One-dimensional rotation angle measuring device based on eddy current

One-dimensional rotation angle measuring device based on eddy current

The invention provides a one-dimensional rotation angle measuring device based on eddy current. The device comprises a fixed portion and a rotary portion, the fixed portion comprises an eddy current sensor, a sensor fixing frame and a base, and the rotary portion comprises a steering mirror and a sw...

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Hauptverfasser: KONG FANHUI, XIAO LILIANG
Format: Patent
Sprache:chi ; eng
Schlagworte:
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
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creator KONG FANHUI
XIAO LILIANG
description The invention provides a one-dimensional rotation angle measuring device based on eddy current. The device comprises a fixed portion and a rotary portion, the fixed portion comprises an eddy current sensor, a sensor fixing frame and a base, and the rotary portion comprises a steering mirror and a swinging piece; the swinging piece is fixedly connected with the steering mirror through a deep grooveball bearing, and the swinging piece swings with the rotation of the steering mirror; and the steering mirror is driven by a voice coil motor or a piezoelectric ceramic motor to form different rotation angles. In a rotation process of the steering mirror, the distance between the eddy current sensor and the swinging piece changes to form a pair of differential signals to change the inductance ofthe eddy current, so that the distance change and the angle change of the steering mirror are obtained by the inductance change, and the purpose of measuring the rotation angle is achieved. The anglemeasuring device provided b
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The device comprises a fixed portion and a rotary portion, the fixed portion comprises an eddy current sensor, a sensor fixing frame and a base, and the rotary portion comprises a steering mirror and a swinging piece; the swinging piece is fixedly connected with the steering mirror through a deep grooveball bearing, and the swinging piece swings with the rotation of the steering mirror; and the steering mirror is driven by a voice coil motor or a piezoelectric ceramic motor to form different rotation angles. In a rotation process of the steering mirror, the distance between the eddy current sensor and the swinging piece changes to form a pair of differential signals to change the inductance ofthe eddy current, so that the distance change and the angle change of the steering mirror are obtained by the inductance change, and the purpose of measuring the rotation angle is achieved. 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subjects MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
title One-dimensional rotation angle measuring device based on eddy current
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