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Composite type absolute value encoder

An absolute value encoder and absolute value technology, which is applied in the direction of using electric/magnetic devices to transmit sensing components, can solve problems such as unstable resolution output, simplify calculation, improve resolution, and ensure accuracy and stability. Effect

Active Publication Date: 2014-08-13
上海精浦机电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the defect that the resolution of the composite absolute encoder in the prior art is easily affected by environmental factors and the output is unstable, a composite absolute encoder with high precision and stable output is provided

Method used

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Examples

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Embodiment

[0037] figure 2 It is a structural schematic diagram of a code wheel according to an embodiment of the present invention. The code wheel 21 is provided with a number of code slits 211, these code slits 211 form a code area, the center of the code wheel is provided with a round hole 212, and the code wheel 21 is also provided with a fully transparent area 213, using fully transparent glass material, the luminous flux will not change before and after the light passes through the fully transparent area 213, the shape of the fully transparent area 213 in this embodiment is similar to a ring, set in the circular hole 212 and the coding slit 211, but the code wheel of the present invention is not limited to setting the fully transparent area 213 between the circular hole 212 and the coding slit 211, the fully transparent The light area 213 can also be disposed on the outer circumference of the coding slit 211 .

[0038] image 3 It is a structural schematic diagram of the compos...

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Abstract

The invention discloses a composite type absolute value encoder which comprises a magnetoelectric absolute value encoding unit and a photoelectric increment encoding unit. A code wheel of the photoelectric increment encoding unit comprises a full-light-transmitting zone. The composite type absolute value encoder further comprises a photoelectric calibration unit and a data combination unit. The photoelectric calibration unit comprises a light transmitting part, a light shading part, a second photoelectric sensor and an adjusting circuit. The light transmitting part and the light shading part are provided with a plurality of second slots and third slots identical to first slots in an engraving mode. The second slots and the first slots are aligned. The third slots and the first slots are completely staggered. The input ends of the adjusting circuit are electrically connected with the first photoelectric sensor and the second photoelectric sensor respectively. The output end of the adjusting circuit is electrically connected with an increment encoding device. The composite type absolute value encoder can carry out accurate encoding, and accordingly the resolution ratio of the composite type absolute value encoder is improved.

Description

technical field [0001] The invention relates to a composite absolute encoder, in particular to an absolute encoder with a composite structure of a magnetoelectric absolute encoder unit and a photoelectric incremental encoder unit. Background technique [0002] In the existing precision machining and automation control fields, high-resolution absolute value encoders are required for high-precision measurement and control positioning of positions, including the measurement of position and speed of rotation angle, speed, and distance moved after transmission. , especially the resolution needs to meet the requirements of more than one thousandth of a degree (that is, the circumferential division degree of 360000, the division degree resolution requirement of more than 19 bits to the 19th power of about 2). For example, the multi-angle precise positioning of the turntable of the precision machining center, the high-precision positioning and speed control controlled by the servo m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/56
Inventor 裘奋
Owner 上海精浦机电有限公司
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