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Harmonic absolute value encoder

An absolute value encoder and harmonic technology, applied in the encoder field, can solve the problems of complex structure and low accuracy of multi-turn encoders, improve aesthetics and human mechanical adaptability, extend distance, and avoid electromagnetic signal interference Effect

Active Publication Date: 2021-09-17
上海精传电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defects of complex structure and low precision of the multi-turn encoder in the prior art, the present invention proposes a harmonic absolute value encoder

Method used

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  • Harmonic absolute value encoder

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Embodiment Construction

[0025] A harmonic absolute value encoder proposed in this embodiment includes: a housing, a driving shaft 1 , a single-turn detection part 2 , a multi-turn detection part 3 and a harmonic gear part 4 .

[0026] The harmonic gear part 4 is arranged on the casing, the driving shaft 1 is rotatably arranged on the casing, and the driving shaft 1 is connected to the input shaft of the harmonic gear part 4 through transmission. Specifically, in this embodiment, the harmonic gear part 4 adopts a conventional structure, which is composed of a rigid wheel 41 , an elliptical bearing 42 and a flexible wheel 43 . The rigid wheel 41 of the harmonic gear part 4 is fixedly connected to the housing, the elliptical bearing 42 is used as the input shaft of the harmonic gear part 4 , and the flex spline 43 is used as the output shaft of the harmonic gear part 4 .

[0027] The single-turn detection part 2 includes a first rotating part 21 which rotates synchronously with the drive shaft 1 and a f...

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Abstract

A harmonic absolute value encoder comprises a housing, a driving shaft, a multi-ring detection part, a single-ring detection part and a harmonic gear part. The harmonic gear part is arranged on the housing, the driving shaft is rotationally arranged on the housing, and the driving shaft is in transmission connection with an input shaft of the harmonic gear part; the single-ring detection part comprises a first rotating part synchronously rotating with the driving shaft and a first PCB used for detecting the rotating angle of the first rotating part; the multi-ring detection part comprises a second rotating part synchronously rotating with the output shaft of the harmonic gear part and a second PCB used for detecting the rotating angle of the second rotating part. The number of turns recorded by the harmonic absolute value encoder provided by the invention is determined by the transmission ratio of the harmonic gear part, and the transmission ratio of the harmonic gear part is large, thereby facilitating simplification of transmission stages. Compared with a traditional multi-gear photoelectric encoder, the harmonic absolute value encoder is higher in precision, smaller in size and higher in installation and use environment adaptability.

Description

technical field [0001] The invention relates to the field of encoders, in particular to a harmonic absolute value encoder. Background technique [0002] Existing multi-turn absolute encoders use multi-stage gears and optical signals to record the number of turns of the main shaft. It is mainly composed of hollow gears and light emitting and receiving devices. [0003] The spindle registers the single-turn angle through the Hall principle. [0004] When recording multiple circles, use the combination of multi-stage gear pair transmission and photoelectric emitting board and photoelectric receiving board to read the pass and stop of the photoelectric signal through the through hole part and non-through hole part on the gear to determine the four quadrants of the gear. The position is used to calculate the number of revolutions of the drive shaft. Due to the limitation of the gear space, the first-stage gear can only record four revolutions. If more revolutions are recorded, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/14G01B7/30
CPCG01D5/145G01B7/30
Inventor 白宇陈康乐肖建方朱帅
Owner 上海精传电子科技有限公司
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