Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/80982
DC FieldValue
dc.titlePI tuning in terms of gain and phase margins
dc.contributor.authorFung, H.-W.
dc.contributor.authorWang, Q.-G.
dc.contributor.authorLee, T.-H.
dc.date.accessioned2014-10-07T03:03:23Z
dc.date.available2014-10-07T03:03:23Z
dc.date.issued1998-09
dc.identifier.citationFung, H.-W.,Wang, Q.-G.,Lee, T.-H. (1998-09). PI tuning in terms of gain and phase margins. Automatica 34 (9) : 1145-1149. ScholarBank@NUS Repository.
dc.identifier.issn00051098
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/80982
dc.description.abstractIn this paper, a simple PI controller design method is proposed which can achieve user-specified gain and phase margins if they are suitable, or otherwise the automatically adjusted alternatives for performance enhancement. Unlike reduced-order model-based tuning methods, exact margins, once specified or adjusted, can be accomplished regardless of the process order and damping nature. The response of the closed-loop system using the proposed design is hence more predictable than those using model-based methods when performance specifications are given in gain and phase margins. The proposed method is based on finding the intersections between two graphs that are plotted using the frequency response of the process. The given gain and phase specifications can be achieved if intersections can be found, and each intersection corresponds to one solution. Suggestions are provided on how to modify the specifications for achieving satisfactory responses for cases where there are no solution or when the specifications can be met but poor responses result. Simulation examples are given to show the usefulness of the method. © 1998 Elsevier Science Ltd. All rights reserved.
dc.sourceScopus
dc.subjectFrequency response
dc.subjectGain margin
dc.subjectGraphical method
dc.subjectPhase margin
dc.subjectPID controller
dc.typeArticle
dc.contributor.departmentELECTRICAL ENGINEERING
dc.description.sourcetitleAutomatica
dc.description.volume34
dc.description.issue9
dc.description.page1145-1149
dc.description.codenATCAA
dc.identifier.isiutNOT_IN_WOS
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