Nonlinear Control of a Dynamic Model of HIV-1

2005 ◽  
Vol 52 (3) ◽  
pp. 353-361 ◽  
Author(s):  
S.S. Ge ◽  
Z. Tian ◽  
T.H. Lee
Keyword(s):  
Nonlinear Control ◽  
Dynamic Model ◽  
Hiv 1

scholarly journals Furuta's Pendulum: AConservativeNonlinear Model for Theory and Practise

2010 ◽  
Vol 2010 ◽  
pp. 1-29 ◽  
Author(s):  
J. Á. Acosta
Keyword(s):  
Nonlinear Control ◽  
Automatic Control ◽  
Dynamic Model ◽  
Classical Mechanics ◽  
Dynamical Model ◽  
Integrals Of Motion ◽  
Control Techniques ◽  
Nonlinear Controllers ◽  
Control Community ◽  
Practical Model

Furuta's pendulum has been an excellent benchmark for the automatic control community in the last years, providing, among others, a better understanding of model-based Nonlinear Control Techniques. Since most of these techniques are based on invariants and/or integrals of motion then, the dynamic model plays an important role. This paper describes, in detail, the successful dynamical model developed for the available laboratory pendulum. The success relies on a basic dynamical model derived from Classical Mechanics which has been augmented to compensate thenon-conservativetorques. Thus, thequasi-conservative“practical” model developed allows to design all the controllers as if the system was strictlyconservative. A survey of all the nonlinear controllers designed and experimentally tested on the available laboratory pendulum is also reported.

Tracking of High Acceleration Movements With a Pneumatic Impedance Controller

2000 ◽  
Vol 123 (3) ◽  
pp. 549-551 ◽  
Author(s):  
M. Guihard ◽  
P. Gorce
Keyword(s):  
Asymptotic Stability ◽  
Control Theory ◽  
Nonlinear Control ◽  
Rigid Body ◽  
Dynamic Model ◽  
Physiological Data ◽  
Original Structure ◽  
Pneumatic Actuators ◽  
High Acceleration ◽  
Nonlinear Control Theory

An original structure to simulate the vertical dynamic jump of one leg is proposed in this paper. The aim is to reproduce a motion composed of an upward propulsion, a flying and a landing phase. The leg is modeled as a three rigid body moved by three pneumatic actuators. A dynamic model of the structure is first presented and the design of the impedance controller is developed based on the nonlinear control theory. The originality of the controller lays in the consideration of impedance behavior at each joint during free and constrained phases. The asymptotic stability is ensured using Popov criteria. The simulations proposed are based on physiological data coming from experiments of a human performing a jump. This specific motion will show the performances of the controller especially during the propulsion and the landing phases because of their high acceleration characteristics.

Fighting a virus with a virus: a dynamic model for HIV-1 therapy

2003 ◽  
Vol 185 (2) ◽  
pp. 191-203 ◽  
Author(s):  
Tomás Revilla ◽  
Gisela Garcı́a-Ramos
Keyword(s):  
Dynamic Model ◽  
Hiv 1
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