LOAD ESTIMATION METHOD, ESTIMATION DEVICE, AND COMPUTER PROGRAM

• Main Authors: YOSHIDA KOUYA, SUMASU HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 18.02.2022
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; MECHANICAL ENGINEERING; PHYSICS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; TESTING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a technique that can accurately determine an estimated value of radial load.SOLUTION: The present invention is a load estimation method for determining an estimated value of radial load acting on a rolling bearing 26 that supports an output shaft 12 mounted on a railway vehicle S, and includes: an estimated value acquisition step of determining the estimated value of the radial load based on output from a distortion sensor 32 provided on an outer ring 42; an inertial load acquisition step of determining the value of inertial load in a radial direction acting on the rolling bearing 26 according to the movement of the railway vehicle S based on output from a movement detection sensor 34 that detects the movement state of the railway vehicle S; and a correction step of correcting the estimated value by using the value of the inertial load.SELECTED DRAWING: Figure 6 【課題】ラジアル荷重の推定値を精度よく求めることができる技術を提供する。【解決手段】本発明は、鉄道車両Ｓに搭載された出力軸１２を支持する転がり軸受２６のラジアル荷重の推定値を求める荷重推定方法であり、外輪４２に設けられたひずみセンサ３２の出力に基づいてラジアル荷重の推定値を求める推定値取得工程と、鉄道車両Ｓの移動に応じて転がり軸受２６に作用するラジアル方向の慣性荷重の値を、鉄道車両Ｓの移動状態を検出する移動検出センサ３４の出力に基づいて求める慣性荷重取得工程と、慣性荷重の値を用いて推定値を補正する補正工程と、を含む。【選択図】 図６