Research on implementation of fuzzy logic control arithmetic based on FPGA

A synchronization design technology is adopted, and the encoding method of the address and data of membership function and fuzzy control rules is presented, as well the structure of look-up table. To implementing the fuzzy logic control arithmetic based on FPGA, a kind of method is presented to construct the individual module of Fuzzy logic controller such as Fuzzification of input based on triangle membership function, fuzzy inference of Max-Min-Inference and Defuzzification by the method of Center of Gravity. The inner resources of FPGA including memory, logic gate and macro cell etc are utilized to do it. The fuzzy agrithmetic based on FPGA is embedded into a servo control system of electrical actuator and it validates the realizability and real-time function.