• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2026, Vol. 62 ›› Issue (13): 193-206.doi: 10.3901/JME.260695

• 机械动力学 • 上一篇    下一篇

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基于变分循环冲击模态分解的氢气压缩机增压缸同型多源混叠信号分析方法

刘志亮1, 张潇楠1, 陈志鹏1, 唐瑜君2, 梅松政3, 钟春波2, 顾小明2,3, 左明健1,4   

  1. 1. 电子科技大学机械与电气工程学院 成都 611731;
    2. 厚普清洁能源(集团)股份有限公司 成都 610097;
    3. 成都安迪生测量有限公司 成都 610207;
    4. 青岛明思为科技有限公司 青岛 266041
  • 收稿日期:2025-06-09 修回日期:2025-12-10 发布日期:2026-08-28
  • 作者简介:刘志亮(通信作者),男,1984年出生,博士,教授,博士生导师。主要研究方向为复杂装备智能测试、诊断与运维。E-mail:zhiliang_liu@uestc.edu.cn
  • 基金资助:
    四川省科技计划(2023YFG0351,2024JDHJ0057)和国家自然科学基金(52475091)资助项目。

Analysis of Homotypic Multi-source Mixed Signal for the Booster Cylinder of Hydrogen Compressors Based on Variational Cyclic Impulse Mode Decomposition

LIU Zhiliang1, ZHANG Xiaonan1, CHEN Zhipeng1, TANG Yujun2, MEI Songzheng3, ZHONG Chunbo2, GU Xiaoming2,3, ZUO Mingjian1,4   

  1. 1. School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731;
    2. Houpu Clean Energy Group Co., Ltd., Chengdu 610097;
    3. Chengdu Andisoon Measure Co., Ltd., Chengdu 610207;
    4. Qingdao Mingserve Technology Ltd., Qingdao 266041
  • Received:2025-06-09 Revised:2025-12-10 Published:2026-08-28

摘要: 针对液驱往复式氢气压缩机增压缸振动信号存在同型多源混叠的问题,提出了一种新型自适应分解方法——变分循环冲击模态分解。该方法结合了变分模型和循环冲击模态的特点,通过优化迭代过程,有效地分解了同型多源混叠振动信号,并提取与故障相关的有效信息。变分循环冲击模态分解假设信号中的循环冲击模态及干扰成分的能量集中在有限带宽范围内,并以固定的周期重复出现峰值。通过最小化每个模态的频率和时间中心偏移的L2范数之和,并以每个循环冲击模态的和与原始信号之间的误差为约束条件,实现了同型信号的分解。与传统方法相比,变分循环冲击模态分解能够有效处理同型多源混叠信号,分解出单缸活塞的冲击信号。针对液驱往复式氢气压缩机增压缸诊断指标中故障机理缺失的问题,提出了活塞振动谐波幅值累加和指标,通过提取活塞往复频率及其谐波的幅值,实现了对活塞故障的检测。最后,在液驱往复式氢气压缩机试验平台的测试与分析结果表明,结合活塞振动谐波幅值累加和指标的变分循环冲击模态分解诊断方法具备较强的可行性,并且在准确率和精确度方面优于现有方法,验证了其有效性和先进性。

关键词: 同型多源混叠, 变分循环冲击模态分解, 振动分析, 增压缸故障诊断, 氢气压缩机

Abstract: The issue of multi-source mixing in the vibration signals of the booster cylinder of hydraulic-driven reciprocating hydrogen compressors is addressed. A novel adaptive decomposition method, called variational cyclic impact mode decomposition (VCIMD), is proposed. This method combines the characteristics of variational models and cyclic impact modes, and through an optimized iterative process, it effectively decomposes multi-source mixed vibration signals, extracting relevant fault-related information. VCIMD assumes that the energy of cyclic impact modes and interference components in the signal is concentrated within a limited bandwidth and exhibits peak values that repeat at fixed periods. By minimizing the sum of the L2 norms of frequency and time center shifts for each mode, and constraining the error between the sum of cyclic impact modes and the original signal, the decomposition of the mixed signals is achieved. Compared to traditional methods, VCIMD can effectively handle multi-source mixed signals and decompose the impact signals from the single-cylinder piston. To address the lack of fault mechanism indicators in the diagnostic process for the booster cylinder of hydraulic-driven reciprocating hydrogen compressors, a Piston Vibration Harmonic Amplitude Accumulation Index (PVHAAI) is proposed. By extracting the amplitude of the piston’s reciprocating frequency and its harmonics, this index enables the detection of piston faults. Finally, the experimental results from a real hydraulic-driven reciprocating hydrogen compressor test platform demonstrate that the VCIMD method, combined with the PVHAAI, is highly feasible. It outperforms existing methods in terms of accuracy and precision, validating its effectiveness and advancement.

Key words: homogeneous multi-source mixing, variational cyclical impulse mode decomposition, vibration analysis, booster cylinder fault diagnosis, hydrogen compressor

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