持续可变载荷条件下液压泵故障信号的多尺度形态滤波分析

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Abstract The method of mathematical morphology of the single-scale structural elements may not be effective for the filtering analysis on signals of the hydraulic pump under the variable loads. Because the amplitude of the vibration signal of the hydraulic pump will change with the loads of the hydraulic system, which affects the vibration characteristics of the signal. Based on the method of the single-scale morphological analysis, taking into consideration the length scale(time) and height scale(amplitude), the vibration signals of the pump were analyzed by multiscale morphological filter. Taking the impact feature ratio and second geometric moment as characteristic index, the composite evaluation system was constructed . And based on that, the optimization method of structural elements length scale and height scale was proposed. The fault simulation tests of the hydraulic pump under the variable loads were carried out, and the filtering effects of the multiscale morphological analysis algorithm for the three different signals, the hydraulic pump in normal state, single-piston slipper wear and the center spring failure, were checked. By comparison with the single-scale morphological filtering method, it was indicated that the multiscale morphological filtering method is more suited to handle the vibration signal under variable loads conditions.

Key words： Continuous variable loads Multiscale Morphological filtering Hydraulic pump

Received: 16 March 2015 Published: 15 July 2016

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	Articles by authors
	LIU Si-yuan1
	2
	WANG Chuang1
	2
	JIANG Wan-lu1
	2
	ZHANG Wen-wen2

Cite this article:

LIU Si-yuan1,2,WANG Chuang1, et al. Multiscale Morphological Filtering Analysis on Fault Signals of the Hydraulic Pump under the Continuous Variable Loads[J]. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(14): 169-175.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2016/V35/I14/169

[1] 周汝胜, 焦宗夏, 王少萍. 液压系统故障诊断技术的研究现状与发展趋势[J]. 机械工程学报, 2006, 42(9):6-14
     ZHOU Rusheng, JIAO Zongxia, WANG Shaoping. Current Research and Developing Trends on Fault Diagnosis of Hydraulic Systems[J]. Chinese Journal of Mechanical Engineering, 2006, 42(9):6-14
[2] 王少萍, 苑中魁, 杨光琴. 基于小波消噪的液压泵故障诊断[J]. 中国机械工程, 2004, 15(13)：1161-1163.
     Wang Shaoping, Yuan Zhongkui, Yang Guangqin. Sudy on fault diagnosis based on wavelet for hydraulic pump[J]. China Mechanical Engineering, 2004, 15(13)：1161-1163.
[3] 姜万录, 张淑清, 王益群. 液压泵故障的小波变换诊断方法[J]. 机械工程学报, 2001, 37(6)：34-37.
     JIANG Wanlu, ZHANG Shuqing, WANG Yiqun. Wavelet transform method for fault diagnosis of hydraulic pump[J]. Chinese Journal of Mechanical Engineering, 2001, 37(6)：34-37.
[4] 刘玉娇, 姚恩涛, 徐红专. 基于粒子滤波和自回归谱的液压泵故障诊断[J]. 仪器仪表学报, 2012, 33(3)：561-567.
     LIU Yujiao, YAO Entao, XU Hongzhuan. Fault diagnosis of hydraulic pump based on particle filtering and autoregressive spectrum[J]. Chinese Journal of Scientific Instrument, 2012, 33(3)：561-567.
[5] 李志兴, 谢向荣, 梁述海. 小波包降噪在液压泵故障诊断中的应用[J]. 船海工程, 2006, 35(2)：38-41.
     LI Zhixing, XIE Xiangrong, LIANG Shuhai. The application of wavelet-packet noise reduction for fault diagnose of the hydraulic pump[J]. Ship & Ocean Engineering, 2006, 35(2)：38-41.
[6] 姜万录, 郑直, 朱勇, 刘思远. 基于最优扁平型结构元素长度的液压泵故障诊断研究[J]. 振动与冲击, 2014, 33(15)：35-41.
     JIANG Wanlu, ZHENG Zhi, ZHU Yong, LIU Siyuan. Hydraulic pump fault diagnosis based on optimal flat structure element length[J]. Journal of Vibration and Shock, 2014, 33(15)：35-41.
[7] 李扬. 形态学滤波新方法及其在旋转机械故障诊断中的应用[D]. 秦皇岛：燕山大学, 2013.
     LI Yang. Application of mathematical morphology to fault diagnosis of rotary machines[D]. Qinhuangdao：Yanshan University, 2013.
[8] 章立军, 徐金梧, 阳建宏等. 自适应多尺度形态学分析及其在轴承故障诊断中的应用[J]. 北京科技大学学报, 2008, 30(4)：441-445.
     ZHANG Lijun, XU Jinwu, YANG Jianhong, YANG Debin. Adaptive multiscale morphology analysis and its application in fault diagnosis of bearings[J]. Journal of University of Science and Technology Beijing, 2008, 30(4)：441-445.
[9] 郝如江, 卢文秀, 褚福磊. 滚动轴承故障信号的多尺度形态学分析[J]. 机械工程学报, 2008, 44(11)：160-165.
     HAO Rujiang, LU Wenxiu, CHU Fulei. Multiscale morphological analysis on fault signals of rolling element bearing[J]. Chinese Journal of Mechanical Engineering, 2008, 44(11)：160-165.
[10] Maragos P, Schafer R W. Morphological filters--Part I: Their set-theoretic analysis and relations to linear shift-invariant filters[J]. IEEE Transactions on Acoustics, Speech and Signal Processing, 1987, 35(8)：1153-1169.
[11] Maragos P, Schafer R W. Morphological filters--Part II: Their relations to median, order-statistic, and stack filters[J]. IEEE Transactions on Acoustics, Speech and Signal Processing, 1987, 35(8)：1170-1184.
[12] Maragos P. Pattern spectrum and multiscale shape representation. IEEE Transactions on Pattern Analysis and Machine Intelligence, 1989, 11(7)：701-716.