| 磁悬浮轴承数字控制的稳定性分析及预补偿算法 |
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| 引用本文： | 李德广,刘淑琴.磁悬浮轴承数字控制的稳定性分析及预补偿算法[J].电工技术学报,2011(6):108-112. |
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| 作者姓名： | 李德广 刘淑琴 |
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| 作者单位： | 山东大学电气工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50775129) |
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| 摘 要： | 采用数字控制技术取代传统的模拟控制是磁悬浮轴承控制技术的发展方向。但数字控制器固有的时延现象会严重影响控制器的品质,甚至引起控制器工作的失败。本文在研究了磁悬浮轴承数字控制时延的组成及其对控制系统性能影响的基础上提出了一种新的时延补偿算法,该算法通过预测下一采样时刻的系统输出来消除时延对控制系统的影响。预测算法由磁悬浮轴承的离散化模型得到,算法系数由神经网络修正。实验结果表明该算法能够很好地补偿数字控制器的时延,实现了数字控制磁悬浮轴承的稳定悬浮和旋转。
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| 关 键 词： | 磁悬浮轴承 数字控制 时延 补偿算法 |
Stability Analysis of the AMB Digital Control System and Its Prediction Compensatory Algorithm |
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| Li Deguang Liu Shuqin.Stability Analysis of the AMB Digital Control System and Its Prediction Compensatory Algorithm[J].Transactions of China Electrotechnical Society,2011(6):108-112. |
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| Authors: | Li Deguang Liu Shuqin |
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| Affiliation: | Li Deguang Liu Shuqin(Shandong University Jinan 250061 China) |
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| Abstract: | Using digital control technology in active magnetic bearing(AMB) system has many advantages,but the time delay in digital controller can seriously affect the quality of the control system,and even lead to the failure of the controller.On the basis of the research on the component of the time delay and its effect on the control system,an compensatory algorithm for the time delay is given in this paper.This algorithm removes the time delay effect by means of predicting the output of system in the next samplin... |
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| Keywords: | Active magnetic bearing digital control time delay compensatory algorithm |
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