[en] In the virtual prototyping era, it remains crucial to validate the simulation results using experimental tests. In this context, one important assumption at the root of experimental modal analysis, the dominant method used in aerospace, civil and mechanical engineering, is that the structural system behaves linearly. To address this limitation, the idea of control-based nonlinear vibration testing (CBNVT) has recently emerged in the structural dynamics community. CBNVT combines (i) feedback control to stabilize unstable orbits and (ii) path-following techniques to explore - in a systematic and effective manner - the dynamics of the system directly during the experiment, i.e., without the need for a mathematical model of the system. The objective of this paper is twofold, namely (i) to present the existing methods in a unified manner and (ii) to introduce a novel, fully online and derivative-less experimental arclength continuation method.
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