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Title: Relationship on stabilizability of lti systems by P and PI controllers
Authors: Zhang, Z.
Wang, Q.-G. 
Zhang, Y.
Keywords: Equivalence
PID controller
Routh array
Issue Date: Jun-2007
Citation: Zhang, Z.,Wang, Q.-G.,Zhang, Y. (2007-06). Relationship on stabilizability of lti systems by P and PI controllers. Canadian Journal of Chemical Engineering 85 (3) : 374-377. ScholarBank@NUS Repository.
Abstract: This paper investigates the relationship on stabilizability of linear time-invariant (LTI) systems by P and Pl controllers. Elementary tools such as the Routh stability criterion and Root-Locus method are employed in the analysis. It is found that Pl can stabilize all the systems that P stabilizes but in general the converse is not true. The cases with the equivalence of stabilizability by P and Pl are established and they are in general loworder systems with few zeros. The cases with non-equivalence are also identified.
Source Title: Canadian Journal of Chemical Engineering
ISSN: 00084034
Appears in Collections:Staff Publications

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