Design of experimental platform for urban rail vahicle braking system

Stopping accuracy is a significant guarantee of the safety of the train's operation. It is mainly impacted by the performance of the electric-pneumatic braking system and the control mode of the braking system. In this paper, the braking deceleration control mode is adopted and a braking model of the urban rail vehicle reflecting the principle of the electric-pneumatic braking system is derived. Dynamic characteristics of the deceleration and dead time of the system are also considered in this model. Furthermore, the impact of the dead time is also analyzed in this work. Based on this nonminimum phase system, a conventional PID controller with the Smith predictor is proposed to control the deceleration of the vehicle. Simulation results verify that this method not only tracks the reference breaking deceleration but also effectively improves the stability of the braking system and the comfort level of the urban rail vehicle.

Download Full-text

Development of Automotive Electronics HIL Simulation Experimental Platform

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.44-47.1893 ◽

2010 ◽

Vol 44-47 ◽

pp. 1893-1897

Author(s):

Jing Lian ◽

Ya Fu Zhou ◽

Teng Ma ◽

Xiao Yong Shen

Keyword(s):

Low Cost ◽

Automatic Transmission ◽

Simulation Models ◽

Simulation Platform ◽

Automotive Electronics ◽

Experimental Platform ◽

Braking System ◽

Reliable Solution ◽

Hardware In Loop ◽

Hil Simulation

This paper presents a low-cost, simple and reliable solution for automotive electronics Hardware-In-Loop (HIL) simulation, taking Jetta AT1.6 car as object, designs and develops automotive electronics HIL simulation platform. Firstly, the overall structure of the platform is designed; secondly, system hardware platform is developed and built using Protel DXP; then, HIL simulation models of ABS (Anti-lock Braking System), engine and automatic transmission are built using Matlab/Simulink and develop automotive electronics HIL simulation platform; finally, carry on the experiment and the results show that the designed HIL simulation experimental platform is good. The platform has widespread applicability in the teaching experiments and the aspects of developing, debugging and testing of automotive electronics control systems.

Download Full-text