广东工业大学学报 ›› 2014, Vol. 31 ›› Issue (1): 32-35.doi: 10.3969/j.issn.1007-7162.2014.01.006

• 综合研究 • 上一篇    下一篇

带有随机时延和丢包的网络控制系统最优控制策略研究

王溥希1,冯广1,2   

  1. 广东工业大学 1.自动化学院; 2.网络信息与现代教育技术中心,广东 广州 510006
  • 收稿日期:2013-04-07 出版日期:2014-03-29 发布日期:2014-03-29
  • 作者简介:王溥希(1988-),男,硕士研究生,主要研究方向为网络控制技术.
  • 基金资助:

    国家自然科学基金资助项目(70971027)

A Study of Optimal Control Strategy for Networked Control Systems with Stochastic Delay and Packet Losses

Wang Pu-xi1, Feng Guang1,2   

  1. 1.School of Automation; 2. Center of Internet Information and Modern Education, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2013-04-07 Online:2014-03-29 Published:2014-03-29

摘要: 通过对网络控制系统的结构分析,建立了带有时延和丢包的线性网络控制系统的数学模型.在此模型基础上,对二次型性能指标下的网络控制系统的随机最优控制问题进行了分析,获得了相应的最优增益和最优性能指标的表达形式.最后,通过仿真比较了不同丢包率下的网络控制系统的随机最优控制效果.Matlab仿真结果表明了随机最优控制算法的有效性和丢包率临界值的范围.

关键词: 网络控制系统;数据包丢失;最优控制

Abstract: Via the analysis of the structure of networked control systems, it presents the linear mathematic model with stochastic delay and packet losses. Based on the model, the stochastic control problem with quadratic criteria of the networked control systems was analyzed. The expressions of optimal gain and optimal performance index were given. Ultimately, the stochastic control effect of networked control systems with delay and different probability of packet losses rate were compared by simulation. The simulation results of Matlab show the effectiveness of the stochastic control algorithm and the range of the critical value of the packet loss rate.

Key words: networked control systems; packet losses;optimal control

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