Model Updating Nonlinear System Identification Toolbox

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$69,787.00
Award Year:
2005
Program:
SBIR
Phase:
Phase I
Contract:
NND05AA44C
Award Id:
72704
Agency Tracking Number:
041184
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
7430 E. Stetson Drive, Suite 205, Scottsdale, AZ, 85251
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
182103291
Principal Investigator:
DarioBaldelli
(480) 945-9988
dario@zonatech.com
Business Contact:
JenniferScherr
Business Official
(480) 945-9988
jennifer@zonatech.com
Research Institute:
n/a
Abstract
ZONA Technology proposes to develop an enhanced model updating nonlinear system identification (MUNSID) methodology by adopting the flight data with state-of-the-art control oriented techniques. The end product is a flight data enhanced MUNSID/ZAERO toolbox for accurate predictions of flutter and limit cycle oscillation (LCO) instabilities. The enhancement employs control oriented techniques, namely, model uncertainty, linear fractional transformation framework, mu-analysis and nonlinear operators identification, to adopt the emerging aeroelastic flight-test data. This toolbox augments the current match-point solution approach using the mu-analysis method with identified nonlinear operators. The procedure calls for ZAERO's high-fidelity linear aeroelastic model to be tuned quickly with available aeroelastic/aeroservoelastic, AE/ASE, flight data sets, while block-oriented models are used to highlight the underlying nonlinear structure of the AE/ASE system. This framework is capable of accounting for several nonlinearities including those due to aerodynamics, structures, control/actuator, and/or geometry. The toolbox will be used as the next-generation flutterometer to predict the onset of AE/ASE instabilities. Two case studies, simple and complex dynamic ASE systems, are proposed to validate and verified this advanced control-oriented concept. This enabling technology will be invaluable to the flight test community by extending the current industry modeling tools to include

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government