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Dual-channel rotary transformer decoding method and decoding circuit

A resolver and decoding method technology, which is applied in the field of dual-channel resolver decoding method and decoding circuit, can solve the problems of poor anti-interference ability, large volume, and inability to adapt to the real-time performance of the system.

Inactive Publication Date: 2020-10-09
XIAN BORUI JIXIN ELECTRONICS TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system is complex, large in size, poor in anti-interference ability, MCU handles serial work, and cannot meet the real-time requirements of the system

Method used

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  • Dual-channel rotary transformer decoding method and decoding circuit
  • Dual-channel rotary transformer decoding method and decoding circuit
  • Dual-channel rotary transformer decoding method and decoding circuit

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0035] It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

[0036] Such as figure 1 As shown, the present invention provides a dual-channel resolver decoding circuit, including: FPGA module 1, digital-to-analog conversion module (AD5621) 2, signal amplification and differential output module 3, dual-channel resolver 4, analog-to-digital conversion module (AD7609 ) 5, and communication interface output module 6 (RS422); Described FPGA module 1 is connected with described digital-to-analog conversion module 2 and analog-to-digital conversion module 5; Described digital-to-analog conversion module 2 is connected with signal amplification and...

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Abstract

The invention discloses a dual-channel rotary transformer decoding circuit which comprises an FPGA module, a digital-to-analog conversion module, a signal amplification and differential output module,a dual-channel rotary transformer, an analog-to-digital conversion module and a communication interface output module. The method can be applied to various types of rotary transformers through a communication interface, high-precision ADCs are used for sampling signals of the rotary transformers, 18 times of iteration is carried out through an optimized CORDIC algorithm, the angles of the coarseand fine rotary transformers are processed, and high-precision angle measurement of 0-360 degrees is achieved.

Description

technical field [0001] The present invention relates to the field of electronic control, in particular to a dual-channel resolver decoding method and a decoding circuit. Background technique [0002] Resolvers are used in motion servo control systems for sensing and measuring angular position. Compared with optical encoders and magnetic encoders, resolvers have good vibration resistance, strong anti-interference ability, stable and reliable performance, and are suitable for various harsh environments. Widely used in military equipment such as aviation, aerospace, radar, tank fire control, etc., it can also be used in civilian servo control systems such as CNC machine tools and robots. [0003] A common existing solution is to use a device such as a crystal oscillator to generate an excitation signal, input it to the primary of the resolver, and then output it through the secondary coil of the resolver, and output it as an analog sine-cosine voltage signal containing angle i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/252
CPCG01D5/252
Inventor 李少阳
Owner XIAN BORUI JIXIN ELECTRONICS TECH
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