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Loop‐Shaping Design Of Pid Controllers With Constant T i /T d RATIO
Author(s) -
Wallén A.,
ÅRström K. J.,
Hägglun T.
Publication year - 2002
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1111/j.1934-6093.2002.tb00080.x
Subject(s) - pid controller , control theory (sociology) , maximization , loop (graph theory) , constraint (computer aided design) , constant (computer programming) , sensitivity (control systems) , mathematics , computer science , control engineering , mathematical optimization , control (management) , engineering , temperature control , electronic engineering , artificial intelligence , combinatorics , geometry , programming language
This paper presents new tuning rules for PID controllers based on loop shaping. Previous research has shown that maximization of the integral gain subject to constraints on the maximum sensitivity is an efficient design method for PI controllers, but that additional constraints are needed for design of PID controllers. In this paper, an additional constraint is obtained by restricting the ratio between integral time and derivative time. It is shown that this gives a numerically efficient method that gives good results for a large class of processes.