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Sine-wave decoding device and decoding method thereof

A technology of a decoding device and a decoding method, applied in the field of sine wave decoding devices, can solve the problems of loss of position information, inaccuracy of motor distance calculation, etc.

Inactive Publication Date: 2010-10-20
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Claims
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Problems solved by technology

In general, the distance of the motor rotation is determined by converting the sine wave into a pulse wave. Since the pulse wave only reflects the information at the vertex of the sine wave, the position information at any time between the two vertexes within this period of time When the sine wave is converted into a pulse wave, it will be lost, resulting in inaccurate determination of the motor rotation distance

Method used

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  • Sine-wave decoding device and decoding method thereof
  • Sine-wave decoding device and decoding method thereof
  • Sine-wave decoding device and decoding method thereof

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Embodiment Construction

[0021] Please refer to Figure 1 to Figure 5 A preferred embodiment of the sine wave decoding device of the present invention includes a converter 10 , an offset adjuster 20 , an amplitude adjuster 30 , a processor 40 , a display 50 , an encoder 60 and a conversion circuit 70 .

[0022] The converter 10 is connected between the encoder 60 and the offset adjuster 20 to obtain a first sine wave 620 and a second sine wave 621 output by the encoder 60 at each point amplitude, and transmit it to the offset regulator 20, wherein the phase difference between the first and second sine waves 620 and 621 is 90 degrees.

[0023] The offset regulator 20 is used to adjust the geometric centerlines of the first sine wave 620 and the second sine wave 621 to the same horizontal line, and according to the amplitude of the first and second sine waves 620 and 621 at each point Values ​​are constructed as image 3 As shown in the coordinate axis, the abscissa of the coordinate axis is the ampli...

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Abstract

The invention relates to a sine-wave decoding device which comprises a converter and a processor, wherein the converter is connected between an encoder and the processor to obtain the amplitude value of each point thereof by passing two sine waves output by the encoder through the converter, and the position difference between any two points can be calculated by passing the amplitude values through a section judging unit, a data processing unit and a position recording calculating unit in the processor. The sine-wave decoding device of the invention determines the information of each point on the two sine waves so as to accurately calculate the position difference between any two points. The invention also provides a sine-wave decoding method.

Description

technical field [0001] The invention relates to a sine wave decoding device and a decoding method thereof. Background technique [0002] General encoders are divided into incremental encoders and absolute encoders, wherein the signal output by the incremental encoder is a TTL digital pulse signal, and the signal output by the absolute encoder is a Sin wave signal or a Cos wave Signal. When an absolute encoder is connected to a motor, the distance the motor rotates within a certain period of time is determined by the position difference between two moments of the sine wave output by the encoder. This requires decoding the sine wave at two instants. In general, the distance of the motor rotation is determined by converting the sine wave into a pulse wave. Since the pulse wave only reflects the information at the vertex of the sine wave, the position information at any time between the two vertexes within this period of time It will be lost when the sine wave is converted in...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/00
CPCG01D5/2448
Inventor 洪荣聪洪荣煌陈信安林佑任陈世章赖幼仙
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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