Optimal design of a vibro-impact electro-mechanical system with uncertainties

Abstract : In this paper, the robust design with an uncertain model of a vibro-impact electromechanical system is done. The electromechanical system is composed of a cart, whose motion is excited by a DC motor (motor with continuous current), and an embarked hammer into this cart. The hammer is connected to the cart by a nonlinear spring component and by a linear damper, so that a relative motion exists between them. A linear flexible barrier, placed outside of the cart, constrains the hammer movements. Due to the relative movement between the hammer and the barrier, impacts can occur between these two elements. Some system parameters are uncertain, such as the stiffness and the damping coefficients of the flexible barrier. The objective of the paper is to perform an optimization of this electromechanical system with respect to design parameters (spring component, and barrier gap) in order to maximize the impact power under the constraint that the electric power consumed by the DC motor is lower than a maximum value. This optimization is formulated and solved in the framework of robust design due to the presence of uncertainties in the model.
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Roberta Lima, Christian Soize, Rubens Sampaio. Optimal design of a vibro-impact electro-mechanical system with uncertainties. 17th International Symposium on Dynamic Problems of Mechanics (DINAME 2015), ABCM, Feb 2015, Natal, Rio Grande do Norte, Brazil. pp.1-6. ⟨hal-01158255⟩

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