High precision absolute encoder

An absolute encoder, high-precision technology, applied in the direction of mitigating unwanted effects, can solve the problems of poor installation and coordination accuracy, complex calculation process that cannot meet high-speed, high-precision miniaturization, and high cost, and achieve wide temperature range Adaptable range, strong dust resistance, high precision effect

Active Publication Date: 2012-06-20
ADTECH SHENZHEN TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the encoder structure uses three gears installed side by side, and each gear is equipped with two magnetic flux detection elements. The installation and coordination accuracy is not guaranteed, the cost is high, and the calculation process is complicated and cannot meet the high-speed, high-precision and small size of modern industrial production. needs

Method used

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Embodiment Construction

[0017] The high-precision absolute encoder provided by the present invention will be further described below in conjunction with the drawings and preferred embodiments.

[0018] figure 1 It is a schematic diagram of the internal structure of the high-precision absolute encoder of the present invention. In this embodiment, the wheel whose radius changes with the angle is a wheel whose radius changes linearly with the angle, and the gear is a trapezoidal gear. The encoder mainly includes a wheel 1 used to determine the absolute position of the motor whose radius changes linearly with the angle, a gear 2 used to determine the direction of motor rotation and the precise position of the motor, three position sensors 3, 4, and 5, one for The integrated circuit board 6 for processing the output signal of the sensor, the shaft sleeve 7 and the encoder housing.

[0019] The wheel 1 and the gear 2 whose radius changes linearly with the angle are fixed on the sleeve 7 and can rotate together ...

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Abstract

The invention relates to a high precision absolute encoder. The encoder comprises a wheel of which the radius is changed with an angle, a gear, a group of position sensors, and an integrated circuit board used for processing output signals of the sensors, wherein the wheel of which the radius is changed with the angle and the gear are connected coaxially; the position sensors are positioned on the outer side of the circumference of the wheel of which the radius is changed with the angle, and are electrically connected with the integrated circuit board used for processing the output signals of the sensors; and the integrated circuit board used for processing the output signals of the sensors also can comprise a counter for calculating the rotating cycles of the encoder. Compared with the common photoelectric encoder, the high precision absolute encoder with the structure has the advantages of high accuracy, and wide tolerable working temperature range.

Description

Technical field [0001] The invention relates to a high-precision absolute encoder, which is mainly applied to occasions requiring precise positioning in the industrial automation field, and is especially suitable for the position feedback of a servo motor. Background technique [0002] The absolute encoder equipped with the servo motor is usually a photoelectric encoder, and its structure includes LED, photoelectric code disc, receiving device and integrated control circuit. The price of photoelectric encoder is high, and its application requires high external environment, and cannot withstand harsh conditions such as high temperature, dust, oil, and vibration. [0003] Patent: 201010557782.0 The absolute encoder described by 201010557782.0 adopts a gear structure, which improves the resolution in the case of miniaturization. However, the encoder structure uses three gears to be installed side by side, and each gear is equipped with two magnetic flux detection elements. Its instal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D3/028
Inventor 曾逸符艳君郭洋
Owner ADTECH SHENZHEN TECH
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