| 基于汽车振动分析的发动机在线转速实验研究 |
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| 引用本文： | 陈曦,袁文文.基于汽车振动分析的发动机在线转速实验研究[J].自动化与仪表,2011,26(1). |
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| 作者姓名： | 陈曦 袁文文 |
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| 作者单位： | 河北工业大学,电气自动化学院,天津,300130 |
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| 摘 要： | 为方便简易地满足环保检测时对发动机转速测量的实时要求,在比较了传统的测量方法的优缺点后,采用无需拆卸机械的振动检测法.为得到更精确的转速,对振动信号的分析方法进行了设计.首先利用相关分析对采集到的信号进行时域消噪处理,其次在频域利用CZT变换以振动基频附近的较小范围进行窄带分析,软件仿真结果较好地满足了要求.现场实验采集夏利振动信号进行处理,误差分析证明该方法的可行性、实用性,实际应用中用DSP实现,适用于各种车辆.
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| 关 键 词： | 汽车发动机 转速测量 相关分析 CZT变换 |
Research on the Online Measurement of Automobile Engine Speed Based on Vibration Analysis |
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| CHEN Xi,YUAN Wen-wen.Research on the Online Measurement of Automobile Engine Speed Based on Vibration Analysis[J].Automation and Instrumentation,2011,26(1). |
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| Authors: | CHEN Xi YUAN Wen-wen |
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| Affiliation: | CHEN Xi,YUAN Wen-wen(School of Electrical Engineering and Automation,Hebei University of Technology,Tianjin 300130,China) |
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| Abstract: | Compared with the advantages and disadvantages of the traditional measurement method,take the method of vibration detection without demolition equipments,to conveniently and easily meet the requirements of real-time measurement of engine speed from the environmental testing.The methods of signal processing was designed in order to get more accurate speed.Firstly,The collected signal was analyzed on time-domain by correlation analysis.Second,CZT was used in spectrum zooming analysis near the base vibration f... |
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| Keywords: | automobile engine rotation speed measurement vibration analysis CZT transform |
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