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High-precision full-parameter detection method for continuous motion

A detection method and high-precision technology, applied in the direction of using optical devices to transmit sensing components, etc., can solve problems such as low precision, poor practicability, and large investment, so as to improve detection accuracy, reduce delay deviation and average deviation , The effect of improving the position detection accuracy

Inactive Publication Date: 2010-11-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0012] The purpose of the present invention is to invent a high-precision timer based on a high-precision timer and an ordinary photoelectric High-precision full-parameter detection method for continuous motion of encoder

Method used

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  • High-precision full-parameter detection method for continuous motion
  • High-precision full-parameter detection method for continuous motion
  • High-precision full-parameter detection method for continuous motion

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Embodiment Construction

[0062] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0063] Such as figure 2 , 3 , 4 shown.

[0064] A continuous motion high-precision full-parameter detection method uses a photoelectric encoder as a basic detection element, and is equipped with a high-precision timer 1 and a detection cycle adjuster 2 as a timing tool for establishing a detection function and detecting the sampling time, wherein the detection cycle adjustment The device 2 can be realized by software or hardware circuit, and the high-precision calculation process of the specific motion position, speed and acceleration is as follows:

[0065] Such as figure 2 Shown:

[0066] The first step: basic position calculation. Use a reversible counter to count the pulse signal output by the photoelectric encoder. When the direction of movement is positive, perform addition counting. When the direction of movement is negative, perform subtr...

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Abstract

The invention provides a high-precision full-parameter detection method for continuous motion, in particular relates to a method for realizing high-precision comprehensive measurement of the position, speed and acceleration of continuous motion, belonging to the technical field of motion measurement. The invention aims to solve the technical problems of processing pulse signals output by a photoelectric encoder, improving the resolution of the encoder without changing the physical structure of the encoder, and realizing full-parameter high-precision detection. The technical scheme for solving the problems comprises the following steps: measuring and calculating the base position, measuring and calculating the speed, establishing a speed prediction function, measuring and calculating the precise position, measuring and calculating the instantaneous speed, measuring and calculating the acceleration, establishing an acceleration prediction function, and measuring and calculating the instantaneous acceleration. The invention carries out high-precision timing based on high-frequency clock counting and time-to-digit conversion technologies and adaptively adjusts the detection period to obtain the high-precision speed, thereby precisely measuring and calculating the position, the instantaneous speed and the acceleration by establishing the speed prediction function and the acceleration prediction function. The invention can be used for motion detection with low cost and high performance.

Description

technical field [0001] The invention relates to a motion parameter detection method, in particular to a high-precision detection method for continuous motion parameters such as position, speed and acceleration by using a photoelectric encoder, specifically a high-precision full-parameter detection method for continuous motion. Background technique [0002] At present, a photoelectric encoder (such as a grating ruler, a photoelectric encoder disk, etc.) is a device commonly used in motion detection to realize linear displacement or axial angular position detection. During the detection process, the pulse encoder digitally shapes the continuous sine / cosine analog signal obtained from the original detection, and then reflects the position change of the detected moving part in the form of output pulses. The number of output pulses is proportional to the position change. Proportional. Within a certain displacement range, the more the number of output pulses, the higher the resol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/36
Inventor 游有鹏罗福源
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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