USA flag logo/image

An Official Website of the United States Government

Model Updating Nonlinear System Identification Toolbox

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2006 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
ZONA Technology, Inc.
9489 E. Ironwood Square Drive Scottsdale, AZ 85258-
View profile »
Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No
Phase 2
Fiscal Year: 2006
Title: Model Updating Nonlinear System Identification Toolbox
Agency: NASA
Contract: NND06AA03C
Award Amount: $599,875.00


ZONA Technology (ZONA) proposes to develop an enhanced model updating nonlinear system identification (MUNSID) methodology that utilizes flight data with state-of-the-art control oriented techniques. The MUNSID toolbox augments the current match-point solution approach using the mu-analysis method with identified nonlinear operators. The procedure calls for a high-fidelity linear aeroelastic model to be tuned quickly with available aeroelastic/aeroservoelastic flight data sets, while block-oriented models are used to highlight the underlying nonlinear structure of the dynamic system. This framework is capable of accounting for several nonlinearities including those due to aerodynamics, structures, control/actuator, and/or geometry.Specifically, this on-line Flutter/LCO predictor can be used to accurately estimate a supercritical LCO case if the global nonlinear dynamic behavior is described throughout a hardening nonlinearity, as well as a more dangerous dynamic behavior, denoted as subcritical LCO, could be developed if a global softening nonlinearity is identified. The devised MUNSID Toolbox will become the flight control engineer's "every day tool" to predict on-line Flutter/LCO phenomena. In Phase II, MUNSID will be updated with fast and computationally efficient routines for system modeling, LFT representation, identification of nonlinearity, estimation of uncertainty, and stability analysis. Deliverables include the MUNSID production software including a GUI, a libra

Principal Investigator:

Dario Baldelli
Principal Investigator

Business Contact:

Darius Sarhaddi
Business Official
Small Business Information at Submission:

Zona Technology, Inc.
9489 E. Ironwood Square Drive Scottsdale, AZ 85258

EIN/Tax ID: 860540628
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No