Revisit of first order unstable time delay systems with P and PI controllers: A digital control approach

Author

Leng, Tongtong ; Yan, Peng

Author_Institution

Sch. of Mech. Eng., Shandong Univ., Jinan, China

fYear

2012

fDate

25-27 July 2012

Firstpage

4764

Lastpage

4768

Abstract

We consider the control of first order unstable systems with time delays in this paper. Explicit tuning formulae are derived for Proportional (P) and Proportional-Integral (PI) controllers, based on the digitized open loop systems. Stability range is also discussed for the feedback systems with delays. Compared with existing results, the present method significantly improves the accuracy and simplifies the tuning process. Numerical examples are given to illustrate this algorithm, where several relevant methods are also compared.

Keywords

PI control; control system synthesis; delays; digital control; feedback; open loop systems; P controllers; PI controllers; digital control approach; digitized open loop systems; explicit tuning formulae; feedback systems; first order unstable time delay systems; proportional controller; proportional-integral controllers; stability range; tuning process; Asymptotic stability; Delay effects; Numerical stability; Stability criteria; Transfer functions; Tuning; Digital Control; Nyquist Criterion; Stability; Time-delay Systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (CCC), 2012 31st Chinese

Conference_Location

Hefei

ISSN

1934-1768

Print_ISBN

978-1-4673-2581-3

Type

conf

Filename

6390765