Design of stable fuzzy logic controllers with combination of conventional controllers

L. K. Wong, Hung Fat Frank Leung, P. K S Tam

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

8 Citations (Scopus)


This paper shows the design of a fuzzy logic controller (FLC) which combines a sliding mode controller (SMC) and a state feedback controller (SFC). Each rule in this FLC has an SMC or an SFC as the consequent part. The role of the FLC is to schedule the two conventional controllers and obtain the final control under different antecedents. Although each sub-system defined by the antecedent part of each rule is readily stabilized by the associated SMC or SFC in the consequent part, the overall system stability on combining the rules cannot be guaranteed immediately. The system stability can be ensured by using a proposed Lyapunov function based design approach. This FLC will be applied to balance a car-pole inverted pendulum system as an illustrative example. It is shown that the FLC can keep the advantages and remove the disadvantages of the two conventional controllers.
Original languageEnglish
Title of host publicationIEEE International Symposium on Industrial Electronics
Number of pages5
Publication statusPublished - 1 Dec 1997
EventProceedings of the 1997 IEEE International Symposium on Industrial Electronics, ISIE. Part 3 (of 3) - Guimaraes, Portugal
Duration: 7 Jul 199711 Jul 1997


ConferenceProceedings of the 1997 IEEE International Symposium on Industrial Electronics, ISIE. Part 3 (of 3)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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