An improved parameter estimation method using limit cycle data

被引：0

作者：

Kaya, I ^{[1
]}

Atherton, DP ^{[1
]}

机构：

[1] Univ Sussex, Brighton BN1 9RH, E Sussex, England

来源：

UKACC INTERNATIONAL CONFERENCE ON CONTROL '98, VOLS I&II | 1998年

关键词：

relay feedback; limit cycle; A-locus; identification;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The paper introduces the A-Locus method which is an exact method for limit cycle investigation in relay controlled loops for parameter estimation for stable FOPDT and SOPDT transfer functions. The method has also been extended to unstable FOPDT and SOPDT transfer functions since it is possible to have unstable plant models for some chemical processes. The method gives two advanteges. First, the steady-state gain can be calculated from the relay feedback test. Secondly, all parameters of a SOPDT transfer function can be obtained, using only one relay test. The obtained parameters are exact if there are no measurement errors or disturbances.

引用

页码：682 / 687

页数：6