纯滞后控制系统采样周期的选择  

Sample Period's Choice Problem of Control System with Pure Delay

作　　者：冯国良[1] 李太福[2] 钟秉翔[1] 刘玉成[1] 李膺[1] 

机构地区：[1]重庆工业高等专科学校自动化系,重庆400050 [2]重庆工学院电子工程系,重庆400050

出　　处：《重庆大学学报（自然科学版）》2003年第6期125-128,共4页Journal of Chongqing University

基　　金：重庆市教委科学技术研究资助项目 ( 0 110 0 2 )

摘　　要：工业控制中许多对象都具有纯滞后特征 ,对纯滞后系统的控制问题进行研究 ,具有理论意义和实际应用参考价值。在纯滞后系统中 ,由于对象存在纯滞后时间τ ,因此常使人觉得 ,对这类系统的控制 ,采样周期选择为τ控制效果比较好 ,而一些文献也执此观点。为探讨纯滞后控制系统中采样周期的选择问题 ,用数字仿真方法 ,对选择不同采样周期的控制效果进行了计算 ,对采样周期的合理选择问题进行分析。数字仿真结果表明 ,对纯滞后控制系统 ,有关文献给出的采样周期T选择为纯滞后时间τ的结论是不合适的 。For the vast objects in industry control,the specific delay feature exists . It is valuable to study the control problem of the system with pure delay for control theory and control engineering. Because there is pure delay time τ in the object , so it is taken to be better choice that the sample period T is equal to pure delay time τ , and some literature persists in this opinion also . In order to study sample period's influence on the system , the author carried on calculation for this problem , using digital simulation method. The system's control effect caused by the choice of different sample period is calculated and analyzed , and the reasonable choice problem of sample period is discussed . The research result shows it is not suitable that the sample period T is chosen to be the system's pure delay time τ for the control system with pure delay.

关 键 词：复杂系统 纯滞后系统 控制 采样周期 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TP273[自动化与计算机技术—计算机科学与技术]