Readhead control mechanism and optical encoder

Readhead control mechanism and optical encoder

A deadhead control mechanism (400) serves to control a readhead (320) included in an optical encoder (300) that is adapted to measure a mechanical displacement between a fixed portion (100) and a movable portion (200) by reading out a gradation mark on a scale (310) provided on the fixed portion (10...

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Hauptverfasser: Itoh, Noboru, Ezaki, Yutaka
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS
MEASURING
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
PHYSICS
TARIFF METERING APPARATUS
TESTING
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creator Itoh, Noboru
Ezaki, Yutaka
description A deadhead control mechanism (400) serves to control a readhead (320) included in an optical encoder (300) that is adapted to measure a mechanical displacement between a fixed portion (100) and a movable portion (200) by reading out a gradation mark on a scale (310) provided on the fixed portion (100), by using the deadhead (320) that is provided on the movable portion (200). The readhead mechanism (400) includes a securing member (410) that secures the deadhead (320) onto the movable portion (200), an actuator (420) that is directly or indirectly secured onto the deadhead 320 to shift the deadhead (320) in an approaching direction or in a distancing direction, and an actuator controller (440) that is adapted to control the actuator (420) to maintain a constant distance between the readhead (320) and the scale (310).
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language eng ; fre ; ger
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subjects ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS
MEASURING
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
PHYSICS
TARIFF METERING APPARATUS
TESTING
title Readhead control mechanism and optical encoder
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