Fast drive of displacement magnification mechanism with flexure hinge using loading type impact damper |
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Authors: | Nobuhiko Henmi Yuta Sumi Michihiko Tanaka |
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Affiliation: | 1.Department of Mechanical Systems Engineering,Shinshu University,Nagano,Japan |
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Abstract: | A displacement magnification mechanism which uses flexure motion guide using elastic hinges can realize smooth frictionless
motion but has poor vibration damping capability. An impact damper is a damping mechanism which uses collision energy to dissipate
vibration energy. If the damper is used for vibration control of the flexure mechanism, it may be able to dissipate unexpected
vibration without killing the merits of the flexure mechanism. In the paper, a loading type impact damper is applied to settle
down transient vibration of a displacement magnification mechanism. We investigate differences of damping effect by setting
conditions of the damper. It is shown that the impact damper can eliminate residual vibration at step response effectively
without steady state error. The experimental displacement magnification mechanism with impact damper can settle down less
than 1/5 of the response without the damper under appropriate setting conditions. Influence of natural frequency ratio between
damper and displacement magnification mechanism is investigated. Influences of indentation at impact point are also examined. |
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