| 主动变采样周期方法在网络化控制系统中的应用 |
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| 引用本文： | 姚远,戴亚平,刘秀芝.主动变采样周期方法在网络化控制系统中的应用[J].北京理工大学学报,2013,33(9):970-975. |
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| 作者姓名： | 姚远 戴亚平 刘秀芝 |
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| 作者单位： | 北京理工大学 自动化学院,北京,100081;北京理工大学 自动化学院,北京,100081;北京理工大学 自动化学院,北京,100081 |
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| 摘 要： | 针对基于Internet的网络控制系统中由于控制器位置变化可能导致控制性能下降甚至不稳定的问题,提出了主动变采样周期的网络化控制器设计方法. 为变采样周期的网络化控制系统建立了离散数学模型,采用Lyapunov方法给出了短延时情况下主动变采样周期网络控制系统闭环稳定的充分条件,并在倒立摆网络化控制系统中进行了实验验证. 实验结果证明了采用固定采样周期的控制器在网络位置变化后可能使系统不稳定,采用主动变采样周期的状态反馈控制方法设计的控制器在网络位置变化后仍然可以使系统稳定.
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| 关 键 词： | 网络化控制 网络延时 主动变采样周期 |
| 收稿时间： | 2011/10/10 0:00:00 |
Active Variable-Period Sampling in Networked Control Systems |
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| YAO Yuan,DAI Ya-ping and LIU Xiu-zhi.Active Variable-Period Sampling in Networked Control Systems[J].Journal of Beijing Institute of Technology(Natural Science Edition),2013,33(9):970-975. |
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| Authors: | YAO Yuan DAI Ya-ping and LIU Xiu-zhi |
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| Institution: | School of Automation, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | The variable location of controller in Internet-based networked control systems would worsen system performance or arouse system unstable. To deal with such a problem, this paper proposes a design method of networked controller with active varying sampling period. The discrete mathematical model of networked control systems with variable sampling period was set up. Then the sufficient condition of stability for networked control systems with short time-delay was given using Lyapunov functional approach. The effectiveness of the presented approach has been verified by experiments on a networked control system of inverted-pendulum. |
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| Keywords: | networked control network delay active varying sampling period |
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