An active control logic to improve the fatigue strength of smart flexible structures

Pasquale Ambrosio; Francesco Braghin; Ferruccio Resta; Francesco Ripamonti

doi:10.1117/12.2009678

10 April 2013 An active control logic to improve the fatigue strength of smart flexible structures

Pasquale Ambrosio, Francesco Braghin, Ferruccio Resta, Francesco Ripamonti

Proceedings Volume 8688, Active and Passive Smart Structures and Integrated Systems 2013; 86881U (2013) https://doi.org/10.1117/12.2009678
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2013, San Diego, California, United States

Abstract

In general active vibration control intrinsically implies a fatigue damage reduction. Anyway, this assumption is not always verified. In these cases it is possible to deeper investigate the fatigue phenomena on smart flexible structures and their reduction from a control point of view. In this article, to identify the problem main parameters, a simplified interpretation of fatigue damage is given using the frequency analysis framework. Then, the active control logic is defined as an optimization problem with a quadratic functional taking into account the previously cited parameters. Finally, because of non-linearity of fatigue phenomenon, an adaptive approach is applied and a numerical/experimental validation is carried out.

Citation Download Citation

Pasquale Ambrosio, Francesco Braghin, Ferruccio Resta, and Francesco Ripamonti "An active control logic to improve the fatigue strength of smart flexible structures", Proc. SPIE 8688, Active and Passive Smart Structures and Integrated Systems 2013, 86881U (10 April 2013); https://doi.org/10.1117/12.2009678

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