Drivetrain model in loop simulation based on FMI standard
YAO Yi cheng, ZHOU Wen hua
(Power Machinery and Vehicular Engineering Institute, Zhejiang University, Hangzhou 310027, China)

Abstract: Aiming at implementing drivetrain model in the loop simulation, an off line virtual vehicle model was built in Simulink environment. The model consists of SimulationX drivetrain module and dSPACE ASM engine and vehicle dynamics module. All modules were parametrized according to extensive vehicle measurements. The clutch and shift control strategy were studied. The co simulation method that based on FMI standard was proposed and the step size of each co simulation module was discussed. The NEDC test was implemented on the vehicle model and the simulation results were compared to the test results from a real vehicle on the roller test bench. The results indicate that: the model in the loop simulation has a highly pragmatic value in the early phase of system verification and validation. This method is able to detect possible problems in vehicle systems and modify requirements in advance. This work prepares for the following hardware in the loop test.

Key words: DCT; model in the loop; SimulationX; Co Simulation; FMI