Design of a fuzzy controller using variable structure approach for application to DC–DC converters

A variable structure approach is used to design and tune a fuzzy controller for a boost DC–DC converter. The proposed method is systematic and eliminates much of the trial-and-error commonly associated with fuzzy systems. The controller is compared against a recently published fuzzy controller that was tuned by traditional methods. Performances of both controllers are comparable, but the amount of time required for design and tuning is greatly reduced using the variable structure approach.

► A variable structure approach is used to design a fuzzy controller for a boost converter.
► The proposed method is systematic and eliminates much of the trial-and-error commonly associated with fuzzy systems.
► The controller is compared against a fuzzy controller that was tuned by traditional trial and error method.
► Performances of both controllers are comparable, but the amount of time required for design and tuning is greatly reduced using the variable structure approach.