Determination of vibration frequency

Dissertant

Wadi, Salim Muhsin

University

University of Technology

Faculty

-

Department

Department of Electrical Engineering

University Country

Iraq

Degree

Master

Degree Date

2004

English Abstract

Vibration is considered one of the complex problems whic cause many defects on all systems such as mechanical system.

One of the most dominant variable in vibration is the process c defining its frequency, and when the frequency of vibration equa] the natural frequency of body (the natural frequency of bod depends on the nature of the body), the resonance phenomena wi happen and will destroy the body at all.

Therefore, the vibratio frequency considered very important factor.

The best and most suitable techniques to estimate vibratio.

frequency are Spectral Estimation Techniques, because thes techniques deal with digital signals.

Therefore, the results obtaine' from these techniques will be of high accuracy.

Spectral estimation is carried out by various techniques, an* several tests have been carried out to determine the optimum one These test include (Subspace, Parametric, Nonparamatric) oni method or two have been selected from each techniques to conduc the test.

By studying the results of these test, the oplimun techniques is the subspace and the best method in this technique i (.Eigen method), because this method deals with short data lengtl and low SNR, and it has high capability to separate two closeh frequencies.

Mat lab program has been used in all tests.

Main Subjects

Electronic engineering

Topics

• Measurement

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-305534