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基于在线时延辨识的网络控制系统调度
引用本文:郭戈,杨琳琳. 基于在线时延辨识的网络控制系统调度[J]. 兰州理工大学学报, 2007, 33(4): 77-82
作者姓名:郭戈  杨琳琳
作者单位:大连海事大学,自动化与电气工程学院,辽宁,大连,116026;兰州理工大学,电气工程与信息工程学院,甘肃,兰州,730050;兰州理工大学,电气工程与信息工程学院,甘肃,兰州,730050
摘    要:基于在线网络时延的辨识方法,提出一种对网络控制系统的周期信息、非周期信息和消息的实时动态调度算法.所提出的利用一种滤波器的辨识方法能够实时在线辨识网络时延,而且基于该时延辨识的调度算法能够动态地调整采样周期和分配带宽,并保证系统的性能和提高网络资源的利用率.仿真实例说明了辨识方法的有效可行性.

关 键 词:网络控制系统  调度  采样周期  网络时延
文章编号:1673-5196(2007)04-0077-06
修稿时间:2007-03-13

Scheduling of networked control systems based on online time-delay identification
GUO Ge,YANG Lin-lin. Scheduling of networked control systems based on online time-delay identification[J]. Journal of Lanzhou University of Technology, 2007, 33(4): 77-82
Authors:GUO Ge  YANG Lin-lin
Affiliation:1. College of Automation and Electrical Engineering, Dalian Maritime University, Dalian 116026, China; 2. College of Electrical and Information Engineering, Lanzhou Univ. of Teeh. ,Lanzhou 730050, China
Abstract:In this paper, a real-time dynamic scheduling algorithm for periodic data, sporadic data, and messages in networked control systems was proposed based on the method for online network time-delay identification. The identification was implemented by using a kind of filtering operation, and it could perform online real-time identification and, then, dynamically adjust the sampling period and allocate the bandwidth on the basis of foregoing identification, guaranteeing the system performance and increasing network resources. It was illustrated by a simulation example that the identification method was valid and feasible.
Keywords:networked control system   scheduling   sampling period   network-induced delay
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