Model-Based Pneumatic Braking Force Control for the Emergency Braking System of Tractor-Semitrailer

2018-01-0824

04/03/2018

Features
Event
WCX World Congress Experience
Authors Abstract
Content
As bottom layer actuator for the AEB system, the active brake system and the brake force control of tractor-semitrailer have been the hot topics recently. In this paper, a set of active pneumatic brake system was designed based on the traditional brake system of tractor-semitrailer, which can realize the active brake of the vehicle under necessary conditions. Then, a precise mathematical model of the active pneumatic brake system was built by referring the flow characteristics of the solenoid valve, and some tests were implemented to verify the accuracy and validity of the active brake system model. Based on the model, an active pneumatic brake pressure control strategy combining the feedforward and feedback controlling modes was designed. By generating the PWM control signal, it can precisely control the desired wheel cylinder brake pressure of the active brake system. Finally, the brake pressure control strategy was validated both by simulation tests and bench tests. The tests’ results showed that the PWM control strategy for the active pneumatic brake system was both practical and reliable, and it can precisely control the brake pressure of the vehicle.
Meta TagsDetails
DOI
https://doi.org/10.4271/2018-01-0824
Pages
8
Citation
Zhu, B., Feng, Y., and Zhao, J., "Model-Based Pneumatic Braking Force Control for the Emergency Braking System of Tractor-Semitrailer," SAE Technical Paper 2018-01-0824, 2018, https://doi.org/10.4271/2018-01-0824.
Additional Details
Publisher
Published
Apr 3, 2018
Product Code
2018-01-0824
Content Type
Technical Paper
Language
English