Signal processing method and system for incremental encoders
An incremental encoder and signal processing technology, applied in the direction of using optical devices to transmit sensing components, can solve the problems that the resolution of the incremental encoder cannot meet the system requirements, the hardware subdivision circuit integration is low, etc. Solve the effect of miniaturization and high resolution, high reliability and fast response speed
Inactive Publication Date: 2019-06-07
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
In some servo systems, due to the limitation of encoder volume, grating marking radius and other factors, the traditional hardware subdivision circuit integration is low, resulting in the resolution of the incremental encoder cannot meet the system requirements
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0037] like figure 1 As shown, a kind of incremental encoder signal processing system is provided for the present invention, and described system 2 comprises signal processing module 21, digital signal processor 22, programmable gate array 23, serial port chip 24 and display module 25; The signal processing module 21 is connected with a digital signal processor 22, and the digital signal processor 22 is connected with a programmable gate array 23, and the programmable gate array 23 is connected with a display module 25, and the digital signal processor 22 is connected with a serial por...
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The invention discloses a signal processing method and system for incremental encoders. The method comprises the following steps: a signal processing module receives a code disc signal of an incremental encoder, and amplifies and subdivides the code disc signal to obtain first data information; a digital signal processor receives the first data information, performs operation on the first data information to obtain second data information, and outputs the second data information through a serial chip; and a programmable gate array receives the second data information and transmits the second data information to a display module for display. The original code disc signal of the encoder is amplified and subdivided through an independent encoder signal processing module, and then the subdivided signals are directly output by the signal processing module. The circuit is simple, the response is fast, and the reliability is high. The contradiction between the miniaturization and high resolution of photoelectric encoders can be solved.
Description
technical field [0001] The invention relates to the field of photoelectric encoding signal processing, in particular to an incremental encoder signal processing method and system. Background technique [0002] Photoelectric precision tracking technology is a core technology in the field of national defense, and the tracking servo system is a key link. [0003] The basic principle of the photoelectric incremental encoder is to subdivide the Moiré fringe. The subdivision methods of Moiré fringes are optical subdivision, mechanical subdivision and electronic subdivision. Among them, the electronic subdivision method has the advantages of high precision and easy automation of measurement and data processing, so it has been widely used. Commonly used electronics subdivision methods include hardware subdivision and software subdivision. Software subdivision is to convert the photoelectric signal into a digital signal through the A / D converter, and then input the digital signal ...
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Inventor 刘畅李雪雷李建荣沈铖武蔡盛王志乾刘绍锦刘玉生马文家
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI