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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.
Keywords-Diesel Engine; Rotational Speed Regulation;
Fuzzy PID Control Algorithm; Mathematic Model; Simulation
of Control System
I. INTRODUCTION
In order to obtain stable rotation speed of diesel engine
under various loadings speed controllers are indispensable.
The typically used speed controllers are mechanical
centrifugal speed controller which could control the
openness of the fuel injection pump by the centrifugal
forces contributed by fly balls
[1-2]
. Adopting the
conventional single PID control method is hard to satisfy
the requirement of diesel engine speed control because the
system is complex a nonlinear multi-lever type. Thus, a
new method, by combining the fuzzy control and
conventional PID control in order to accomplish the online
adjustment of parameters of PID controller, is established.
The advancement of the new fuzzy PID controller is well
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