FUZZY LOGIC FOR STRUCTURAL SYSTEM CONTROL

Authors

  • HERBERT MARTINS GOMES UFRGS - UNIV. FED. DO RIO GRANDE DO SUL DEMEC - DEP. ENG. MECâNICA

Keywords:

FUZZY SETS, VIBRATION CONTROL, HEURISTIC ALGORITHMS

Abstract

THIS PAPER PROVIDES SOME INFORMATION AND NUMERICAL TESTS THAT AIMS TO INVESTIGATE THE USE OF A FUZZY CONTROLLER APPLIED TO CONTROL SYSTEMS. SOME ADVANTAGES ARE REPORTED REGARDING THE USE OF THIS CONTROLLER, SUCH AS THE CHARACTERISTIC EASE OF IMPLEMENTATION DUE TO ITS SEMANTIC FEATURE IN THE STATEMENT OF THE CONTROL RULES. ON THE OTHER HAND, IT IS ALSO HYPOTHESIZED THAT THESE SYSTEMS HAVE A LOWER PERFORMANCE LOSS WHEN THE SYSTEM TO BE CONTROLLED IS NONLINEAR OR HAS TIME VARYING PARAMETERS. NUMERICAL TESTS ARE PERFORMED USING MODAL LQR OPTIMAL CONTROL AND FUZZY CONTROL ON NON-COLLOCATED SYSTEMS WITH FULL STATE FEEDBACK IN A TWO-DIMENSIONAL STRUCTURE. THE PAPER PROPOSES A WAY OF DESIGNING A CONTROLLER THAT MAY BE A SUPERVISORY FUZZY CONTROLLER FOR A TRADITIONAL CONTROLLER OR EVEN A FUZZY CONTROLLER INDEPENDENT FROM THE TRADITIONAL CONTROL, CONSISTING ON INDIVIDUAL MODE CONTROLLERS. SOME COMMENTS ARE DRAWN REGARDING THE PERFORMANCE OF THESE PROPOSALS IN A NUMBER OF ARRANGEMENTS.

Author Biography

HERBERT MARTINS GOMES, UFRGS - UNIV. FED. DO RIO GRANDE DO SUL DEMEC - DEP. ENG. MECâNICA

PROFESSOR OF THE MECHANICAL ENGINEERING DEPARTMENT

Downloads

Published

2012-03-01

Issue

Vol. 9 No. 1 (2012)

Section

Articles

License

Authors who publish with this journal agree to the following terms:

 

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).