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Ferdi Brahim
Benachaiba Chellali
Dib Samira
Dehini Rachid

Abstract

PI controller is very common in the control of DVRs. However, one disadvantage of this conventional controller is the fact that by using fixed gains, the controller may not provide the required control performance, when there are variations in the system parameters or operating conditions. To overcome this problem, an adaptive PI controller using fuzzy logic is proposed. The controller is composed of fuzzy controller and PI controller. According to the error and error rate of the control system and fuzzy control rules, the fuzzy controller can online adjust the two parameters of the PI controller in order to be adapted to any variations in the operating conditions. The simulation results have proved that the proposed control method greatly improves the performance of the DVR compared to the conventional PI controller.

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