四棱锥单元平板式可展开收拢机构的

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2010, Vol. 31 ›› Issue (6): 1257-1265.

• Material Engineering and Mechanical Manufacturing • Previous Articles Next Articles

Kinematic Analysis of a Plane Deployable Mechanism Assembled by Four Pyramid Cells

Yang Yi, Ding Xilun

School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics

Received:2009-05-21 Revised:2009-11-04 Online:2010-06-25 Published:2010-06-25
Contact: Yang Yi

Abstract

Abstract: A new four pyramid cell mechanism based on a spatial seven-linkage loop mechanism is proposed in this article which can be employed to assemble large deployable mechanisms. The mobility, kinematics and singularity characteristics of this cell mechanism are analyzed and the assembling method is provided. Based on this kind of cells, a new plane deployable mechanism is designed and its retractable ratio calculated. The results show that these cells are easy to be assembled into a large structure of deployable mechanism. The mobility of the assembled mechanism is only one, and thus its fold deployment is well controllable. When the mechanism is wholly deployed, it has good mechanic performance due to its singularity. Large deployable mechanisms can be designed by these cells and they have a good prospect in aeronautic and astronautic engineering.

Key words: deployable mechanism, screw theory, mobility, kinematics, singularity

CLC Number:

V414
TH112.1

Yang Yi;Ding Xilun. Kinematic Analysis of a Plane Deployable Mechanism Assembled by Four Pyramid Cells[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2010, 31(6): 1257-1265.

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Kinematic Analysis of a Plane Deployable Mechanism Assembled by Four Pyramid Cells

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