Tribological property investigation on a novel pneumatic actuator with integrated piezo actuators

Autor:	Farid Al-Bender, Cheng Tinghai, Dominiek Reynaerts, Michael De Volder, Gang Bao, Hang Gao
Rok vydání:	2015
Předmět:	Engineering Pneumatic actuator business.industry Mechanical Engineering Mechanical engineering Surfaces and Interfaces Tribology Piezoelectricity Surfaces Coatings and Films Vibration Microactuator Mechanics of Materials Normal mode Actuator business Leakage (electronics)
Zdroj:	Tribology International. 86:72-76
ISSN:	0301-679X
DOI:	10.1016/j.triboint.2015.01.021
Popis:	Pneumatic piston–cylinder actuators are commonly used in industry for a variety of automation and robotics applications. In order to suppress leakage, these actuators comprise seal rings which unfortunately introduce friction and affect the positioning accuracy and output force. This article investigates vibrations of the seal generated by integrated piezo actuators to reduce friction force. For this, two piezoelectric stacks are integrated in the cylinder and used to excite vibration modes. This concept was studied in a compact cylinder pneumatic actuator with a bore diameter of 5 mm and a stroke of 10 mm. Dry friction measurement shows a 52% reduction from the original friction force at a driving frequency of 18.29 kHz and vibration amplitude of 0.05 μm. In the wet friction experiments, the friction force can be reduced by 54% from the original wet friction with vibrations at amplitude of 0.04 μm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5bf6b083dcdbe48bbc1b534f8b577207 https://doi.org/10.1016/j.triboint.2015.01.021 Zobrazit plný text záznamu Full Text from ScienceDirect