Because of their almost zero friction and wear, aerostatic pads are widely used in applications where very precise positioning is required. However, this kind of bearing suffers from poor damping and low specific stiffness. This paper presents a new compensation strategy to increase air pad stiffness. This method exploits a custom-built pneumatic valve which can be easily integrated with any commercial pad. The design and the working principle of the proposed system are described and studied with the aid of a lumped parameter model. The effectiveness of the proposed compensation is numerically and experimentally evaluated. The results demonstrate that the solution represents a good and cost-effective method to enhance the static stiffness of aerostatic pads.

An aerostatic pad with an internal pressure control / Lentini, L.; Colombo, F.; Raparelli, T.; Trivella, A.; Viktorov, V.. - In: E3S WEB OF CONFERENCES. - ISSN 2267-1242. - 197:(2020), p. 07002. ((Intervento presentato al convegno 75th National ATI Congress - #7 Clean Energy for all, ATI 2020 tenutosi a ita nel 2020 [10.1051/e3sconf/202019707002].

An aerostatic pad with an internal pressure control

Lentini L.;Colombo F.;Raparelli T.;Trivella A.;Viktorov V.
2020

Abstract

Because of their almost zero friction and wear, aerostatic pads are widely used in applications where very precise positioning is required. However, this kind of bearing suffers from poor damping and low specific stiffness. This paper presents a new compensation strategy to increase air pad stiffness. This method exploits a custom-built pneumatic valve which can be easily integrated with any commercial pad. The design and the working principle of the proposed system are described and studied with the aid of a lumped parameter model. The effectiveness of the proposed compensation is numerically and experimentally evaluated. The results demonstrate that the solution represents a good and cost-effective method to enhance the static stiffness of aerostatic pads.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2883274