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Attainment of PI Achievable Performance for Linear SISO Processes with Deadtime by Iterative Tuning
Author(s) -
Goradia D. B.,
Lakshminarayanan S.,
Rangaiah G. P.
Publication year - 2005
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450830413
Subject(s) - control theory (sociology) , pid controller , dead time , computer science , pi , impulse response , impulse (physics) , mathematics , control (management) , control engineering , engineering , statistics , physics , artificial intelligence , temperature control , mathematical analysis , geometry , quantum mechanics
This work presents a practical scheme to attain PI achievable performance (the performance achievable with a proportional integral (PI) controller) for linear SISO processes with dead time driven by stochastic disturbances. It uses a combination of a quantitative measure called Control Loop Performance Index (CLPI) and signature plots of the closed loop disturbance impulse response (IR) to arrive at PI achievable performance in an iterative manner. The proposed methodology requires only routine operating data and knowledge of the process delay, and its efficacy is illustrated through several case studies.