Title:
CONTACT PHASE DETECTION METHOD, ATTACK ANGLE MEASUREMENT METHOD, CONTACT PHASE DETECTION DEVICE, AND ATTACK ANGLE MEASUREMENT DEVICE
Document Type and Number:
Japanese Patent JP2021036222
Kind Code:
A
Abstract:
To provide a contact phase detection method capable of accurately detecting a contact phase while suppressing an arithmetic load.SOLUTION: A contact phase detection method detects a contact phase Φ0 that is a phase of a contact point of a wheel 110 of a railway vehicle 1 rolling on a rail R with a rail, and is configured such that an output fluctuation history corresponding to one rotation of the wheel of wheel weight bridge circuits p1, p2 that are constituted by sequentially connecting a plurality of strain gauges provided with the wheel and generate an output corresponding to wheel weight is approximated by Fourier series, and a contact phase is obtained based on an odd number of Fourier coefficients of three or higher order.SELECTED DRAWING: Figure 13
Inventors:
HONDO TAKATOSHI
Application Number:
JP2019158175A
Publication Date:
March 04, 2021
Filing Date:
August 30, 2019
Export Citation:
Assignee:
RAILWAY TECHNICAL RES INST
International Classes:
G01B7/30; B61K9/12; B61K13/00
Attorney, Agent or Firm:
Atsushi Watanabe
Hiroaki Inada
Hiroaki Inada