| 采用改进型扰动观测器的控制方法 |
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| 引用本文： | 谢巍,何忠亮.采用改进型扰动观测器的控制方法[J].控制理论与应用,2010,27(6):695-700. |
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| 作者姓名： | 谢巍 何忠亮 |
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| 作者单位： | 华南理工大学,自动化科学与工程学院,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目(60704022); 国家自然科学基金重大研究计划资助项目(90816028); 广东省自然科学基金资助项目(07006470); 教育部新世纪优秀人才支持计划资助项目(NCET–08–0206). |
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| 摘 要： | 提出一种适用于非最小相位对象的改进型扰动观测(DOB)结构.通过新增两个控制器,该结构不但对标称性能控制器输出进行动态补偿,而且还补偿了系统输出反馈信号.因此,基于新DOB的控制结构不但能在低频段很好的抑制外部干扰,消除实际被控模型摄动对闭环系统的输出性能的影响,更重要的是提高了抑制高频测量噪声的能力.最后,讨论了该控制结构的内部稳定性和鲁棒稳定性.
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| 关 键 词： | 扰动观测器(DOB) 鲁棒控制 非最小相位 测量噪声 |
| 收稿时间： | 2009/1/13 0:00:00 |
| 修稿时间： | 2009/9/10 0:00:00 |
Control method with improved disturbance observer |
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| XIE Wei and HE Zhong-Liang.Control method with improved disturbance observer[J].Control Theory & Applications,2010,27(6):695-700. |
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| Authors: | XIE Wei and HE Zhong-Liang |
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| Affiliation: | College of Automation Science and Engineering,South China University of Technology,College of Automation Science and Engineering,South China University of Technology |
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| Abstract: | An improved disturbance observer(DOB) is proposed for non-minimum phase systems. In this structure, both the nominal performance controller output and the feedback signal from the system output are dynamically compensated
by two additional controllers. Hence, the effect of the external disturbances in low frequency and the model uncertainties in system output are eliminated. Furthermore, the capability in suppressing the high frequency measurement noise is highly improved. Finally, the internal stability and the robust stability of the whole control system are discussed. |
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| Keywords: | disturbance observer(DOB) robust control non-minimum phase measurement noise |
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