PID参数自整定中的新方法  

A New Method in PID Parameter Self-adjusting

作　　者：陈兵芽[1] 张小海[2] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031 [2]南昌航空工业学院测控系,江西南昌330063

出　　处：《南昌大学学报（工科版）》2007年第3期246-248,共3页Journal of Nanchang University(Engineering & Technology)

基　　金：江西省教育厅科技计划资助项目(赣教技字[2006]168号);南昌航空工业学院教改基金资助项目(ZS117)

摘　　要：PID控制是生产自动控制发展中最基本的一种控制方法,其原理简单、使用方便、适应性强,是一种目前应用最广泛的基础控制方法.但关键问题是如何方便地整定它的三个参数(比例系数Kp,积分时间常数Ti,微分时间常数Td),以使系统具有理想的性能.提出了一种以两个控制品质参数(过渡时间Ts和超调量δ)等权和最小为整定准则——控制品质加权法,通过对比分析仿真实验结果表明,该方法与ITAE相比较,其超调量减少1/2,调整时间缩短到2/3左右.PID is one of the basic methods in automatic control development. It is simple in principle, and can adapt to different users＇ requirements. Thus, it has been widely used. But the major problem is how to conveniently adjust its three parameters（ Kp, Ti, Td ）, so as to get ideal quality of the system. This paper advances a new method-control quality weighing （CQW） method. The key to the new method is that the sum of two control qualities （ transient time Ts and overshoot 8） equals to minimum with the same weighing. A large quantity of data and pictures outputted from multisimulations fully show that the qualities get better by the CQW method than those by the used methods like ITAE code. The overshoot is cut down by 1/2, and the transient time is cut down by 1/3 or so.

关 键 词：PID控制 控制品质加权法 过渡时间 超调量 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]