Nonstationary spectral analysis method and its application to turbo charger of automobile engine

Author

Takizawa, Yumi ; Fukasawa, Atsushi ; Yamano, Chiharu

Author_Institution

Inst. of Stat. Math., Minist. of Educ., Sci., & Culture, Tokyo, Japan

Volume

2

fYear

1995

fDate

6-10 Nov 1995

Firstpage

856

Abstract

This paper describes an analysis method of nonstationary spectrum based on a modulation model. A nonstationary signal is represented by a transfer function with modulated process. Furthermore, a new spectral axis is brought to describe the nonstationarity of spectral variation. The authors proposed the instantaneous maximum entropy method (IMEM). The proposed algorithm has been applied to analyze vibration signals of the turbo charger in an automobile engine. The results of analysis by the proposed method give useful information on the delicate differences of observed signals

Keywords

automobiles; automotive electronics; internal combustion engines; maximum entropy methods; signal processing; spectral analysis; transfer functions; vibrations; algorithm; automobile engine; instantaneous maximum entropy; modulation model; nonstationary spectral analysis method; spectral variation; transfer function; turbo charger; vibration signals analysis; Algorithm design and analysis; Automobiles; Engines; Entropy; Equations; Signal analysis; Signal detection; Signal generators; Signal processing; Spectral analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control, and Instrumentation, 1995., Proceedings of the 1995 IEEE IECON 21st International Conference on

Conference_Location

Orlando, FL

Print_ISBN

0-7803-3026-9

Type

conf

DOI

10.1109/IECON.1995.483840

Filename

483840