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Improved Delta Operator based Discrete Sliding Mode Fuzzy Controller for Buck Converter


  • Department of Electrical and Electronics Engineering, The Oxford College of Engineering, Bangalore – 560068, Karnataka, India
  • Amity School of Engineering and Technology, Lucknow – 226028, Uttar Pradesh, India
  • Dhirubhai Ambani Institute of Information and Communication Technology, Gandhinagar – 382007, Gujarat, India


A delta operator based Discrete Sliding Mode Fuzzy Controller (DSMFC) for dc-dc buck Converter is described. The discrete systems by means of shift operator turns into mathematically disordered at an unexpected sampling rates. In order to face this difficulty, the delta operator is introduced. The delta operator can convert continuous-time system into discrete-time system and vice-versa. The main aim is to increase the rate of response, develop efficiency, get excellent Robustness and chattering phenomenon inhibition. This method is easy to implement and the overall system is efficient and cost-effective. During discretization, to circumvent any data damage, quick sampling has to be done which can be achieved with the help of delta operator because of its well defined mathematical properties even at rapid sampling.


DC-DC Converter, Delta Operator, Discrete Fuzzy Sliding Mode Controller, Discrete Sliding Mode Controller, Fuzzy logic controllers, Sliding Mode Controller

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