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Study of the Secondy Path Problem of Active Noise Control in Duct

Author: XiaoZuo
Tutor: ZhaoHongLiang
School: Shandong University of Science and Technology
Course: Detection Technology and Automation
Keywords: Pipeline Active noise control Secondary channel Identification FXLMS
CLC: TB535
Type: Master's thesis
Year: 2010
Downloads: 56
Quote: 0
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Abstract


Pipeline as a transmission channel and transmission of material information media extensively in the field of industrial and agricultural production , the pipeline noise is attendant impact on the development of industrial and agricultural production . Active noise control (ANC) to eliminate pipe noise is a broad application prospects . Secondary path is always the problem of uncertainty is the focus of the study and in the pipeline Active Noise Control , at home and abroad mainstream control algorithm for sub- channel modeling and identification . Uncertainty exists for the pipeline active noise control sub- channel , the main method of the existing identification of the secondary path , the sub- channel offline and online identification principle , comparison of several system identification process representation of the pros and cons of the algorithm . System modeling, based on the basic principles of the secondary path identification algorithm rely on MATLAB Simulink platform system software simulation of the algorithm , the comparative analysis step , the sampling frequency , filter order parameters on the performance of the algorithm , and for each class algorithm convergence speed , a qualitative study of the system stability , and noise reduction effects . With the DSP TMS320VC5509 treatment plate structures the active pipeline muffler control experimental platform collection site signal , Programming , real-time signal processing , typical algorithm experiments , compare and analyze the characteristics and effects of various types of algorithms in the identification of the secondary path . The paper provides a variety of algorithms experimental data and charts , clear and intuitive reflects the characteristics of the various algorithms , provide a valuable basis for the study of such subjects , it has important practical research significance .

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CLC: > Industrial Technology > General industrial technology > Acoustic engineering > Vibration, noise and its control > Vibration and noise control and its use
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