AN ANALYTICAL AND EXPERIMENTAL STUDY OF ULTRASONIC LINEAR MOTORS

作者：Velazquez Ramiro^*; Hernandez Hermes; Gutierrez Carlos A; Rodrigo Pedro

来源：Tehnicki Vjesnik, 2015, 22(4): 1057-1063.

DOI：10.17559/tv-20140107012331

• linear actuator
• modelling
• numerical simulation
• piezoelectric motor
• principle of inertia
• transducer
• ultrasonic linear motor (ULM)

Ultrasonic linear motors (ULMs) are widely used in many industrial applications and a full characterization of their behaviour is often needed. This paper presents a detailed analytical-experimental study of ULMs. First, the general structure and operation principle of ULMs are introduced. The actuator mechanics is then described using a simple piezoelectric model. Since, in practice, ULMs are most often used as actuators for positioning mechanisms, the proposed model includes electromechanical relations which offer designers a broad range of possibilities for precise positioning and reliable model-based control. Finally, ULMs are experimentally investigated to determine the conditions that allow an optimal performance.

• 出版日期2015-8