噪声与振动控制2016，Vol.36Issue(3)：174-178,209,6.DOI:10.3969/j.issn.1006-1335.2016.03.036
基于耦合Duffing振子的微弱故障信号检测
Weak Fault Signal Detection Based on Coupled Duffing Oscillators
摘要
Abstract
For the shortage of the traditional signal processing method in weak signal detection in low SNR condition, a new system detection method based on a double Duffing oscillator is proposed. Through dynamic analysis, this system is found to have a more complex dynamic behavior than that of the single Duffing oscillator. The principle of weak signal detection based on phase plane changing is expounded. Through transforming the time scale, the unknown frequency signals are detected. Finally, the weak pulse signal is detected and the early fault diagnosis of a real bearing is realized, and good results are obtained. This method has broad prospects for application in early fault diagnoses of wireless communications, radar systems and rotating machinery.关键词
振动与波/双耦合Duffing振子/混沌/周期信号/故障诊断Key words
vibration and wave/bi-coupled Duffing oscillators/chaos/periodic signal/fault diagnosis分类
机械制造引用本文复制引用
王晓东,赵志宏,杨绍普..基于耦合Duffing振子的微弱故障信号检测[J].噪声与振动控制,2016,36(3):174-178,209,6.基金项目
国家自然科学基金资助项目(11172182；11227201；11472179) （11172182；11227201；11472179）
