Title :
Effect of hardness of frictional materials on properties of ultrasonic motors
Author :
DING, Qing-jun ; YANG, Lin ; Zhao, Chun-sheng
Author_Institution :
Precision Driving Lab., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing
Abstract :
In this paper, PTFE composite, epoxy composite, phenolic composites, hard aluminum, cemented carbide as friction materials are respectively paired to ultrasonic motors, with the stator composed by phosphor bronze and piezoelectric ceramic. Mechanical properties and transient characteristics of ultrasonic motors are tested. The results show a monotonic increase in rotation speed, and a monotonic decrease in stalling torque with friction materials´ hardness. There is little effect of friction materials´ hardness on the transient performance of ultrasonic motors.
Keywords :
friction; hardness; ultrasonic motors; Al; PTFE composite; cemented carbide; epoxy composite; frictional materials; hard aluminum; hardness; phenolic composites; phosphor bronze; piezoelectric ceramic; rotation speed; stalling torque; ultrasonic motors; Aluminum; Building materials; Ceramics; Composite materials; Friction; Mechanical factors; Phosphors; Piezoelectric materials; Stators; Testing; Ultrasonic motor; friction material; hardness; mechanical property; transient performance;
Conference_Titel :
Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-2891-5
DOI :
10.1109/SPAWDA.2008.4775826
