Estimation of modal parameters using a wavelet-based approach / Rick Lind, Marty Brenner, and.Sydney M. Haley.

Format:

Book

Government document

Author/Creator:

Lind, Rick, author.

Brenner, Marty, author.

Haley, Sydney M., author.

Contributor:

Hugh L. Dryden Flight Research Center, issuing body.

Series:

NASA technical memorandum ; 97-206300.

NASA/TM ; 97-206300

Language:

English

Subjects (All):

Aeroservoelasticity.

Accelerometers.

accelerometers.

Genre:

NASA Technical Memorandum

Physical Description:

1 online resource (9 pages) : illustrations.

Place of Publication:

Edwards, California: National Aeronautics and Space Administration, Dryden Fligh Research Center, November 1997.

Summary:

Modal stability parameters are extracted directly from aeroservoelastic flight test data by decomposition of accelerometer response signals into time-frequency atoms. Logarithmic sweeps and sinusoidal pulses are used to generate DAST closed loop excitation data. Novel wavelets constructed to extract modal damping and frequency explicitly from the data are introduced. The so-called Haley and Laplace wavelets are used to track time-varying modal damping and frequency in a matching pursuit algorithm. Estimation of the trend to aeroservoelastic instability is demonstrated successfully from analysis of the DAST data.

Notes:

"November 1997."

"Presented at AIAA Atmospheric Flight Mechanics Conference, New Orleans, Louisiana, August 8-11, 1997"--Report documentation page.

"Performing organization: NASA Dryden Flight Research Center"--Report documentation page.

Includes bibliographical reference (pages 6-7).

Description based on online resource; title from PDF title page (NASA, viewed June 19, 2017).

Other Format:

Microfiche version: Lind, Rick. Estimation of modal parameters using a wavelet-based approach

OCLC:

703662474