Nonlinear modeling and control of coupled dynamics of a fixed wing micro air vehicle

2016 ◽  
Author(s):  
K Harikumar ◽  
Sidhant Dhall ◽  
M Seetharama Bhat
Keyword(s):  
Nonlinear Modeling ◽  
Micro Air Vehicle ◽  
Coupled Dynamics ◽  
Modeling And Control ◽  
Air Vehicle ◽  
And Control

Nonlinear Modeling and Control of Hysteresis in Active Material Systems

1999 ◽  
Author(s):  
Glenn V. Webb ◽  
Dimitris C. Lagoudas ◽  
Andrew J. Kurdila
Keyword(s):  
Shape Memory ◽  
Nonlinear Modeling ◽  
Active Material ◽  
Electrorheological Fluids ◽  
Adaptive Model ◽  
Structural System ◽  
Modeling And Control ◽  
Significant Challenge ◽  
Hysteresis Nonlinearity ◽  
And Control

Abstract Active material actuators present a significant challenge to researchers interested in applying them to aerospace structures. Materials such as shape memory alloys, piezo-ceramcs and electrorheological fluids exhibit hysteresis to varying degrees. Not only do they exhibit hysteresis, but in some cases the hysteresis is non-stationary. We present a methodology that allows for design of controllers for the structural system from linear system theory. This is accomplished by compensating, or linearizing, the hysteresis nonlinearity using an adaptive model of hysteresis. Experimental results for adaptive control of shape memory alloy actuators with non-stationary hysteresis are provided.

Sign in / Sign up

Export Citation Format

Share Document