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| 基于丢包和带宽限制网络化系统稳定性分析 | |
| 引用本文： | 詹习生,吴杰,关治洪,姜晓伟.基于丢包和带宽限制网络化系统稳定性分析[J].控制理论与应用,2014,31(8):1111-1115. |
| 作者姓名： | 詹习生 吴杰 关治洪 姜晓伟 |
| 作者单位： | 1. 湖北师范学院机电与控制工程学院,湖北黄石435002;华中科技大学自动化学院,湖北武汉430074 2. 湖北师范学院机电与控制工程学院,湖北黄石,435002 3. 华中科技大学自动化学院,湖北武汉,430074 |
| 基金项目： | 国家自然科学基金资助项目(61100076, 61370093, 61364002); 中国博士后基金资助项目(2013M540581); 湖北省教育厅青年基金资助 项目(Q20142506). |
| 摘 要： | 基于数据包丢失和网络带宽限制研究了网络化系统稳定性问题.通信网络的特征通过数据包丢失、带宽和加性白噪声来体现.采用频域的方法得到了网络化系统稳定所需信噪比的最小(极限)值.该最小(极限)值说明了网络化系统稳定所需信噪比是由通信网络通道的丢包率、带宽、系统的不稳定极点的位置和非最小相位零点的位置决定.研究结果进一步揭示网络化系统稳定所需信噪比的最小(极限)值与系统本质特征(非最小相位零点的位置和不稳定极点的位置)和通信网络参数(数据包丢失和带宽)的关系.仿真结果说明该理论的正确性. |
| 关 键 词： | 不稳定极点 非最小相位零点 网络化系统 丢包率 带宽 |
| 收稿时间： | 2013/10/10 0:00:00 |
| 修稿时间： | 2014/3/26 0:00:00 |
Stability analysis of networked system based on packet dropouts and bandwidth constraints |
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| ZHAN Xi-sheng,WU Jie,GUAN Zhi-hong and JIANG Xiao-wei.Stability analysis of networked system based on packet dropouts and bandwidth constraints[J].Control Theory & Applications,2014,31(8):1111-1115. | |
| Authors: | ZHAN Xi-sheng WU Jie GUAN Zhi-hong and JIANG Xiao-wei |
| Affiliation: | College of Mechatronics and Control Engineering, Hubei Normal University; College of Automation, Huazhong University of Science and Technology,College of Mechatronics and Control Engineering, Hubei Normal University,College of Automation, Huazhong University of Science and Technology,College of Mechatronics and Control Engineering, Hubei Normal University |
| Abstract: | The stability of networked system with packet dropouts and network bandwidth constrains is investigated. The communication network is characterized by packet dropouts, bandwidth and the additive white noise. The minimal value of signal-to-noise ratio to stabilize the networked system is obtained by frequency-domain approach. It is shown that the minimal value is heavily dependent on nonminimum phase zero positions, unstable pole positions of the given plant, the packet dropout probability and the bandwidth of communication network. The obtained result shows the relationship among the stability of networked system, structural characteristics of the given plant (non-minimum phase zero positions and unstable pole positions) and communication network parameters (packet dropouts, bandwidth). A typical example is given to illustrate the theoretical results. |
| Keywords: | unstable poles nonminimum phase zeros networked systems packet dropout probability bandwidth |
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