Evaluation of a Frequency Response Technique for Aircraft System Identification.
Abstract
This paper presents the results of a project which used frequency analysis methods applied to flight test data in order to identify aircraft parameters. Computer programs were developed to generate simulated flight test data so the frequency response programs could be tested using a noise free data source. Once the simulated data programs complete, the frequency response methods were developed. The frequency response method uses the cross-spectral density functions. Noise contamination studies were made. The programs were used with the test project, HAVE DELAY, which was conducted at the USAF Test Pilot School. The frequency response program worked well up to a frequency of about 15 radians per second. Above 15 radians per second the programs suffer from additional noise and aliasing effects. Recommendations were made to study means of reducing noise effects to include anti-aliasing filters and noise processing schemes for digital data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 31, 1985
- Accession Number
- ADA168604
Entities
People
- Allan T. Reed
Organizations
- Air Force Institute of Technology