Title :
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
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;
Conference_Titel :
Control Conference (CCC), 2012 31st Chinese
Conference_Location :
Hefei
Print_ISBN :
978-1-4673-2581-3
