李宏坤   

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Language:English

Paper Publications

Title of Paper:往复式压缩机气缸压力模拟曲线提取

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Date of Publication:2009-03-15

Journal:振动、测试与诊断

Included Journals:Scopus、EI、PKU、CSCD

Volume:29

Issue:1

Page Number:79-82

ISSN No.:1004-6801

Key Words:往复式压缩机;故障诊断;包络;频带能量准则;梳状滤波

Abstract:提出了一种基于振动信号分析的往复式压缩机故障诊断方法.应用频域能量准则判定汽缸压力变化引起的振动响应信号所处频带,构造梳状滤波器提取出响应信号,对得到的相应信号进行包络分析,得到的包络曲线体现了气缸压力的变化趋势,可应用该曲线绘制模拟示功图对往复式压缩机故障进行诊断.对工程信号的分析表明,该方法不仅可以区分出压缩机正常与故障状态,还可以区分出不同的故障类型,具有较好的工程应用价值.

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