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Abstract: The fully compliant mechanism is a new type of mechanism
which is often used as a micro-positioning stage. However, it is very
hard to make sure that the mechanism has a high positioning accuracy and
a good ability of resisting the external disturbance, if the static
characteristics of the mechanism as the single design objective are
considered during the its structural optimization while ignoring its
dynamic characteristics such as natural frequency. Thus an optimal
design method of the fully compliant mechanism based on its dynamic
characteristics is presented by taking a concrete fully compliant
mechanism i.e. the parallel guided compliant mechanism for example. In
order to realize it, the dynamic model that characterizes this mechanism
is proposed to predict the first order natural frequency, and the finite
element simulation is also adopted to revise the theoretic result. In
addition, although the optimization for the mechanism is based on its
dynamic characteristics, its static ones are also in discussion.
Key words: Compliant mechanism Natural frequency Flexure hinge
Structure optimization
CLC No: TH112.5
国家自然科学基金资助项目(50075010).
Received 20011008, received in revised form 20020510
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