Accuracy Improvement of Braking Force via Deceleration Feedback Functions Applied to Braking Systems

Author:

Wang Yuzhu1ORCID,Wen Xiyuan1,Meng Hongfang1,Zhang Xiang1,Li Ruizhe2,Serra Roger3ORCID

Affiliation:

1. China Academy of Railway Sciences, Locomotive Car Research Institute, Beijing 100081, China

2. Intelligent Modelling and Analysis (IMA) Group, University of Nottingham, Nottingham NG7 2RD, UK

3. INSA Centre Val de Loire, LAMÉ, 41000 Blois, France

Abstract

Currently, braking control systems used in regional railways are open-loop systems, such as metro and tramways. Given that the performance of braking can be influenced by issues such as wheel sliding or the properties of the friction components present in brake systems, our study puts forward a novel closed-loop mechanism to autonomously stabilize braking performance. It is able to keep train deceleration close to the target values required by the braking control unit (BCU), especially in terms of the electrical–pneumatic braking transform process. This method fully considers the friction efficiency characteristics of brake pads and encompasses running tests using rolling stock. The test results show that the technique is able to stabilize the actual deceleration at a closer rate to the target deceleration than before and avoid wheel sliding protection (WSP) action, especially during low-speed periods.

Funder

Science Foundation of the Chinese Academy of Railway Sciences

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry

Reference16 articles.

1. Deceleration control by mechanical brake system for rolling stock;Nankyo;Japan Soc. Mech. Eng.,2002

2. Feedback control of braking deceleration on railway vehicle;Nankyo;J. Dyn. Syst. Meas. Control,2006

3. A Fuzzy Control for Train Automatic Stop Control A Fuzzy Control for Train Automatic Stop Control †;Yasunobu;Trans. Soc. Instrum. Control Eng.,2002

4. Deceleration-feedback braking force closed-loop control method for urban rail train;Ma;Yi Qi Yi Biao Xue Bao/Chin. J. Sci. Instrum.,2021

5. Train Braking Deceleration Control Based on Improved Smith Estimator;Zhou;J. Univ.,2020

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