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The Design of a Vibration Testing System for Diesel Engine Based on LabVIEW

Author: WangZhiKai
Tutor: SongXiGeng
School: Dalian University of Technology
Course: Power Machinery and Engineering
Keywords: Vibration Virtual instrument Time domain analysis Spectrum analysis Pretreatment Zoom Spectrum
CLC: TK427
Type: Master's thesis
Year: 2010
Downloads: 214
Quote: 1
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Abstract


Diesel vibration signal of diesel engine fault symptoms information carrier , contains a wealth of information about the state of the diesel engine running . Effective measurement , processing and analysis of the diesel engine 's vibration signal is the basis of a correct understanding and timely detection of abnormal state of diesel engine fault diagnosis , and provides a basis for the diesel engine structure transformation and optimization design . The purpose of this project is based on the vibration signal acquisition and processing technology , combined with state-of-the-art virtual technology and computer technology in the Windows operating system environment , to develop a virtual instrument - based diesel engine vibration test and analysis system using virtual programming software Lab VIEW it easy on the actual site of the diesel engine vibration online real-time monitoring , data acquisition and data analysis , and data collected further time-domain analysis , frequency domain analysis . Firstly, the basic concept of the virtual instrument , vibration data acquisition and data analysis aspects of the knowledge to do a brief introduction , and then focuses on the based virtual instrument diesel engine vibration test and analysis system hardware design and software design . The hardware part of the test system as the core laptop also includes the acceleration sensor and the United States NI DAQCard6042 data acquisition card . In the software design process , the idea of using modular individually designed for each function module , and finally through the main program calls for each sub - function module to complete the integration of the entire program . This test can be convenient for on-site testing , to adapt to a variety of harsh testing environments addition able to complete a simple data acquisition and analysis , but also has a powerful pre-processing functions and spectrum zoom function call for pre-processing module can effectively improve the accuracy of the data processing , and can effectively improve the spectrum analysis resolution spectrum refinement module call . In order to verify the reliability and usefulness of the test system , the system for the MANB W 6S70MC-C type engine vibration measurement , and achieved good results .

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CLC: > Industrial Technology > Energy and Power Engineering > Internal combustion engine > Diesel engine > Run test
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