大时滞系统时间协调参数调整控制策略  

Time Correspondence and Parameter Adjustment Control Strategy of Long Time Delay Systems

作　　者：喻寿益[1] 许新[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083

出　　处：《控制工程》2009年第2期148-150,共3页Control Engineering of China

基　　金：国家自然科学基金资助项目(60574030)

摘　　要：针对大时滞系统难以实现闭环稳定控制的问题,引入脉冲响应等效系统的概念,提出时间协调参数修改控制算法。该算法由两部分组成,一是通过时间协调原则修改控制器的输出;二是利用脉冲响应等效系统来修改控制器的参数,使脉冲响应等效系统和大时滞系统匹配,跟踪被控制对象参数变化产生自适应性,保证控制系统精度和稳定性。并用于氧化铝生产过程碳酸化分解工序,将原来手动操作开环控制改为闭环控制,提高了分解率和产品的合格率。该控制算法是递推算法,计算量小,便于在线实现。To the problem of the closed-loop stable control for long time delay system, the concept of pulse response equivalent system is introduced and the algorithm of time correspondence and parameter adjustment is proposed. The algorithm is composed of two parts, one adjusts of the output of the controller on the time correspondence principle, and the other adjusts controller parameters to match the pulse response equivalent system with long time delay system, so the controller can track the change of the parameters of the controlled plant. It is used in the procedure course of carbonation decomposition in the process of almnina. The open loop control is changed to the closed- loop control. The decomposition rate and the product passed rate are improved by using the method. It is a recursive algorithm with a few calculations and easy to realize on line.

关 键 词：大时滞系统 脉冲响应 时间协调 参数调整 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]