Trajectory of Elliptical Displacement of L1-B4 Type Linear Ultrasonic Motor using Multilayer Piezoelectric Actuator

In this study, multilayer structured ultrasonic linear motor was simulated using Atila for investigating its optimum driving conditions. The ultrasonic linear motors mainly consist of an ultrasonic vibrator to generate elliptical displacement. The ultrasonic linear motor simulated in this paper was the use of the 1st longitudinal(Ll) and 4th bending vibrations (B4). Whit the increase of the number of piezoelectric actuator layers, displacement of node was increased. Maximum total displacement of node was about at the 13 layered ultrasonic motor under 5 V.