Robust modal identification/estimation of the Mini-Mast testbed
Abstract
The Mini-Mast is a 20 meter long three-dimensional, deployable/retractable truss structure designed to imitate future trusses in space. Presented here are results from a robust (with respect to measurement noise sensitivity), time domain, modal identification technique for identifying the modal properties of the Mini-Mast structure even in the face of noisy environments. Three testing/analysis procedures are considered: sinusoidal excitation near resonant frequencies of the Mini-Mast, frequency response function averaging of several modal tests, and random input excitation with a free response period.
- Publication:
-
Journal of Guidance Control Dynamics
- Pub Date:
- June 1992
- DOI:
- 10.2514/3.20886
- Bibcode:
- 1992JGCD...15..642R
- Keywords:
-
- Estimates;
- Excitation;
- Identifying;
- Resonant Frequencies;
- Spacecraft Structures;
- Structural Vibration;
- Trusses;
- Vibration Damping;
- Algorithms;
- Fourier Transformation;
- Sine Waves;
- Spacecraft Design, Testing and Performance