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Composite Absolute 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: 2016-05-11
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

Experimental program
Comparison scheme
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Embodiment

[0037] figure 2 It is a schematic diagram of the structure of the code disc in the embodiment of the present invention. The code disk 21 is provided with a number of coding slits 211, the coding slits 211 form a coding area, the center of the code disk is provided with a circular hole 212, and the code disk 21 is also provided with a fully transparent area 213. Using a fully transparent glass material, the luminous flux of light will not change before and after passing through the fully transparent region 213. The shape of the fully transparent region 213 of this embodiment is similar to a circular ring, which is arranged in the circular hole 212 and the encoding slit 211, but the code wheel of the present invention is not limited to providing the fully transparent area 213 between the circular hole 212 and the encoding slit 211, the fully transparent The light zone 213 can also be arranged on the outer circumference of the encoding slit 211.

[0038] image 3 It is a schematic...

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PUM

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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 value encoder, in particular to an absolute value encoder with a composite structure of a magnetoelectric absolute value encoding unit and a photoelectric incremental encoding unit. Background technique [0002] In the field of existing precision machining and automation control, high-precision position measurement and control positioning, including position and speed measurement such as rotation angle, speed, and distance moved after transmission, require a high-resolution absolute encoder , In particular, the resolution needs to meet the requirements of more than one thousandth of a degree (that is, 360000 circular divisions, about 2 to the 19th power of 19 bits or more division resolution requirements). For example, the multi-angle precision positioning of the turntable of the precision machining center, the high-precision positioning and speed control of the servo motor and the robot arm control, the smooth ...

Claims

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Application Information

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