Title:

**METHOD, DEVICE, AND PROGRAM FOR ESTIMATING DERAILMENT COEFFICIENT**

Document Type and Number:

WIPO Patent Application WO/2019/146503

Kind Code:

A1

Abstract:

In an estimation method according to the present invention: a first estimation formula is produced to estimate an outer rail derailment coefficient Q/P1 for a monitoring carriage 3 in a reference curvature segment 1; a second estimation formula is produced to estimate an outer rail derailment coefficient Q/P2 for a normal carriage 4 in the reference curvature segment; a third estimation formula is produced to estimate an outer rail derailment coefficient Q/P3 for the monitoring carriage in a normal curvature segment 2; a correction coefficient is produced for an explanatory variable of the second estimation formula, on the basis of the coefficient of the explanatory variable in the first estimation formula, the coefficient of the explanatory variable in the third estimation formula, or the like; the correction coefficient is added to the coefficient of the explanatory variable of the second estimation formula, thereby producing a fourth estimation formula for estimating an outer rail derailment coefficient Q/P4 for the normal carriage in the normal curvature segment; the wheel load and lateral pressure of the normal carriage are measured by a measurement device 11 in the reference curvature segment; and the calculated values, etc., calculated based on the above are inputted into the fourth estimation formula as explanatory variables and the outer rail derailment coefficient Q/P4 is estimated. A method is thereby provided with which it is possible to estimate the outer rail derailment coefficient of the normal carriage in the normal curvature segment.

Inventors:

IHO, Hiyori (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)

SHIMOKAWA, Yoshiyuki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)

KUBO, Nahomi (1-109, Shimaya 5-chome, Konohana-ku, Osaka-sh, Osaka 24, 〒5540024, JP)

SHIMOKAWA, Yoshiyuki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)

KUBO, Nahomi (1-109, Shimaya 5-chome, Konohana-ku, Osaka-sh, Osaka 24, 〒5540024, JP)

Application Number:

JP2019/001357

Publication Date:

August 01, 2019

Filing Date:

January 17, 2019

Export Citation:

Assignee:

NIPPON STEEL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)

International Classes:

*;*

**B61K9/08**

**B61K13/00**Attorney, Agent or Firm:

TAIYO, NAKAJIMA & KATO (3-17, Shinjuku 4-chome Shinjuku-k, Tokyo 22, 〒1600022, JP)

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