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Multipole combined-type magnetic encoder

A magnetic encoder and composite technology, applied in the field of encoders, can solve the problems of troublesome assembly, unfavorable maintenance, poor versatility, etc., and achieve the effects of simple configuration, convenient miniaturization, and simple and reliable installation.

Inactive Publication Date: 2011-08-24
JIANGSU SIWOTER ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the assembly is troublesome, it is not conducive to maintenance, and the versatility is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1, assuming that the applied rated speed is 9000rpm, and the resolution of the magnetic encoder is 1000ppr: then P=25, n can be calculated according to the formula (1)-(3) MAX =12000RPM, R=9.55mm. It can be seen from the above data that the detection radius of the signal processor is 9.55mm, and the radius of the signal processor 4 is slightly larger than 9.55mm. In addition to the size of the housing, the radial dimension of the encoder will not exceed 15mm.

Embodiment 2

[0044] Embodiment 2. It is used in a 750W general-purpose servo motor. The general indicators are: the maximum speed is 5000rpm, and the required resolution is 2000ppr. Obtain according to formula (1)-(3): P=50, n MAX = 6000 RMP, R = 19.1mm. It can be seen from the above data that the detection radius of the signal processor is 19.1mm, so the radius of the signal processor is slightly larger than 19.1mm, plus the size of the housing, the radial dimension of the encoder will not exceed 25mm.

[0045] According to the above calculation index, it can be seen that the magnetic encoder of the present invention has the advantages of small size, fast response and high resolution.

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Abstract

The invention discloses a multipole combined-type magnetic encoder which comprises a multipole combined-type magnetic grid and a signal processor, wherein the multipole combined-type magnetic grid is arranged in a shell and used for synchronously rotating along with a motor shaft, and three different magnetic fields are respectively generated on the multipole combined-type magnetic grid; and the signal processor is arranged in the shell and used for detecting a magnetic signal generated on the multipole combined-type magnetic grid, then converting the magnetic signal into high-resolution incremental-type A, B, Z electric signals and low-resolution absolute-type U, V, W electric signals and outputting . The multipole combined-type magnetic encoder has the advantages of high speed, small size and high resolution.

Description

technical field [0001] The invention relates to the technical field of encoders, in particular to a multi-pole composite magnetic encoder. Background technique [0002] With the development of motion control system, the transformation of DC motor to AC motor and the transformation of analog control to digital control are inseparable from encoders. The technical level of encoders directly affects the performance of motion control systems. As a kind of angular displacement sensor that converts the rotational angular position and angular velocity into electrical signals, there are many types, which can be divided into two categories: analog type and digital type according to the form of output electrical signal. Analog sensors include synchros, tachogenerators, etc., and digital sensors include optical encoders, magnetic encoders, etc. [0003] At present, digital photoelectric encoders are widely used in industrial production, the technology is very mature, and the accuracy a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/12
Inventor 徐殿国阮正亚贵献国杨明吴浩
Owner JIANGSU SIWOTER ELECTRIC
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