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Double speed angle-digital converter

A digital converter and shaft angle technology, which is applied in the direction of converting sensor output, instruments, measuring devices, etc., can solve the problems of high system cost, poor adjustability of speed ratio and conversion accuracy, etc.

Active Publication Date: 2006-08-30
连云港杰瑞电子有限公司
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AI Technical Summary

Problems solved by technology

High system cost, poor adjustability of speed ratio and conversion accuracy

Method used

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  • Double speed angle-digital converter
  • Double speed angle-digital converter
  • Double speed angle-digital converter

Examples

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0012] Embodiment, as shown in the figure, a kind of dual-speed shaft angle-digital converter, with DSP (Digital Signal Processor) chip 5 as the core processor, the excitation signal of the rotary transformer is connected to the DSP chip 5 through the synchronous signal generation circuit, The resolver signals of the coarse and fine channels are respectively connected to the DSP chip 5 through the signal adjustment circuits 2 and 3, and the resolver signals of the coarse and fine channels are respectively adjusted by step-down and translation to adapt to the voltage input range of the chip. After A / D conversion inside the chip, angle extraction and error correction combination are carried out, and then the binary digital quantity is output in parallel through the interface circuit 6 . The DSP chip 5 core processor includes first extracting the ...

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PUM

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Abstract

The invention relates to a double speed axial angle digital converter that uses DSP as central process unit. The process includes the following steps: the excitation signal of rotating transformer accessing to DSP through synchronizing signal generating circuit, and the rotating transformer signal of raw and fined channels accessing to DSP through signal adjusting circuit, the DSP first gaining compounding axial angle location and speed, and realizing digital quantity output through interface circuit after taking angle error correction and combining, the random dither signal generated by DSP would be accessed to signal adjusting circuit through filtering circuit and rotating transformer. The speed ratio and converting accuracy could be adjusted. The whole converting process could be realized by software arithmetic. Thus, it could not only reduce hardware circuit, lower cost, but also could adjust diameter by software and improve adaptability.

Description

technical field [0001] The invention belongs to the field of industrial control, in particular to a dual-speed shaft angle-to-digital converter which can be used to realize the measurement and digital output of the angular position and angular velocity of the dual-speed shaft. Background technique [0002] Shaft angle-to-digital converter is an analog-to-digital conversion interface used to measure angular displacement and angular velocity. It is the basic component to achieve high-precision angular position measurement. It is widely used in servo systems such as CNC machine tools, mechanical equipment, robots, radars, and artillery. middle. At present, a single-chip resolver-digital converter (RDC) has been introduced abroad. The existing two-speed shaft angle conversion scheme uses two sets of RDC circuits and a two-speed processor circuit combined, and the whole process is realized by hardware. The system cost is high, and the speed ratio and conve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/30G01D5/245G05D3/00G05D3/12
Inventor 徐大林程颖陈建华李云飞
Owner 连云港杰瑞电子有限公司
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