This paper shows how tunable dampers can help control the instant centre of rotation of a 2D rigid body and its polode in planar motion, which in turn implies that the inertia tensor can also be controlled. For mechanisms equipped with some elasticity the results show that damping can also control their natural frequencies. The foundation of a general theory to control the polode is presented, exploring the chance of an optimal control formulation of the problem via a variational control principle, approached by the LQR (Linear Quadratic Regulator) method, after a suitable linearization. Application to automotive suspension linkages is presented that demonstrates the control of the instant roll centre and axis and consequently its instant roll vibration frequency to optimize the response, when excited by lateral inertia forces.

Damping control of polodes, inertia and natural frequencies: Theory and application to automotive suspensions / Mesbahi, S.; Milana, S.; Culla, A.; Pepe, G.; Roveri, N.; Carcaterra, A.. - In: APPLICATIONS IN ENGINEERING SCIENCE. - ISSN 2666-4968. - 15:(2023). [10.1016/j.apples.2023.100143]

Damping control of polodes, inertia and natural frequencies: Theory and application to automotive suspensions

Mesbahi S.;Milana S.;Culla A.;Pepe G.;Roveri N.;Carcaterra A.
2023

Abstract

This paper shows how tunable dampers can help control the instant centre of rotation of a 2D rigid body and its polode in planar motion, which in turn implies that the inertia tensor can also be controlled. For mechanisms equipped with some elasticity the results show that damping can also control their natural frequencies. The foundation of a general theory to control the polode is presented, exploring the chance of an optimal control formulation of the problem via a variational control principle, approached by the LQR (Linear Quadratic Regulator) method, after a suitable linearization. Application to automotive suspension linkages is presented that demonstrates the control of the instant roll centre and axis and consequently its instant roll vibration frequency to optimize the response, when excited by lateral inertia forces.
2023
automotive; control; instant centre; polodes; semi-active damping; vibrations
01 Pubblicazione su rivista::01a Articolo in rivista
Damping control of polodes, inertia and natural frequencies: Theory and application to automotive suspensions / Mesbahi, S.; Milana, S.; Culla, A.; Pepe, G.; Roveri, N.; Carcaterra, A.. - In: APPLICATIONS IN ENGINEERING SCIENCE. - ISSN 2666-4968. - 15:(2023). [10.1016/j.apples.2023.100143]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1686552
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