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A Method of Automatically Finding the Zero Position of Displacement Sensor

A displacement sensor and automatic search technology, which is applied in the direction of instruments, measuring devices, and electrical devices, can solve the problems of slow speed and inability to realize automation, and achieve the effects of eliminating the influence of human factors, improving work efficiency, and liberating human resources.

Active Publication Date: 2018-07-24
FLIGHT AUTOMATIC CONTROL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first step of the displacement sensor test is to find the zero position. At present, one method is to look at the voltmeter while shaking it on the manual test bench. The zero-finding speed is okay. The subsequent tests are all manual tests. The test speed is very slow and cannot be automated. ;Another method is to use different steps or speeds to approach gradually on the automatic test bench, the speed is very slow, and the follow-up test can be automated, which can only be regarded as semi-automatic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] For a certain type of angular displacement sensor, the zero voltage requirement is less than 0.02V, and the polarity requirement is, starting from the zero position, when the sensor rotor rotates clockwise, the output voltage is in the same phase as the input voltage, that is, the output voltage of the synchronous acquisition card is positive, On the contrary, it is negative, and the proportional coefficient is 0.125V / °.

[0027] Install the sensor on the precision test bench, connect the sine wave power supply and NI's PXI-6132 multi-function data acquisition card, and run the measurement and control program written in labview on the computer;

[0028] The polarity of the signal collected by the PXI-6132 is judged and the amplitude of the single-frequency signal is extracted and converted into an effective value and converted into an effective value to obtain the output voltage. The polarity judgment processes the signal through the measurement and control software, an...

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Abstract

The invention is a fast and automatic zero-finding method for a displacement sensor with AC input and output. The technical scheme adopted by the present invention is: use the measurement and control software written by labview, collect sensor data through the data acquisition board, and then control the precision test bench to quickly and automatically find the zero position of the sensor. The invention realizes the automatic search for the zero position of the sensor, and greatly improves the working efficiency of the sensor test.

Description

technical field [0001] The invention relates to a method for quickly finding the zero position of an AC input and output sensor with positive and negative strokes. Background technique [0002] With the continuous improvement and development of aviation product technology, displacement sensor products as system information feedback have been widely used. The first step of the displacement sensor test is to find the zero position. At present, one method is to look at the voltmeter while shaking it on the manual test bench. The zero-finding speed is okay. The subsequent tests are all manual tests. The test speed is very slow and cannot be automated. Another method is to use different steps or speeds to approach gradually on the automatic test bench. The speed is very slow, and the follow-up test can be automated, which can only be regarded as semi-automatic. Contents of the invention [0003] Purpose of the invention [0004] A method to quickly and automatically find the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/02
Inventor 赵琦
Owner FLIGHT AUTOMATIC CONTROL RES INST