This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Development of High-resolution Exciting Source Identification System
Technical Paper
2016-01-1325
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
We have developed an excitation source identification system that can distinguish excitation sources on a sub-assembly level (around 30mm) for vehicle components by combining a measurement and a timing analysis. Therefore, noise and vibration problems can be solved at an early stage of development and the development period can be shortened. This system is composed of measurement, control, modeling, and excitation source identification parts. The measurement and the excitation source identification parts are the main topics of this paper. In the measurement part, multiple physical quantities can be measured in multi-channel (noise and vibration: 48ch, general purpose: 64ch), and these time data can be analyzed by using a high-resolution signal analysis (Instantaneous Frequency Analysis (IFA)) that we developed. The main difference from the conventional method (Short Time Fourier Transform Analysis (STFT)) is the calculation of the instantaneous frequency from temporal changes in phase. The advantage of IFA is that it has higher resolution than STFT. On the other hand, in the excitation source identification part, the excitation sources can be identified by using a measurement technique such as IFA and an analysis technique such as 1D modeling and timing analysis. We applied this system to high pressure fuel pumps to identify the excitation sources. In the results, six excitation sources were almost all distinguished. Furthermore, the impact noise of the inlet valve and the pressure pulsation noise of the outlet valve were distinguished correctly. These results show that the inlet and outlet valves can be identified as excitation sources.
Recommended Content
Technical Paper | Reduction of Noise in Hydraulic Systems |
Journal Article | Vibration Analysis for GDI Components Using Partial Coherence Function |
Technical Paper | DYNAMIC BALANCING OF ROTATING PARTS |
Authors
Citation
Watanabe, M., Tanabe, Y., and Yoneya, N., "Development of High-resolution Exciting Source Identification System," SAE Technical Paper 2016-01-1325, 2016, https://doi.org/10.4271/2016-01-1325.Also In
References
- Kaneda Yutaka Microphone array technologies for speech recognition under noisy environment The Journal of the Acoustical Society of Japan 53 11 872 876 1997
- Watanabe Masanori et al. Noise Source Separation Method using Adaptive Filter Internoise 2008
- Hoffmann , G. , Befrui , B. , Berndorfer , A. , Piock , W. et al. Fuel System Pressure Increase for Enhanced Performance of GDi Multi-Hole Injection Systems SAE Int. J. Engines 7 1 519 527 2014 10.4271/2014-01-1209
- Tokuo , K. , Aritomi , S. , Konno , H. , and Machimura , H. Development of High Pressure Fuel Pump for DI Engine (in Japanese) JSME Transactions of JSME Series B 77 779 2011
- Tokuo , K. , Aritomi , S. , Konno , H. , and Machimura , H. Reduction of Pump Pulsation Noise by Using Robust Design Method (in Japanese) JSME Transactions of JSME Series B 78 796 2054 2061 2012
- Nelson D.J. Cross-spectral methods for processing speech J. Acoust. Soc. Am. 110 5 2001 11