A linear ultrasonic motor was designed using a combination of the first longitudinal and the fourth bending mode. The motor consisted of a straight metal bar bonded with a piezo-ceramic element as a driving element. The resulting displacement was amplified by two teeth and transmitted by the frictional force between the motor and the rail in a linear motion. The basic design is discussed and simulations are compared with the experimental results.
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Bein et al. (1997) studied this question.
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