Sensors 2010, 10(4), 2946-2956; doi:10.3390/s100402946
Article

Dynamic Characteristics of a Hydraulic Amplification Mechanism for Large Displacement Actuators Systems

School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa, 223-8522, Japan
* Author to whom correspondence should be addressed.
Received: 1 January 2010; in revised form: 23 February 2010 / Accepted: 9 March 2010 / Published: 29 March 2010
(This article belongs to the Special Issue Advances in Actuators)
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Abstract: We have developed a hydraulic displacement amplification mechanism (HDAM) and studied its dynamic response when combined with a piezoelectric actuator. The HDAM consists of an incompressible fluid sealed in a microcavity by two largely deformable polydimethylsiloxane (PDMS) membranes. The geometry with input and output surfaces having different cross-sectional areas creates amplification. By combining the HDAM with micro-actuators, we can amplify the input displacement generated by the actuators, which is useful for applications requiring large deformation, such as tactile displays. We achieved a mechanism offering up to 18-fold displacement amplification for static actuation and 12-fold for 55 Hz dynamic actuation.
Keywords: hydraulic amplification; liquid encapsulation; dynamic actuation; tactile display; MEMS

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MDPI and ACS Style

Arouette, X.; Matsumoto, Y.; Ninomiya, T.; Okayama, Y.; Miki, N. Dynamic Characteristics of a Hydraulic Amplification Mechanism for Large Displacement Actuators Systems. Sensors 2010, 10, 2946-2956.

AMA Style

Arouette X, Matsumoto Y, Ninomiya T, Okayama Y, Miki N. Dynamic Characteristics of a Hydraulic Amplification Mechanism for Large Displacement Actuators Systems. Sensors. 2010; 10(4):2946-2956.

Chicago/Turabian Style

Arouette, Xavier; Matsumoto, Yasuaki; Ninomiya, Takeshi; Okayama, Yoshiyuki; Miki, Norihisa. 2010. "Dynamic Characteristics of a Hydraulic Amplification Mechanism for Large Displacement Actuators Systems." Sensors 10, no. 4: 2946-2956.

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