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Implementation of a Low-cost Microprocessor-based Fuzzy Controller

The paper describes implementation of a low- cost microprocessor-based fuzzy controller applied to the angular speed control loop of a DC motor drive. The proposals for simplification of fuzzy controller operations including register oriented fuzzy encoding and pagewise scaling of controller's digital input values have been given together with a simple way of scanning the fuzzy rule-table, which provides almost invariant computational time consumption with respect to the total number of control rules. The 8-bit microcomputer version of the proposed fuzzy controller was built and tested experimentally in the laboratory setup of a DC drive. The experimental results have confirmed the simplicity and efficiency of the discussed fuzzy control scheme.

fuzzy controller, microprocessor, implementation

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