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Gain and phase margin controller tuning: FOPTD or IPDT model-based methods?

Lookup NU author(s): Dr Ming Tham

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Abstract

Control problems have been experienced with FOPTD-based PID tuning methods when the normalized dead-time of the process model is small. One proposed solution has been to treat the FOPTD system model, with small normalized dead-time, as an Integral Plus Dead Time (IPDT) process for controller tuning purposes. There has been very little work though on investigating the transition point, as a normalized dead-time value, when the designer should choose to use either FOPTD-based or IPDT-based PID control design methods. This contribution considers finding the transition point(s) for the gain and phase margin design method. For a range of values of normalized dead-time the performance of the IPDT-based PI controller will be compared with that of the FOPTD-based PI controller for both set-point response and load disturbance rejection.


Publication metadata

Author(s): Jones RW, Tham MT

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: SICE Annual Conference 2004

Year of Conference: 2004

Pages: 1139-1143

Publisher: IEEE

URL: http://dx.doi.org/10.1109/SICE.2004.191838

DOI: 10.1109/SICE.2004.191838

Notes: Article no. WPI-9-1

Library holdings: Search Newcastle University Library for this item

ISBN: 4907764227


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