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Test Bed System Study on Electro-hydraulic Servo Valve Characteristic Test Based on Virtual Instrument

Author: SongTao
Tutor: SongJinChun
School: Northeastern University
Course: Mechanical and Electronic Engineering
Keywords: electro-hydraulic servo valve virtual instruments compute-aided test static state characteristic test dynamic state characteristic test computer simulation
CLC: TH137.52
Type: Master's thesis
Year: 2006
Downloads: 226
Quote: 4
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Abstract


Electro-hydraulic servo valve is the key component of electro-hydraulic servo system, the test of its static and dynamic characteristic is significant in theories and test research of electro-hydraulic servo system. With the development of computer-aided test (CAT) technique, the test technique of electro-hydraulic servo valve has made a great progress, also gone up to a new high level with the appearance of virtual instruments technique.By combining virtual instruments technique with the test technique of electro-hydraulic servo valve, the test system of electro-hydraulic servo valve based on virtual instruments has been developed by the graphics software-LabVIEW. The test principle and method of electro-hydraulic servo valve were discussed in this dissertation.First, design and analyse the scheme of electro-hydraulic servo valve static and dynamic state characteristic test system. It mainly introduces the capability standard of electro-hydraulic servo valve static and dynamic state characteristic and it also tells the basic theory of test principle, data acquisition and signal processing. It pays more attention on dynamic state characteristic analysis and uses two different methods in frequency response test.Then, design the hardware configuration for test system. It mainly includes choosing computer, sensor device, signal adjusting device and data acquisition device and also designing the anti-jamming means for test system. It emphasizes the test technique of pressure, flux and leakiness.Next, design the software for test system. It mainly introduces to us one kind of software based on graphics-Lab VIEW which is faced to instrument and test process and provides a real method for test system. It successfully builds the electro-hydraulic servo valve CAT system by combining hardware and software.Finally, particularly analyse the main components of dynamic state characteristic test

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Hydraulic transmission > Hydraulic components > Hydraulic control valves
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