Characteristics and attenuation mechanism of linear standing-wave piezoelectric motors with ceramics-mated friction couples

• Published in: Tribology international Vol. 153; p. 106580
• Main Authors: Zhang, Yanhu, Fu, Yonghong, Hua, Xijun, Quan, Li, Qu, Jianjun
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.01.2021; Elsevier BV
• Subjects: Energy methods; Friction; Motor operations; Performance evaluation; Piezoelectric motors; Stability; Standing wave; Standing waves; Stators; Ultrasonic vibration; Wave attenuation; Piezoelectric motors; Stability; Motor operations; Standing wave
• ISSN: 0301-679X; 1879-2464
• DOI: 10.1016/j.triboint.2020.106580

A homemade testing device is used to measure the operating speed of linear piezoelectric motors with different friction couples that consist of ceramic stator tip and slider. The dynamic variations of motor performance are analyzed using a statistical method, and the attenuation mechanism is discussed using the energy method during the periodic contact between the driving tip of the stator and the slider. Study of the operating characteristics of piezoelectric motors can clarify the change and transformation of the stator/slider contact by reflecting the driving process, wear, and service lifespan of the contact interface of friction couples under ultrasonic vibration. This study is significant for the performance evaluation of the operations and alternation of friction materials for standing-wave piezoelectric motors. •The dynamic variations of motor performance are analyzed using a statistical method.•The attenuation mechanism is discussed using the energy method during the periodic contact.•The factors to evaluate the steady-state operations of piezoelectric motors is defined.•Friction characteristics of ceramic couples are compared for SWUM operations.