Research And Implementation Of The Locomotive Adhesion Control Simulation Platform

In recent years, overloaded and high speed is the main development direction of China’s railway, and therefore requires greater traction. Locomotive traction mainly depends on the adhesion force between wheel and rail. Using wheel-rail adhesion effectively not only can improve the locomotive traction, utilize motor power effectively, but also enhance the safety and comfort of the locomotives However, the adhesion between wheel and rail is sensitive to environment conditions, often affected by many factors. A large number of engineering practice and research shows locomotive anti-slip system can effectively avoid the slip occurrence, restore adhesion force between wheel and rail and reduce the power loss of traction motor.Current adhesion control studies are usually based on a simplified mathematical locomotives model, but a variety of performance can not be accurately characterized because of complex model locomotives, particularly rail-wheel contact model. What is more, there is a big gap between simulation model and real controller.This paper builds HXD2C locomotive model by using multi-body dynamics simulation software Simpack, and traction motor and its control system with Matlab/Simulink software to construction virtual prototype simulation platform for adhesion control, which can establish a real locomotive model and simulate various road conditions.To solve the problem of algorithm transplant from simulation model to the physical platform, the Mathworks Company proposes Model-Based Design (MBS). Hardware code can be generated by Real Time Workshop Embedded Coder toolbox. DSP controller is added in the virtual prototype simulation loop to build Processor in the Loop (PIL) simulation platform.Finally a Data Acquisition Card joins in the simulation loop which plays as a data transmission channel to isolate DSP controller and simulation model. Programme the DSP data acquisition and filtering communication protocol, modify the adhesion control algorithm and transplant to DSP controller. Adhesion control hardware in the loop simulation platform is established based on DSP controller, locomotives model in Simpack and motor control model.Experiment and simulation results show that the virtual prototype simulation platform, PIL simulation platform and the hardware-in-the-loop simulation platform can reflect locomotives running states in the adhesion control situation, verify adhesion control algorithm, and accelerate the development process, the cost savings during the adhesion controller of research and development.