Model reduction techniques for dynamics analysis of ultra-precision linear stage

Xuedong CHEN; Zhixin LI

doi:10.1007/s11465-009-0009-x

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Front. Mech. Eng. ›› 2009, Vol. 4 ›› Issue (1) : 64-70. DOI: 10.1007/s11465-009-0009-x

RESEARCH ARTICLE

Model reduction techniques for dynamics analysis of ultra-precision linear stage

Xuedong CHEN ,
Zhixin LI

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Abstract

Spring-damping elements are used to simplify the internal interaction in the proposed finite element (FE) model of an ultra-precision linear stage. The dynamics behavior is studied. The comparison between mode shapes from the eigenvalue analysis shows that the components, except the translator, can represent system dynamics characteristics. A reduction approach is used to simplify the system in a dynamic studied. There is little difference between the vibration mode and the response analysis. The experimental modal analysis proves the validity of the reduction approach, which can be generalized to the development and dynamics characteristic study of a complex system model to obviously save computational resource.

Keywords

dynamics analysis / air-bearing / linear stage / reduction

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Xuedong CHEN, Zhixin LI. Model reduction techniques for dynamics analysis of ultra-precision linear stage. Front Mech Eng Chin, 2009, 4(1): 64‒70 https://doi.org/10.1007/s11465-009-0009-x

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 50605025) and the National Basic Research Program of China (NO. 2003CB716206).