Semi-physical simulation of speed control for diesel engine based on NI cRIO

JIA Jun， LIANG Shu-hai
（College of Naval Architecture and Power， Naval University of Engineering， Wuhan 430033， China）

Abstract：Aiming at surveillancing diesel engine and developing control algorithm for diesel engine，a DC motor was chosen as controlled ebject，owing to a similar mathematical model with diesel engine. Centering on NI cRIOs，a semi-physical simulation platform for diesel engine was built. PID control algorithm was initially adopted，and the simulation was implemented in three different LabVIEW environments. The monitor program was given under the application environment named field programmable gate array （FPGA） which costs the shortest responding time among the three environments. According to these tests，speed control of DC motor which functions as the simulation object for diesel engine is timely and accurate，and the result establishes a good foundation for further research on the control of diesel engine.
Key words： semi-physical simulation；diesel engine；DC motor；cRIO；PID；field programmable gate array （FPGA）