Abstract
This paper presents a practical fuzzy controller two axes solar tracking-based realization on digital FPGA hardware. The fuzzy logic control is based according to Mamdani rules, alpha levels, max–min operations and defuzzification method. Operations and algorithms are reduced using look-up tables for the membership values which are stored as digital values and accessed to the control process. The feasibility and versatility of the proposed technique as well as its potential as a low-cost design for solar tracking control on digital field-programmable gate array (FPGA) are shown by simulated and experimental results in a photovoltaic system under different operation conditions. The proposed realization exhibits good performance related to the control and efficiency.
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