Technology of synchronized data acquisition in transmission fault diagnosis

doi:10.3778/j.issn.1002-8331.2010.09.006

Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (9): 16-18.DOI: 10.3778/j.issn.1002-8331.2010.09.006

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Technology of synchronized data acquisition in transmission fault diagnosis

ZHOU Xiao-feng^1，2，SHI Hai-bo¹，SHANG Wen-li¹

1.Shenyang Institute of Automation，Chinese Academy of Science，Shenyang 110016，China
2.Graduate School of Chinese Academy of Science，Beijing 100039，China

Received:2009-12-02 Revised:2010-01-25 Online:2010-03-21 Published:2010-03-21
Contact: ZHOU Xiao-feng

变速箱故障诊断中的同步数据采集技术研究

周晓锋^1，2，史海波¹，尚文利¹

1.中国科学院沈阳自动化研究所，沈阳 110016
2.中国科学院研究生院，北京 100039

通讯作者: 周晓锋

Abstract

Abstract: According to the requirements of the transmission fault diagnosis system’s real-time performance，an acquisition method that synchronizes the rotational speed signal and the vibration signal is proposed.It realizes uniform angular sampling when the shaft moves in variable motion.Different from existing methods，the method makes the rotational speed signal to be the master during the process of data acquisition for it can reduce the work of data processing and improve efficiency.The method is based on the DAQmx driver of National Instrument corporation（NI）and is implemented by VB language.

Key words: fault diagnosis, DAQmx, synchronous sampling, uniform angular sampling, vibration analysis

摘要： 根据汽车变速箱性能检测系统的实时性高的需要，提出了一种基于NI公司的DAQmx的多通道数据同步采集方法，实现了在变速运动下转速信号和振动信号的精确等角度同步采集。该方法以转速信号为主控，同以往的以振动信号做主控相比，可以更精确地按指定数据量完成采集任务，减少后期的数据处理工作，提高工作效率。该方法基于NI公司的DAQmx驱动，用VB语言实现，具有更好的兼容性和可扩展性。

关键词: 故障诊断, DAQmx, 同步采集, 等角度采样, 振动分析

CLC Number:

TP274

ZHOU Xiao-feng^1，2，SHI Hai-bo¹，SHANG Wen-li¹. Technology of synchronized data acquisition in transmission fault diagnosis[J]. Computer Engineering and Applications, 2010, 46(9): 16-18.

周晓锋^1，2，史海波¹，尚文利¹. 变速箱故障诊断中的同步数据采集技术研究[J]. 计算机工程与应用, 2010, 46(9): 16-18.

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Technology of synchronized data acquisition in transmission fault diagnosis

变速箱故障诊断中的同步数据采集技术研究

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