Non-linear control logics for vibrations suppression: a comparison between model-based and non-model-based techniques

Francesco Ripamonti; Lorenzo Orsini; Ferruccio Resta

doi:10.1117/12.2084163

2 April 2015 Non-linear control logics for vibrations suppression: a comparison between model-based and non-model-based techniques

Francesco Ripamonti, Lorenzo Orsini, Ferruccio Resta

Author Affiliations +

Proceedings Volume 9431, Active and Passive Smart Structures and Integrated Systems 2015; 94312Q (2015) https://doi.org/10.1117/12.2084163
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

Abstract

Non-linear behavior is present in many mechanical system operating conditions. In these cases, a common engineering practice is to linearize the equation of motion around a particular operating point, and to design a linear controller. The main disadvantage is that the stability properties and validity of the controller are local. In order to improve the controller performance, non-linear control techniques represent a very attractive solution for many smart structures. The aim of this paper is to compare non-linear model-based and non-model-based control techniques. In particular the model-based sliding-mode-control (SMC) technique is considered because of its easy implementation and the strong robustness of the controller even under heavy model uncertainties. Among the non-model-based control techniques, the fuzzy control (FC), allowing designing the controller according to if-then rules, has been considered. It defines the controller without a system reference model, offering many advantages such as an intrinsic robustness. These techniques have been tested on the pendulum nonlinear system.

Citation Download Citation

Francesco Ripamonti, Lorenzo Orsini, and Ferruccio Resta "Non-linear control logics for vibrations suppression: a comparison between model-based and non-model-based techniques", Proc. SPIE 9431, Active and Passive Smart Structures and Integrated Systems 2015, 94312Q (2 April 2015); https://doi.org/10.1117/12.2084163

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