| 内燃机振动信号的混沌分形特性研究 |
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| 引用本文： | 夏勇,张振仁,商斌梁. 内燃机振动信号的混沌分形特性研究[J]. 振动与冲击, 2001, 20(2): 64-66 |
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| 作者姓名： | 夏勇 张振仁 商斌梁 |
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| 作者单位： | 第二炮兵工程学院研究生二队, |
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| 摘 要： | 运用分形及混沌理论对实测的内燃机各种振动信号进行了分析，计算了信号的Lyapnov指数及关维数。结果表明，缺盖振动混沌与确定性共存，而缸套，机身振动则为混沌振动，信号的关联维数可作为气阀机构诊断的一个诊断特征量。
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| 关 键 词： | 内燃机 振动信号 关联维数 分形 混沌 故障诊断 状态监测 信号分析 |
| 修稿时间： | 2000-09-26 |
Investigation on Fractal and Chaotic Characteristics of Vibration Signals of I. C. Engines |
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| Xia Yong Zhang Zhenren Shang Binliang [WTBZ]. Investigation on Fractal and Chaotic Characteristics of Vibration Signals of I. C. Engines[J]. Journal of Vibration and Shock, 2001, 20(2): 64-66 |
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| Authors: | Xia Yong Zhang Zhenren Shang Binliang [WTBZ] |
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| Affiliation: | Xia Yong Zhang Zhenren Shang Binliang [WT5BZ] |
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| Abstract: | WT5BZ]Vibration signals measured on cylinder head,cylinder and block of a diesel engine have been analyzed with fractal and chaos theory,Correlation dimensions of the vibration signals are computed and applied to describe the nonlinear behavior of the engine in the different fault conditions of the valve train.The Lyapnov exponents of the vibration signals are worked out.The results show that chaotic and determined features exist together in cylinder head vibration,while the cylinder vibration and block vibration are both purely chaotic.It also shows that correlation dimensions of the vibration signals are feasible for diagnosis for the valve train. [WT5HZ] |
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| Keywords: | internal combustion Engines vibration signals correlation dimension fractal chaos |
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