| 网络控制系统中的时戳预测函数控制 |
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| 引用本文： | 张奇智,张卫东.网络控制系统中的时戳预测函数控制[J].控制理论与应用,2006,23(1):126-130. |
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| 作者姓名： | 张奇智 张卫东 |
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| 作者单位： | 上海交通大学,自动化系,上海,200240 |
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| 基金项目： | 国家自然科学基金资助项目(69984003); 上海市科技启明星资助项目(04QMH1405) |
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| 摘 要： | 传统预测函数控制算法不能有效处理网络控制系统中的随机延迟,为此提出了时戳预测函数控制算法.该算法使用时间戳来估计由网络引入的控制延迟,在预测系统未来输出时明确考虑了该延迟,然后借鉴传统预测函数控制算法的基本策略,得到了适用于网络控制系统的控制规律.进一步由TrueT im e工具箱搭建了网络控制系统仿真平台,对比了时戳预测函数控制算法和传统预测函数控制算法.仿真结果表明随着网络引入延迟的增大,时戳预测函数控制算法给出控制品质明显优越于传统预测函数控制算法.
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| 关 键 词： | 网络控制系统 随机延迟 预测函数控制 工业以太网 |
| 文章编号： | 1000-8152（2006）01-0126-05 |
| 收稿时间： | 2004-09-10 |
| 修稿时间： | 2004-09-102005-05-27 |
Time-stamped predictive functional control in networked control systems |
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| ZHANG Qi-zhi,ZHANG Wei-dong.Time-stamped predictive functional control in networked control systems[J].Control Theory & Applications,2006,23(1):126-130. |
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| Authors: | ZHANG Qi-zhi ZHANG Wei-dong |
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| Affiliation: | Department of Automation,Shanghai Jiaotong University,Shanghai 200240,China |
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| Abstract: | Conventional predictive functional control(CPFC) algorithm cannot deal with random delays in networked control systems(NCS).To solve this problem,the time-stamped predictive functional control(TSPFC) algorithm is proposed.TSPFC uses time-stamp to estimate the network-induced control delays,which are specifically considered for predicting the future plant outputs,and then the control law that applies to NCS is derived based on the basic strategy of CPFC algorithm.Furthermore,a networked control system based on TrueTime toolbox is constructed,on which the proposed TSPFC algorithm is compared with CPFC algorithm.The simulation results show that TSPFC algorithm gives much better control performance than CPFC algorithm when the network-induced delays are increased. |
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| Keywords: | networked control systems random delays predictive functional control industrial Ethernet |
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