Wavelet Features and Hidden Markov Model-Based Aerodynamic Instability Detection for Compressors
Wavelet Features and Hidden Markov Model-Based Aerodynamic Instability Detection for Compressors
复制标题
基于小波特征和隐马尔可夫模型的压缩机气动不稳定性检测
DOI:
10.1115/1.4044495
复制
发表时间:
2019-11
影响因子:
1.7
通讯作者:
Hua Hongxing
中科院分区:
文献类型:
--
作者:
Wang Jiaqi;Chen Jin;Dong Guangming;Hua Hongxing
A reliable technique is introduced to detect aerodynamic instability of compressors based on wavelet features and hidden Markov model (HMM). A single sensor is sufficient for stall warning if the position of the sensor is carefully selected. The method involves obtaining high-response pressure signal near the rotor tip close to the leading edge. Rotating instabilities band wavelet features are then extracted and trained for the HMM; using data under normal operating conditions, the performance index (PI) is calculated. Unsteady behaviors in prestall processes are discussed and casing wall pressure maps are implemented to explore the mechanism of tip leakage vortex (TLV), which are helpful in explaining the various PI results from different feature selections and probe locations. Experimental results show that the trend indices of PI suitably characterize the compressor aerodynamic instability in subsonic operation.
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影响因子:
6.4
作者:
Dong, Ming;He, David
通讯作者:
He, David
DOI:
10.1016/s0065-2458(08)60404-0
发表时间:
1993
期刊:
Adv. Comput.
影响因子:
--
作者:
Franziska Wulf
通讯作者:
Franziska Wulf
影响因子:
1.7
作者:
A. Young;I. Day;G. Pullan
通讯作者:
A. Young;I. Day;G. Pullan
影响因子:
8.8
作者:
G. Pullan;A. Young;I. Day;E. Greitzer;Z. Spakovszky
通讯作者:
G. Pullan;A. Young;I. Day;E. Greitzer;Z. Spakovszky
影响因子:
1.7
作者:
Mailach, R;Lehmann, I;Vogeler, K
通讯作者:
Vogeler, K