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

Sensors

Xavier Arouette¹  Yasuaki Matsumoto¹  Takeshi Ninomiya¹  Yoshiyuki Okayama¹ 

[1] School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa, 223-8522, Japan;

关键词: hydraulic amplification;    liquid encapsulation;    dynamic actuation;    tactile display;    MEMS;   

DOI  :  10.3390/s100402946

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.