Novel double-speed coarse and fine combination system for resolver-to-digital converter

A technology of digital converter and combination of rough and fine, which is applied in the direction of using electric/magnetic device to transmit sensing components, which can solve the problem that error correction processing cannot achieve miniaturization and high speed.

Active Publication Date: 2013-01-16
TIANSHUI 749 ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This invention provides a pure hardware circuit for encoding error correction processing to solve the problem that the error correction processing of coarse-fine combination system cannot realize miniaturization and high speed

Method used

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  • Novel double-speed coarse and fine combination system for resolver-to-digital converter
  • Novel double-speed coarse and fine combination system for resolver-to-digital converter
  • Novel double-speed coarse and fine combination system for resolver-to-digital converter

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0014] A novel two-speed shaft-angle-digital converter coarse-fine combination system, including a two-speed resolver transformer, coarse and fine shaft-angle digital converters, namely RDC, a three-state latch, and a digital output at the back end, which is composed of Enable the control terminal to control the output state of the effective bit data output; it also includes an error correction circuit; the signal transmission process of the novel two-speed shaft-angle digital converter coarse-fine combination system: the two-speed resolver transformer is directly input to the coarse-fine In the shaft-angle digital converter, the coarse and fine data are obtained separately, and when the coarse and fine data are combined through the speed ratio, the error correction of the coarse and fine data is realized through the error correction circuit, an...

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Abstract

The invention relates to a simple, quick and accurate method which is specially used for a double-speed coarse and fine combination system for a resolver-to-digital converter and realizes coding error correction by using a pure hardware circuit, in particular to a novel double-speed coarse and fine combination system for a resolver-to-digital converter. The novel double-speed coarse and fine combination system for the resolver-to-digital converter is characterized in that a double-speed rotary transformer directly inputs data to the coarse and fine resolver-to-digital converter (RDC), so that coarse data and fine data are respectively obtained; when the coarse data and the fine data are combined together by a velocity ratio, error correction of the coarse data and the fine data is realized through an error correction circuit, the error-corrected data are then combined with the fine data, and a digital output of the double-speed coarse and fine combination system of the resolver-to-digital converter is formed by three-state latching. During coarse and fine combination, an error correction problem is a key problem of the double-speed coarse and fine combination system for the resolver-to-digital converter. The error correction circuit realizes error correction of the coarse data and the fine data through a digital circuit, the error-corrected data are then combined with the fine data, the digital output of the double-speed coarse and fine combination system for the resolver-to-digital converter is formed by the three-state latching, and an enable control end controls the output state of an effective bit data output.

Description

technical field [0001] The invention relates to the technical field of shaft-angle digital converters, in particular to a coarse-fine combination system of a double-speed shaft-angle digital converter. Background technique [0002] The axis angle digital conversion circuit is widely used in high-precision numerical control systems, such as robot control, industrial control, weapon fire control and inertial navigation. With the improvement of the accuracy requirements of the numerical control system, the shaft angle test accuracy required by the system is getting higher and higher, so there is a dual-speed shaft angle digital conversion circuit. [0003] The design idea of ​​the double-speed shaft angle digital circuit is to use the coarse-fine combination method to connect two rotary transformers with the speed change mechanism. When the rotary transformer works between one rotary transformer and the measured shaft, the fine shaft drives the coarse The shaft turns. The id...

Claims

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Application Information

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IPC IPC(8): G01D5/12
Inventor 卢艳窦志源文绍光
Owner TIANSHUI 749 ELECTRONICS
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