Title:
METHOD AND APPARATUS FOR DETECTING ABNORMALITY OF SECONDARY SPRING SYSTEM
Document Type and Number:
Japanese Patent JP2017144909
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for detecting abnormality of a secondary spring system or the like in which the abnormality can properly be detected even if a traveling speed is changed.SOLUTION: A method for detecting abnormality of a secondary spring system provided between a vehicle body 10 and trucks 20, 30 of a railway vehicle 1 is configured by: extracting a predetermined component of frequency bands B1, B2, B3 being set to be shifted to the high frequency substantially in proportion to a vehicle traveling speed from translational acceleration and rotational direction acceleration of the vehicle body; deciding that it is abnormal when a phase difference between the translational acceleration and the rotational direction acceleration extracted is deviated from a predetermined tolerance, and setting the frequency band to be extracted by making it different from the frequency at which the phase difference is inverted; and making it shift to the low frequency side in a stepwise manner so that the phase difference may exceed the frequency inverted when the traveling speed exceeds a preset extraction frequency change speed.SELECTED DRAWING: Figure 16
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Inventors:
KOJIMA TAKASHI
Application Number:
JP2016028741A
Publication Date:
August 24, 2017
Filing Date:
February 18, 2016
Export Citation:
Assignee:
RAILWAY TECHNICAL RES INST
International Classes:
B61F5/24; G01M17/08
Domestic Patent References:
| JP5662298B2 | 2015-01-28 | |||
| JP4252271B2 | 2009-04-08 | |||
| JP2000006807A | 2000-01-11 |
Foreign References:
| CN102607867A | 2012-07-25 |
Attorney, Agent or Firm:
Atsushi Watanabe
Hiroaki Inada
Hiroaki Inada