Airborne hydraulic pump source fault diagnosis system based on DSP

A fault diagnosis system and hydraulic pump technology, applied in pump testing, mechanical equipment, machines/engines, etc., can solve the failure to meet the real-time and rapid fault diagnosis requirements, and the data acquisition card is bulky and cannot meet the fault diagnosis system Miniaturization and integration and other issues, to achieve the effect of fast computing speed, meet special requirements, and fast signal processing speed

Inactive Publication Date: 2009-11-18
BEIHANG UNIV
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  • Abstract
  • Description
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Problems solved by technology

The entire fault diagnosis process is separated, failing to meet the real-time and rapid requirements of fault diagnosis
In addition, due to th

Method used

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  • Airborne hydraulic pump source fault diagnosis system based on DSP
  • Airborne hydraulic pump source fault diagnosis system based on DSP
  • Airborne hydraulic pump source fault diagnosis system based on DSP

Examples

Experimental program
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Effect test

Embodiment

[0041] (1) Fault of increased plunger clearance

[0042] The plunger pump is the energy provider in the entire aircraft hydraulic system. To continuously complete the process of oil absorption and oil discharge, it mainly depends on the continuous reciprocating movement of the plunger.

[0043]There will be high-pressure oil between the plunger and the plunger hole of the cylinder body entering into the gap of the friction pair to produce a certain lubricating effect and prevent the occurrence of friction. During this process, the contact stress and friction will be applied between the plunger and the cylinder body. With the increase of working time or the pouring of pollutant particles, the plunger will be subject to different degrees of wear and tear. The diameter will also increase. At this time, the gap between the friction pair caused by fatigue wear increases, and the fault of the plunger clearance increases. The oil leaks through the gap orifice, which increases the oil...

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PUM

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Abstract

The invention discloses an airborne hydraulic pump source fault diagnosis system based on a DSP, comprising a data acquisition system, a signal conditioning system, a signal processing system, a host computer display system, a power supply system and a constant flow source module; wherein, the signal processing system consists of an A/D converting system and a DSP system; a DSP TMS 320F2812 chip is selected by a DSP data processing system, and fault diagnosis is carried out on an airplane pumping source system in the signal processing system, finally, the data mode and diagnosis results are transmitted into the host computer display system to be displayed by a CAN bus. The invention adopts the embedded DSP system with small volume and high reliability, adapts to flexibility requirement on the airplane and meets the special requirements of the airborne fault diagnosis system, thus improving the real-time property and accuracy of the fault diagnosis system.

Description

technical field [0001] The invention belongs to the technical field of fault diagnosis of aviation airborne hydraulic pumps, and in particular relates to a DSP-based airborne hydraulic pump source fault diagnosis system. Background technique [0002] With the increasing requirements for the mission attendance rate and combat readiness rate of combat aircraft in modern warfare, coupled with the rapid development of testing technology, signal processing technology and computer technology, at present, foreign advanced aircraft have adopted a complete health management system (PHM system) to achieve state Monitoring, fault diagnosis and life prediction, so as to effectively reduce the aircraft accident rate and save maintenance costs. [0003] The aviation hydraulic pump is the core component of the aircraft's hydraulic pump source system. It plays a very important role in the process of aircraft take-off, flight control, and landing. It provides high-pressure hydraulic oil to d...

Claims

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Application Information

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IPC IPC(8): F04B51/00
Inventor 王康王少萍杜隽赵四军
Owner BEIHANG UNIV
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