On the basis of wavelet packet decomposition technique introduced firstly, the measured unstable oil-film oscillations of single-disc and single-span rotor system were investigated.

• 在介绍小波包分解原理的基础上,对试验测得的单盘单跨转子系统的油膜振荡非平稳信号用小波包分解方法进行了研究。