Modelling and identification of a planar standing wave ultrasonic motor

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Pigache, François | Giraud, Frédéric | Lemaire-Semail, Betty

Edité par HAL CCSD ; EDP Sciences

International audience. The aim of this paper is to define a linear model of a planar standing wave ultrasonic motor (SWUM). First, the analytical approach using the variational formulation is presented. An identification method is deduced to find the parameters of a vibrating rectangular plate. Non-linearities are also emphasized and verified by the experimental measurements. Secondly, the mechanical energy conversion of the actuator is identified, using an average behavior modelling and a linear approach for the contact interaction. Finally, a complete modelling of the actuator is presented, using the Causal Ordering Graph formalism.

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