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

作者：Arouette Xavier; Matsumoto Yasuaki; Ninomiya Takeshi; Okayama Yoshiyuki; Miki Norihisa^*

来源：Sensors, 2010, 10(4): 2946-2956.

DOI：10.3390/s100402946

• hydraulic amplification
• liquid encapsulation
• dynamic actuation
• tactile display
• MEMS

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.

• 出版日期2010-4