Fuzzy PID Control Simulation Research on Rotational Speed Regulation for Diesel Engines

Abstract

Abstract-The online self-adjustment of parameters of diesel engines mechanical speed controller is achieved by a designed fuzzy PID controller, through establishing a mathematic model of diesel engine mechanical centrifugal speed controller and the application of the advantages of the conventional PID control and fuzzy control. The fuzzy PID diesel engine mechanical speed control system is simulated by Simulink of MATLAB. The digital electronic governor depends on controlling software to realize the function of regulation and control. It can automatically regulate the accelerograph of the diesel engine, gives the engine the right amount fuel oil, and lets the diesel engine work at the fixed rotational speed when the load is being changed. It also has solved the mechanical governor problems such as poor accuracy and large time consumption to achieve stable state, and it is versatile and possesses extensional ability. The simulation results suggest fine dynamic performance, strong robustness, and better adaptability, compared to the conventional PID control algorithm of fuzzy self-adjustment PID algorithm. The performance of diesel engine speed control system is thusly largely advanced.