Journal Title : International Journal of Modern Trends in Engineering and Science

Author’s Name : Hema P

Volume 02 Issue 11  Year 2015

ISSN no: 2348-3121

Page no: 15-20

Abstract The  main   objective  of  this  paper   is  aimed   to design  an  intelligent   Sliding  Mode  Controller,  so  that   the control performance of this controller  can be improved.  Sliding Mode Controller (SMC) is considered as a powerful tool for controlling of nonlinear systems. SMC is an effective method to deal with system uncertainties and external disturbances. Despite of its effectiveness in many applications, SMC has a drawback of control signal chattering (high frequency switching).   This   chattering problem   can be eliminated   by using different   methods.   The  Sliding  Mode  Controller  can be  made  an  intelligent   controller   by  incorporating  a  fuzzy logic.  Fuzzy  logic  is  a  very  powerful   method   of  reasoning when  mathematical models  are  not  available  and  input  data are imprecise. By the design of an intelligent sliding mode controller   using   fuzzy  logic,  a  robust  control   method   for controlling  nonlinear  systems  can  be  obtained  and  also  the SMC  need  to be tuned  only once and  after that,  the  system can  automatically adjust  to the  process  variations.  The  main aim  of the  proposed  method  is to make  the  controller  robust and  adaptive  to changes  in the system.

Keywords— Non-linear systems; Sliding Mode; Sliding surface; Uncertainties; Fuzzy logic


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