标题：
Operational modal analysis of a turbine in big noise environment
点击次数：
所属单位：
机电学院
发表刊物：
Proc. ISMA - Int. Conf. Noise Vib. Eng. USD - Int. Conf. Uncertain. Struct. Dyn.
摘要：
The testing of the dynamic behaviors of rotating machinery is important during its design and using process. Order based modal analysis (OBMA) is a novel modal analysis method of rotor systems under harmonic excitation. This paper utilizes OBMA to identify the resonances from the noise polluted operational data in a turbine's run-up process. First, stationary wavelet transform (SWT) is employed to filter out the uncorrelated noise. Then, an order tracking method is utilized to achieve the accurate harmonic response known as engine orders. Finally, the PolyMAX modal parameter estimation algorithm is applied to identify the resonance frequency, damping and modal shapes. The method simulation was constructed with both big noise and harmonic response during a run-up process. Afterwards, this method was verified by a rotor rig experiment using the run-up data of a laboratory turbine model. © Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics. All rights reserved.
是否译文：
否
发表时间：
2018-01-01
合写作者：
Zhao, M.,岳林
通讯作者：
Zhao, M.,赵敏
发表时间：
2018-01-01
学位：工学博士学位
职称：教授
所在单位：自动化学院