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http://dx.doi.org/10.5050/KSNVE.2016.26.5.546

Improvement for Response Delays of Displacement Magnifier in Jetting Dispenser  

Ha, Myeong-Woo (Department of Mechanical Engineering, Inha University)
Lee, Kwang-Hee (Department of Mechanical Engineering, Inha University)
Hong, Seung-Min (PROTEC. CO. LTD)
Lee, Chul-Hee (Department of Mechanical Engineering, Inha University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.26, no.5, 2016 , pp. 546-551 More about this Journal
Abstract
The objective of this study is to investigate the response delays between piezo-stack actuator and the displacement magnifier of jetting dispenser and to reduce its falling time in terms of displacement optimization. The dispenser is driven by the dual piezo-stack actuators with a hinge lever mechanism to precisely control flow rate of the working fluid (3000 cP). It is commonly found that piezo actuator-driven jetting dispensers involving viscous working fluids have displacement optimization problem for ideal performance. The response delay of the system is caused by the phenomenon that the displacement magnifier cannot exactly follow the motion of the piezo actuators. The response delay may lower the performance of the system due to the inaccurate discharge of working fluid or even damages to the system itself due to inharmonious motion of piezo actuators with lever system. To reduce its response delay, a new displacement profile obtained from displacement optimization is suggested; its performance is tested through finite element analysis; and experiments are carried out to verify the performance of the obtained displacement profile.
Keywords
Response Delay; Jetting Dispenser; Displacement Magnifier; Displacement Profile;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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