The Research And Development Of Hardware In The Loop Test Platform Of The Controller Based On Simulink Real Time

As a new type of powertrain system in the field of new energy vehicles,the development of range extender has great significance for the energy-saving and environmental protection of vehicles.The range extender controller is the core of the entire range extender control and controls the stable operation of the range extender under different working conditions.By optimizing the control strategy,function improvement and calibration of the range extender,the working noise of the range extender can be reduced,and the fuel consumption and exhaust emissions of the range extender can be reduced.The hardware-in-the-loop test platform provides a closed-loop test platform that combines software and hardware for the optimization of range extender control strategy,complete functions,and calibration.The hardware-in-the-loop test platform test can more accurately verify the functions of the controller during the development process and discover problems in a timely manner,thereby speeding up the development of the controller and saving the development cost of the controller.There is little research on range extenders at home and abroad.The progress of range extender controller research and development is relatively slow,and there is a lack of hardware-in-the-loop test platforms for range extender controllers.This topic addresses the shortcomings of current range extender controller hardware research,especially the problems of inaccurate range extender model establishment and high platform development costs.A hardware-in-the-loop test platform suitable for range extender controllers is developed.This subject takes the self-developed range extender controller as the research object of the hardware-in-the-loop test platform,and studies the current simulation platform of the engine controller at home and abroad,and combines with the characteristics of its own research object range extender controller A hardware-in-the-loop test platform design scheme for range extender controller based on Simulink Real-Time suitable for range extender controller is presented.In response to the problem that the Simulink Real-Time platform failed to provide the required third-party drivers,the board driver design under the Simulink Real-Time environment was completed.Aiming at the problem of electrical signal mismatch between platform software and hardware system,the hardware signal interface circuit and software model required by the platform are designed to realize the signal interaction between the basic platform and the software platform.In view of the lack of incompleteness and inaccuracy of the existing range extender software model,the physical model plus the control model is used to model Simulink to meet the software requirements of the range extender controller.Aiming at the problem of inflexible and low efficiency in the development of upper computer monitoring software provided by the platform,the C#language development is adopted to make the upper computer development more flexible and convenient.The unit and integration tests of the basic platform board driver and signal interface system were completed,and the entire range extender model was tested separately for the motor module and engine module and the overall performance test of the range extender.Finally,it is verified that the range extender model system has small errors with the bench in terms of steady state and transient response,which ensures the accuracy of the design of the entire range extender controller hardware in the loop test platform and meets its functional and performance requirements.The overall design of the platform meets the testing requirements of the range extender controller.