变速箱振动信号的测点定位与评价方法研究-计算机工程与应用.PDF

244 2012 ，48 （5） Computer Engineering and Applications 计算机工程与应用 变速箱振动信号的测点定位与评价方法研究 1，2 1 1 1 姚秀琴 ，彭 威 ，尚文利 ，史海波 1，2 1 1 1 YAO Xiuqin , PENG Wei , SHANG Wenli , SHI Haibo 1.中国科学院 沈阳自动化研究所 工业信息学重点实验室，沈阳 110016 2.中国科学院 研究生院，北京 100039 1.Key Lab of Industrial Informatics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China 2.Graduate University, Chinese Academy of Sciences, Beijing 100039, China YAO Xiuqin, PENG Wei, SHANG Wenli, et al. Research on measure locations and evaluation methods of vibration signals for transmission. Computer Engineering and Applications ，2012 ，48 （5 ）：244-248. Abstract ：In the experiments of the transmission fault diagnosis, the vibration signals are obtained from two different measure loca- tions by vibration sensor in the transmission body, and then the time-frequency domain eigenvalue is extracted from it to analyze and evaluate. Groups of samples collected at a fixed location are studied to reduce the measurement error. On this basis, multiple samples obtained on different locations are studied in detail. The results show that the fault characteristics contained in the vibration signals from different measure locations are different, so the best location can be chosen to better characterize various fault characteristics. It lays the foundation for fault diagnosis based on vibration signals and improves the accuracy of fault diagnosis. Key words ：transmission fault diagnosis; vibration sensor; measure locations; vibration signals; time-frequency domain eigenvalue 摘 要：在变速箱故障诊断实验中，通过振动传感器获取各工况下不同测点位置的箱体振动信号，从振动信号中提取时频域特征 值进行分析评价。对于某一固定位置多组采集样本进行了研究，以降低测量误差，在此基础上对不同位置处获取的多组采集样 本进行了详细研究。结果表明，不同测点位置获取的振动信号包含的故障特征是不同的，从而选取更能表征各种故障特征的最 佳位置，为基于振动信号的变速箱故障诊断奠定了基础，提高了诊断的准确性。 关键词：变速箱故障诊断；振动传感器；测点位置；振动信号；时频域特征值 DOI ：10.3778/j.issn. 1002-8331.2012.05.070 文章编号：1002-8331（2012 ）05-0244-05 文献标识码：A