Eur. Phys. J. Appl. Phys. 34, 55-65 (2006)
https://doi.org/10.1051/epjap:2006033

Modelling and identification of a planar standing wave ultrasonic motor

Identification of a planar actuator

Laboratoire d'Électrotechnique et d'Électronique de Puissance de Lille (L2EP), Project ALCOVE-INRIA IRCICA, Polytech'Lille, Bât. E, avenue Paul Langevin, 59655 Villeneuve d'Ascq, France

Corresponding author: francois.pigache@polytech-lille.fr

Received: 18 July 2005
Revised: 23 January 2006
Accepted: 1 February 2006
Published online: 4 May 2006

Abstract

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.