Abstract :
[en] Experimental continuation encompasses a set of methods that combine control and continuation to obtain the full bifurcation diagram of a nonlinear system experimentally, including responses that would be unstable in the system without feedback control. Such control-based methods thus allow the experimenter to directly and exhaustively explore the dynamics of the system without the need for a good mathematical model. The objective of this paper is twofold, namely (i) to review and present the state-of-the-art methods in a unified manner and (ii) to introduce a novel experimental derivative-free arclength continuation procedure, termed arclength control-based continuation. These methods are also demonstrated and compared on an electronic Duffing oscillator and a clamped thin plate featuring geometrical nonlinearity. Finally, the current state of the art is reflected upon, and the challenges lying ahead for this growing field are discussed.
Disciplines :
Mechanical engineering
Aerospace & aeronautics engineering
Engineering, computing & technology: Multidisciplinary, general & others
Funding text :
Gaëtan Abeloos and Ghislain Raze are a FRIA Grantee and a Postdoctoral Researcher, respectively, of the Fonds de la
Recherche Scientifique - FNRS, which is gratefully acknowledged.
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