Combination of sliding mode controller and PI controller using fuzzy logic controller

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

29 Citations (Scopus)


This paper proposes an approach to combine a sliding mode controller (SMC) and a PI controller using a fuzzy logic controller. An SMC can give good transient performance. However, the steady state performance is poor due to the presence of discontinuous control which causes chattering. On the other hand, a PI controller can offer zero steady state error. Hence, combining these two controllers by a fuzzy logic controller can combine their advantages and remove their disadvantages. Although the PI sub-system has one order higher than the SMC subsystem, the closed-loop system stability under the control of this fuzzy logic controller can still be proved by applying a new proposed method. An illustrative example shows that good transient and steady state responses can be obtained by applying the proposed controller.
Original languageEnglish
Title of host publicationIEEE International Conference on Fuzzy Systems
Number of pages6
Publication statusPublished - 1 Jan 1998
EventProceedings of the 1998 IEEE International Conference on Fuzzy Systems,. Part 2 (of 2) - Anchorage, AK, United States
Duration: 4 May 19989 May 1998


ConferenceProceedings of the 1998 IEEE International Conference on Fuzzy Systems,. Part 2 (of 2)
Country/TerritoryUnited States
CityAnchorage, AK

ASJC Scopus subject areas

  • Chemical Health and Safety
  • Software
  • Safety, Risk, Reliability and Quality

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