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Chaos diagnosis system of vibration fault for vehicle diesel engine and its application
Author(s): 
Pages: 984-989
Year: Issue:  4
Journal: Journal of Central South University of Technology

Keyword:  车用柴油机 振动信号 混沌 时间序列 关联维数 Lyapunov指数;
Abstract: 为实现车用柴油机潜在振动故障有效诊断,基于建立的车用柴油机状态监测系统提取车用柴油机振动信号,并得出不同嵌入相空间下车用柴油机机身振动信号时间序列关联维数的变化规律。研究结果表明:车用柴油机振动信号时间序列是混沌序列,影响车用柴油机振动信号的系统内部因素最多可达8个,最少不会少于1个;缸盖振动既具确定性,又具混沌特性,而缸套振动、机身振动则可以认为是混沌振动。
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