@misc{a8ea93e955234972b44fda4284e12e62,
title = "A new flextensional piezoelectric ultrasonic motor-Design, fabrication and characterisation",
abstract = "This paper presents the techniques used for the characterisation of a new type of standing-wave piezoelectric ultrasonic motor. The motor uses a metallic flextensional amplifier, or {"}cymbal{"}, to convert the radial mode vibrations of a piezoelectric ceramic disc into flexural oscillations, which are further converted to produce rotary actuation by means of an elastic fin friction drive. The motor operates on a single-phase electrical supply. A beryllium copper rotor design with three-fin configuration was adopted. The best stall torque, no load speed, transient time and efficiency for a 25 mm motor were 2 N mm, 680 rpm, 2 ms and 4.8\%, respectively. The operational characteristics of the motor were evaluated by using two methods: one based on the pulley-brake principle and one on high-speed imaging. The results obtained from using these two techniques are contrasted and compared.",
keywords = "Flextensional amplifier, High-speed imaging, Pulley-brake, Torque measurement, Ultrasonic motor",
author = "Leinvuo, \{J. T.\} and Wilson, \{S. A.\} and Whatmore, \{R. W.\} and Cain, \{M. G.\}",
year = "2007",
month = jan,
day = "8",
doi = "10.1016/j.sna.2006.04.010",
language = "English",
volume = "133",
series = "Sensors and Actuators, A: Physical",
publisher = "Elsevier B.V.",
edition = "1",
type = "Other",
}