibration phenomenon in traditional variable structure control is an important issue and the robustness is easily to be lost when applying variable structure control theory to the discrete system.A new discrete-time variable structure control scheme is proposed in this paper.The method adopts a recursive switch function with a tuning parameter and a disturbance estimator for uncertainty without knowing the upper band of disturbance.With the application of this to accuracy turntable's control system,simulation results demonstrate that the system designed in this paper not only has strong robustness against parametric uncertainty and external disturbance,but also eliminate vibration phenomenon effectively. |
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| Keywords: | discrete-time variable structure control recursive switching function uncertain system disturbance estimation |
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