Characteristics Analysis and Modeling of Fault Sound and Background Noise of Large Central Air Conditioner
Journal of Electrical and Electronic Engineering
Volume 6, Issue 1, February 2018, Pages: 20-25
Received: Mar. 7, 2018;
Published: Mar. 9, 2018
Views 1375 Downloads 84
Li Junhao, School of Electrical Engineering, Shanghai Dianji University, Shanghai, China
Liu Wenhong, School of Electrical Engineering, Shanghai Dianji University, Shanghai, China; School of Electronic Information, Shanghai Dianji University, Shanghai, China
Performance of time delay estimation (TDE) algorithm directly affects effect of electromechanical equipment fault sound source positioning based on TDE. Designing more accurate algorithm based proper models of background noise and fault sound can improve accuracy of localization. Firstly, this paper analyzes the characteristics of noise and fault sound of external central air conditioners, then, models environmental noise using Alpha distribution. Finally, Analyzes measured data and preprocess them, realize the more appropriate modeling of environmental noise and eliminate operating noise sources interference. This study has a guiding significance in large-scale mechanical and electrical equipment failure sound source signal modeling, and is helpful to research on TDE algorithm.
Characteristics Analysis and Modeling of Fault Sound and Background Noise of Large Central Air Conditioner, Journal of Electrical and Electronic Engineering.
Vol. 6, No. 1,
2018, pp. 20-25.
A. F. Browne, S. Patel, S. A. Kaoti, S. M. Lopez and P. Parikh, Area acoustic and electromagnetic emissions monitoring of 3-phase motors, 2017 IEEE International Electric Machines and Drives Conference (IEMDC), Miami, FL, 2017, 1-6.
Fredric Ottermo, Erik Möllerström, Anders Nordborg, Jonny Hylander, Hans Bern- hoff. Location of aerodynamic noise sources from a 200kW vertical-axis wind turbine [J]. Journal of Sound and Vibration, 2017, 400.
AN Lian-qu, FENG Qiang, SHEN Guo-qing, JIANG Gen-shan, ZHANG Shi-ping, WANG Peng. Power Source Passive Positioning Method for Utility Boilers Based on Multi-delay Identification [J]. Chinese Journal of Power Engineering, 2015, 35 (10): 798-804.
Zhang Liang, Liu Zhiguang, Xiao Yanfan, et al. Design of sound source localization system for electromechanical equipment [J]. Instrumentation Technology and Sensor, 2016 (2): 49-52.
Shind e M P, Gupta S N. Signal detection in the presence of atmospheric noise in tropics. IEEE Trans. Communications, 1974, 22(8): 1055-1063.
Georgiou P G, Tsakalides P, Kyriakakis C. Alpha-stable modeling of noise and robusttime-delay estimation in the presence of impulsive noise. IEEE Trans. on Multimedia, 1999, 1(3): 291-301.
WANG Peng, ZHANG Xiao-tong, XU Li-yuan, HE Jie, XU Jin-wu. An indoor near-field measurement algorithm based on adaptive delay estimation [J]. Acta Chimica Sinica, 2017,40 (08): 1902-1917.
Xu Chengwei. Study on the origin, diagnosis and noise reduction of air conditioning noise [J]. Science and Technology Wind, 2012 (04): 108-109.
Qian Shiyu. Acoustic Camera - Making our Community Quiet [J]. Foreign Electronic Measurement Technique, 2009, 28 (02): 5-8.
Li Zhiyuan, Chen Hui, Chen Pin, Lu Yimin. An acoustic power level sound intensity measurement method for large equipment [J]. VIBRATION. Testing and Diagnosticaion, 2013, 33 (02): 311-314.
Junhao Li. Performance Comparison on Three Time Delay Estimation Algorithms Using Experiments [J]. Communications, 2017: 5.
Jiang Rui, Li Qin, Zhong Jianwei. Analysis of power noise in distributed photovoltaic power station monitoring system [J]. Journal of Hubei Institute for Nationalities (Natural Sciences Edition), 2017, 35 (02): 219-223.
Feller W. An introduction to probability theory and its applications. New York: John Wiley & Sons Inc, 1966.
HE Ji-Ai, CHEN Xing. Parameter Estimation of Communication Signals and Its Development [J]. finding Technology, 2017, 36 (3): 6-10.
LIU Wen-hong, ZHANG Shuai, QIU Tian-shuang. Comparison of α-stable distribution feature index estimation methods [J]. Journal of Shanghai Dianji University, 2013, 16 (04): 183-187.
Guan Jiashi, Shi Daowu, Qiu Jianwen, Shi Hongwei. A Method to Estimate the Stable Distribution Symmetry Coefficient and Dispersion Coefficient [J]. Zhonghua University of Science and Technology (Natural Science Edition), 2017, 45 (09): 23-27.
Nikias C L, Shao M. Signal processing with Alpha-stable distributions. New York: John Wiley & Sons Inc, 1995.
Liu Wenhong. Estimation method and application of time delay under impulsive noise [D]. Dalian University of Technology, 2007.
A. Chandra, Measurements of radio impulsive noise from various sources in an indoor environment at 900 MHz and 1800 MHz, The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2002, 639-643 vol. 2.
Shen Qingyue. Selection of sampling rate and quantization bit depth in audio work [J]. Bound Sound Technology, 2013 (02): 54-55 + 60.
Shen Zaiyang. MATLAB Signal Processing [M]. Beijing: Tsinghua University Press, 2017: 234-258.