04-07-2019 дата публикации
Номер: US20190203764A1
Принадлежит:
A sensorized roller of a bearing, the roller having a central bore extending axially therethrough and a sensor module mounted within the bore in a non-fixed manner. The module includes at least four deformation sensors arranged circumferentially around a module center axis, at defined angular intervals. Each deformation sensor measures a radial distance (measured for defined angular positions lying within an angular span of 180° between the center axis and a radially inner bore surface. The module includes a processor which receives each measured radial distance and calculates a radial load (under static or dynamic conditions) acting on the roller by estimating an offset angle of the fixed reference relative to the radial load direction and by using the estimated offset angle and each measured radial distance as inputs to a mathematical model, describing a deformation radius of the bore as a function of angular position and load dependent parameters. 1. A sensorized roller of a bearing , the sensorized roller comprising:a central bore that extends in axial direction through the roller; and [{'b': 1', '2', '3', '4', '1', '2', '3', '4, 'at least four deformation sensors arranged circumferentially around a center axis of the sensor module, at defined angular intervals Pk relative to a fixed reference, whereby each deformation sensor is configured to measure a radial distance r, r, r, r between the center axis and a radially inner surface of the bore at the corresponding angular position, whereby the at least four radial distances r, r, r, r are measured for defined angular positions which lie within an angular span of 360 degrees; and'}, {'b': 1', '2', '3', '4, 'a processor which is configured to receive each of the measured radial distances and to calculate a radial load acting on the roller by estimating an offset angle φ of the fixed reference relative to the radial load direction, and by using the estimated offset angle φ and each measured radial distance r, r, r, ...
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