Marine engine rotational speed control automatic system based on Fuzzy PID logic controller

The shipping industry plays an important role in the development of nations; especially boundaries laying on the long sea coast like in Vietnam, Japan, South Korea, Philippines, etc. Due to, the main propulsion plant on ship need to maintain and keep at good condition then operating as well as lying on the shore. To keep the main engine rotational speed constant despite of the variable loads like navigation environment (wave, draught, wind and climate), engine's working state, equipment condition, etc. In this article, the authors apply the Fuzzy PID logic controller to establish the speed control model of diesel engine. The design algorithm of PID controller in this paper is to adjust the parameters K_P, K_d, K_i through fuzzy inference logic based on the model establishment on SIMULINK/ MATLAB between the error e(t) of the desired position set point and the output, and the derivation of error de(t) to make the controlled object attain the good dynamic and static performance.