自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 25    No. 4    April 2018

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Method for secondary spring load equalization of railway vehicles with two-stage spring suspension: Modeling and optimal regulation
BAO Tian-zhe(鲍天哲)1, 2, HAN Kun(韩锟)1, PAN Di-fu(潘迪夫)1

1. School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China; 2. School of Electronic and Electrical Engineering, University of Leeds, Leeds, UK

Abstract:To ensure running safety, the secondary spring loads of railway vehicles must be well equalized. Due to the coupling interactive effects of these hyper static suspended structures, the equalization adjustment through shimming procedure is quite complex. Therefore, an effective and reliable method in application is developed in this paper. Firstly, the best regulation of spring load is solved based on a mechanical model of the secondary suspension system, providing a target for actual adjustment. To reveal the relationship between secondary spring load distribution and shim quantity sequence, a forecasting model is constructed and then modified experimentally with consideration of car body’s elastic deformation. Further, a gradient-based algorithm with a momentum operation is proposed for the load optimization. Effectiveness of the whole method has been verified on a test rig. It is experimentally confirmed that this research provides an important basis for achieving an optimal regulation of spring load distribution for multiple types of railway vehicles.

 

Key words: railway vehicle; secondary spring load equalization; optimal regulation; shimming procedure; elastic deformation

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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