CUED Publications database

A pneumatic actuator based on vibration friction reduction with bending/longitudinal vibration mode

Gao, H and De Volder, M and Cheng, T and Bao, G and Reynaerts, D (2016) A pneumatic actuator based on vibration friction reduction with bending/longitudinal vibration mode. Sensors and Actuators, A: Physical, 252. pp. 112-119. ISSN 0924-4247

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Abstract

© 2016 Elsevier B.V. Piston–cylinder pneumatic actuators are widely applied in various fields of automation and robotics. The sealing rings comprised in these actuators unfortunately introduce friction and affect the positioning accuracy and output force. In this work, piezoelectric actuators are built in the pneumatic actuators to introduce vibrations with lower friction force. The friction reduction effect is compared between the bending vibration mode at a resonant frequency of 1.272 kHz and the longitudinal vibration mode at a frequency of 12.133 kHz. The pneumatic actuator has a bore diameter of 6.4 mm and a stroke of 13 mm. A static/dynamic friction force measurement system is established and the test results show a maximum 66.7% reduction of stiction force and a 50.8% reduction of dynamic friction force in bending vibration mode. And the friction reduction effect also happens in the longitudinal vibration mode, with a 47.4% reduction of stiction force and a 29.7% reduction of dynamic friction force.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div E > Production Processes
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:19
Last Modified: 16 Nov 2017 02:19
DOI: