计算机科学 ›› 2018, Vol. 45 ›› Issue (9): 146-151.doi: 10.11896/j.issn.1002-137X.2018.09.023
张刚, 高俊鹏, 李红威
ZHANG Gang, GAO Jun-peng, LI Hong-wei
摘要: 针对强噪声环境下存在的微弱信号检测困难的问题,以级联三稳态随机共振系统为研究对象,利用信噪比增益和特征频率的频谱峰值作为判断指标,对三稳态随机共振的特性进行分析。仿真结果验证了通过调节级联三稳态随机共振系统的相关参数,能够获得比单级三稳态随机共振系统更好的随机共振输出特性。此外,针对弱信号在实际的齿轮故障诊断中难以提取的问题,提出级联三稳态随机共振齿轮故障的诊断方法。结果表明,该方法可以有效提取齿轮故障的微弱特征,进而实现齿轮的早期故障诊断,具有广泛的工程应用前景。
中图分类号:
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