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Analysis of the consistency of the Sperling index for rail vehicles based on different algorithms

Analysis of the consistency of the Sperling index for rail vehicles based on different algorithms
Analysis of the consistency of the Sperling index for rail vehicles based on different algorithms
Ride comfort indices are used to evaluate the vibration of rail vehicles and to measure the discomfort of passengers. Among the various ride comfort indices, the Sperling index is widely used in China and other countries. However, there are several different methods for determining the Sperling index from dynamic simulations and performance measurements of rail vehicles, and the results obtained by different algorithms are inconsistent.It is therefore difficult to make an accurate evaluation with the different calculation results. In this paper, a comparison is made between algorithms based on time domain and frequency domain analysis and using the second and third powers of the acceleration.The different algorithms are then summarized into a unified equation, and the consistency of the results is analyzed by this equation. It is found that only the r.m.s-based algorithm in the time or frequency domain is stable when analysis is carried out over different sample times. The time-frequency consistency of the r.m.s-based algorithms is verified by Parseval’s theorem and using calculation results from time domain simulations.
0042-3114
Deng, Chenxin
0d49bfa1-a58c-4580-b1db-5d38db26c61b
Zhou, Jinsong
5302ef52-fd22-4b4d-baa6-3c640dd17f17
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Gong, Dao
42222582-fc8e-4704-8369-829c6db7e289
Sun, Wenjing
a898a7c8-d750-4eec-86de-9b3725a68a20
Sun, Yu
c0065bc9-12a2-4777-91f2-30238b815d04
Deng, Chenxin
0d49bfa1-a58c-4580-b1db-5d38db26c61b
Zhou, Jinsong
5302ef52-fd22-4b4d-baa6-3c640dd17f17
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Gong, Dao
42222582-fc8e-4704-8369-829c6db7e289
Sun, Wenjing
a898a7c8-d750-4eec-86de-9b3725a68a20
Sun, Yu
c0065bc9-12a2-4777-91f2-30238b815d04

Deng, Chenxin, Zhou, Jinsong, Thompson, David, Gong, Dao, Sun, Wenjing and Sun, Yu (2019) Analysis of the consistency of the Sperling index for rail vehicles based on different algorithms. Vehicle System Dynamics. (doi:10.1080/00423114.2019.1677923).

Record type: Article

Abstract

Ride comfort indices are used to evaluate the vibration of rail vehicles and to measure the discomfort of passengers. Among the various ride comfort indices, the Sperling index is widely used in China and other countries. However, there are several different methods for determining the Sperling index from dynamic simulations and performance measurements of rail vehicles, and the results obtained by different algorithms are inconsistent.It is therefore difficult to make an accurate evaluation with the different calculation results. In this paper, a comparison is made between algorithms based on time domain and frequency domain analysis and using the second and third powers of the acceleration.The different algorithms are then summarized into a unified equation, and the consistency of the results is analyzed by this equation. It is found that only the r.m.s-based algorithm in the time or frequency domain is stable when analysis is carried out over different sample times. The time-frequency consistency of the r.m.s-based algorithms is verified by Parseval’s theorem and using calculation results from time domain simulations.

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Sperling-final - Accepted Manuscript
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More information

Accepted/In Press date: 28 September 2019
e-pub ahead of print date: 15 October 2019

Identifiers

Local EPrints ID: 434812
URI: http://eprints.soton.ac.uk/id/eprint/434812
ISSN: 0042-3114
PURE UUID: 4676768e-a1d8-4c95-8987-e9bc5055cb19
ORCID for David Thompson: ORCID iD orcid.org/0000-0002-7964-5906

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Date deposited: 10 Oct 2019 16:30
Last modified: 17 Mar 2024 02:44

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Contributors

Author: Chenxin Deng
Author: Jinsong Zhou
Author: David Thompson ORCID iD
Author: Dao Gong
Author: Wenjing Sun
Author: Yu Sun

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