Self-regulating fuzzy control for forward DC-DC converters using an 8-bit microcontroller

C. F. Hsu*, I. F. Chung, C. M. Lin, C. Y. Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

A self-regulating fuzzy control (SRFC) design method is proposed; this control system uses a gradient rule modification method to regulate the fuzzy rules. Moreover, to reduce the number of fuzzy rules and to strengthen the robustness of SRFC, a self-regulating fuzzy sliding-mode control (SRFSMC) design method is also developed. Both the SRFC and SRFSMC systems contain two sets of fuzzy inference logic, one being the control regulator and the other the rule modifier. The proposed SRFC and SRFSMC systems can automatically regulate the fuzzy rules to achieve satisfactory performance and make the computation easy and, hence, they are suitable for real-time control. Finally, the proposed SRFC and SRFSMC systems are applied to control a forward DC-DC converter to illustrate their effectiveness. A microcontroller-based experimental system is implemented. Experimental results show that the proposed SRFC and SRFSMC systems are robust with regard to different input voltages and load resistance variations for the forward DC-DC converter.

Original languageEnglish
Pages (from-to)1-13
Number of pages13
JournalIET Power Electronics
Volume2
Issue number1
DOIs
StatePublished - Jan 2009
EventPipelines 2009 Conference, Pipelines 2009: Infrastructure's Hidden Assets - San Diego, CA, United States
Duration: 15 Aug 200919 Aug 2009

Keywords

  • variable structure systems
  • gradient methods
  • control system synthesis
  • robust control
  • microcontrollers
  • power engineering computing

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