WEAR ESTIMATION METHOD AND ESTIMATION DEVICE OF TROLLEY WIRE

Japanese Patent JP2016205945

A

PROBLEM TO BE SOLVED: To provide a method and a device for properly estimating wear to a measurement value having a large error.SOLUTION: A wear estimation device of a trolley wire uses an estimation device 20 to a measurement value row 10, estimates a valid estimation value and a wear ratio as transition of residual diameter, then outputs them as an estimation result 30. The estimation device 20 comprises: a residual diameter estimation part 21 for estimating the residual diameter by constituting and solving an optimization problem for minimizing an object function T=Σ(current wear ratio-previous wear ratio)+αΣ(estimation value-lower limit value), under two constrains that the wear ratio is equal to or higher than 0, and an estimation value of the residual diameter is equal to or higher than a lower limit value obtained by subtracting an error value ε from the measurement value of the residual diameter; and a wear ratio estimation part 22 for calculating the wear ratio based on the estimation value of the residual diameter, so that even when the measurement value is varied due to error, the valid estimation value and the wear ratio can be calculated.SELECTED DRAWING: Figure 1

HAYASHI TAKANORI
NIWAKAWA MAKOTO
TABAYASHI SEIJI

JP2015086405A

December 08, 2016

April 21, 2015

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MEIDENSHA ELECTRIC MFG CO LTD

G01B21/00; B60M1/28; G01B21/10

JP2003329431A	2003-11-19
JP2009014633A	2009-01-22

WO2011036728A1	2011-03-31
WO2014115902A1	2014-07-31

T.USUDA ETC.: "Prediction of Contact Wire Wear in High-speed Railways", 9TH WORLD CONGRESS ON RAILWAY RESEARCH, JPN7016001883, 22 May 2011 (2011-05-22), ISSN: 0003955445

Toshiro Mitsuishi
Mitsuishi Shunpei
Yasuyuki Tanaka
Hiroshi Matsumoto
Tetsuzo Yamada

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