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Digital angle converter implementation method

An implementation method and converter technology, applied in the direction of digital function generators, etc., can solve problems such as rising prices, unusable design boards, and high prices, and achieve the effect of reducing costs

Inactive Publication Date: 2009-12-30
CHINA AEROSPACE TIMES ELECTRONICS CORP NO 771 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] These chips are hybrid packaging circuits, expensive and subject to foreign
Around 1999, due to the discontinuation of DRC chips, the shortage of supply (difficult to buy) and the rise of prices (about 13,450 yuan per chip) made the original design boards unusable, so they had to replace the devices and design them separately, or they needed to be replaced. Waiting for a long procurement cycle and unilaterally accepting expensive unit prices

Method used

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Embodiment Construction

[0017] According to the method of the present invention, the realization of digital angle converter comprises the following steps:

[0018] ① Circuit structure

[0019] Its circuit block diagram is as figure 1 shown. According to the analysis to the DRC chip principle, in conjunction with the development of digital signal processing technology, the DRC circuit of the present invention is made of the following several parts:

[0020] The photocoupler connected with the DA converter, the photocoupler is connected to the first DA converter and the second DA converter, the first DA converter is connected to the sine multiplier, the second DA converter is connected to the cosine multiplier, and the sine The multiplier and the cosine multiplier are respectively connected with a sine voltage boosting and driving circuit and a cosine voltage boosting and driving circuit, wherein the sine multiplier and the cosine multiplier are connected with a sine wave generator as a reference sig...

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Abstract

The invention relates to a method for realizing a digit angle converter circuit, composed of a photoelectric coupler, two DA converters, a sine multiplier, a cosine multiplier, a voltage boost and drive circuit, a sine wave generator, an angle and analogue digit amount convert control circuit, and an angle data register. The angle and analogue digit amount convert control circuit detects the data change of the data register, to calculate out the digit amounts relative to Sin(theta) and Cos(theta) according to the angle amount theta of new data when the angle data register is written with new data, the two DA converts convert the Sin(theta) and Cos(theta) digit amounts to relative analogue amounts, to be multiplied with a reference signal, and automatically recognize the input data signal after conversation, to repeat aforementioned process. The invention uses general elements to realize the function and main technical indexes of DRC chip, with reduced cost.

Description

technical field [0001] The invention belongs to the technical field of computer application, and in particular relates to a realization method of a digital angle converter (DRC). Background technique [0002] For many years, DRC converters have been implemented using dedicated DRC chips. Commonly used DRC chips include AD2S65 / 66 and DRC1745 / 1746 from American AD Company. [0003] These chips are hybrid packaged circuits, which are expensive and controlled by foreign countries. Around 1999, due to the discontinuation of DRC chips, the shortage of supply (difficult to buy) and the rise of prices (about 13,450 yuan per chip) made the original design boards unusable, so they had to replace the devices and design them separately, or they needed to be replaced. Waiting for a long procurement cycle and unilaterally accepting expensive unit prices. Contents of the invention [0004] The object of the present invention is to provide a method for implementing a digital angle conv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/02
Inventor 杨军一
Owner CHINA AEROSPACE TIMES ELECTRONICS CORP NO 771 RES INST