SOURCE IDENTIFICATION USING MULTIINPUT SINGLE-OUTPUT MODELING AND CAUSALITY CHECKING OF CORRELATED INPUTS

被引:9
作者
PARK, JS
KIM, KJ
机构
[1] Center for Noise and Vibration Control, Department of Mechanical Engineering, KAIST, Science Town, Taejon
来源
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME | 1994年 / 116卷 / 02期
关键词
D O I
10.1115/1.2930417
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
This paper presents experimental results of a case study of source identification using multiple-input/single-output modeling in a case where the inputs are coherent to some extent and, hence, the priority among the correlated inputs must be decided before applying the partial coherence function approach. The basic idea is that either one of any two correlated signals causes the other and that this causality can be checked by observing the impulse response functions estimated in the negative time region, interpretations of which are provided for a system transfer function given in the fractional form of polynomials and for a case of wave propagation. The experimental results from a three inputs/single output acoustical system shows that the method works well and is promising in the source identification problems with coherent inputs.
引用
收藏
页码:232 / 236
页数:5
相关论文
共 15 条
[1]  
Alfredson, R.J., The Partial Coherence Technique for Source Identification on a Diesel Engine (1977) Journal of Sound and Vibration, 55 (4), pp. 487-494
[2]  
Bendat, J.S., Solutions for the Multiple Input/Output Problem (1976) Journal of Sound Vibration, 44 (3), pp. 311-325
[3]  
Bendat, J.S., Modern Analysis Procedures for Multiple Input/Output Problems (1980) Journal of the Acoustical Society of America, 68 (2), pp. 498-503
[4]  
Bendat, J.S., Piersol, A.G., (1980) Engineering Applications of Correlation and Spectral Analysis, , Wiley, New York
[5]  
Bendat, J.S., System Identification From Multiple Input/Output Data (1981) Journal of Sound and Vibration, 49 (3), pp. 293-308
[6]  
Bendat, J.S., Piersol, A.G., (1986) RANDOM DATA: Analysis and Measurement Procedures, , Wiley-Interscience, New York
[7]  
Dodds, C.J., Robson, J.D., Partial Coherence in Multivariate Random Processes (1975) Journal of Sound and Vibration, 42 (2), pp. 243-249
[8]  
Fahy, F.J., (1989) Sound Intensity, , Elsevier Applied Science
[9]  
Park, J.S., Kim, K.J., Determination of the Priority Among Correlated Inputs in the Source Identification Problems (1992) Mechanical System and Signal Processing, 6 (6), pp. 491-502
[10]  
Parks, T.W., Burrus, C.S., (1987) Digital Filter Design, , John Wiley &Sons