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Method for diagnosing fault of automatic ammunition supply and transportation device

A technology for fault diagnosis and ammunition supply and delivery. It is applied in the direction of measuring devices, ammunition supply, and weapon accessories. It can solve problems such as stuck and stopped shooting, poor movement, etc., and achieve the effect of improving time-frequency resolution.

Active Publication Date: 2012-06-20
ZHONGBEI UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

In the process of rapid supply and delivery of ammunition, due to manufacturing errors and harsh working conditions, various moving parts are prone to poor movement and jamming failures

Method used

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  • Method for diagnosing fault of automatic ammunition supply and transportation device
  • Method for diagnosing fault of automatic ammunition supply and transportation device
  • Method for diagnosing fault of automatic ammunition supply and transportation device

Examples

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Embodiment Construction

[0025] Based on the current analysis theory and the mechanism motion cycle diagram of the automatic bomb feeding device (reference Picture 11 ), to measure the current of the pusher and the angle, angular velocity, and angular acceleration of the ammunition (munition) coordination arm during the action of the automatic ammunition supply and transport device, and analyze and process various data. Use appropriate time domain and frequency domain analysis and processing methods, such as Information entropy, wavelet packet decomposition, etc., extracting various time domain and frequency domain features, combined with the diagnosis method with expert rules, can separate the action state of the automatic bomb feeding device and predict the failure. Wavelet packet decomposition can also be used to extract energy and information entropy characteristics of multiple frequency bands for motion and shock response signals, and then use the proportional gradient conjugate momentum algorithm ...

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Abstract

The invention discloses a method for diagnosing a fault of an automatic ammunition supply and transportation device, and aims to realize low maintenance cost and short period. The method comprises the following steps of: arranging measurement points on the large-aperture artillery automatic ammunition supply and transportation device, and selecting driving current of an ammunition supply motor and a hydraulic oil source motor as the measurement points according to a driving mode supplied by an automatic ammunition supply and transportation motion cyclic graph; simultaneously acquiring and recording angular displacement signals and angular speed signals of a rotary ammunition cabin, a coordination arm, a turning mechanism and an ammunition transportation mechanism as well as load current change signals of driving motors by a portable signal acquirer; performing signal data correction work of baseline drift correction and wild point removal on the acquired and recorded angular motion signals and current change signals; performing time domain analysis on an acquired acceleration impact signal and an acquired current impact signal, and making an amplitude probability density and probability distribution curve; and performing short-time-frequency characteristic extraction and small sample signal analysis on an impact response signal, analyzing a wavelet energy spectrum, and supplying peak values and frequencies in a frequency domain, and energy and entropy of each frequency band.

Description

Technical field [0001] The invention relates to a fault diagnosis method for analyzing angular motion parameters and load currents of a large-caliber artillery feeding and transporting device. Background technique [0002] The automatic feeding and transporting device of the large-caliber artillery is a high-speed moving electro-hydraulic integrated system, which requires high-precision electro-hydraulic coordination and matching. In the process of rapid supply and transport of ammunition, due to processing and manufacturing errors and poor working conditions, various moving parts are prone to poor movement and stuck and stop shooting failures. It is very necessary to study the high-speed action faults of various mechanisms in the automatic bomb feeding device, and to explore a fast and efficient early diagnosis technology for the automatic bomb feeding device failure based on the analysis of the angular motion parameters of the mechanism and the load current. Summary of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00F41A9/00
Inventor 潘宏侠潘铭志郭彦青赵润鹏
Owner ZHONGBEI UNIV
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