CAJ | 학술논문

盲源分离是一种有效的混合故障诊断方法，而局部特征尺度分解(LCD)是非平稳信号的有效分析处理工具，综合两者的优点，提出了基于 LCD 的齿轮箱混合故障盲源分离方法。将源信号 LCD 分解，得到新的多维信号，采用 Bayesian 信息准则(BIC)估计盲源的数目并对多维信号进行重组。最后进行联合近似对角化处理，实现源信号的盲分离。仿真和实验结果表明，该方法能够有效地实现齿轮箱混合故障盲源分离。
맹원분리시일충유효적혼합고장진단방법，이국부특정척도분해(LCD)시비평은신호적유효분석처리공구，종합량자적우점，제출료기우 LCD 적치륜상혼합고장맹원분리방법。장원신호 LCD 분해，득도신적다유신호，채용 Bayesian 신식준칙(BIC)고계맹원적수목병대다유신호진행중조。최후진행연합근사대각화처리，실현원신호적맹분리。방진화실험결과표명，해방법능구유효지실현치륜상혼합고장맹원분리。
BSS is an effective multi-fault diagnosis method,and LCD is an effective tool of analy-zing and processing non-stationary signals.Combining the advantages of LCD and BSS,a BSS of gear-box multi-fault was proposed based on LCD.The source signals were decomposed by LCD to consti-tute new multidimensional signals,then estimating blind source number by Bayesian information crite-rion(BIC)to restructure the multidimensional signals,finally,using joint approximate diagonalization to separate the blind source signals.Simulation and experiments show that the method can effectively separate the blind source of the gearbox multi-faults,and provide a new method for fault diagnosis of the gearbox.