Peng-hui CHENG. Research on dynamic characteristics of space camera focusing platform[J]. Optics and precision engineering, 2019, 27(3): 602-609.
DOI:
Peng-hui CHENG. Research on dynamic characteristics of space camera focusing platform[J]. Optics and precision engineering, 2019, 27(3): 602-609. DOI: 10.3788/OPE.20192703.0602.
Research on dynamic characteristics of space camera focusing platform
Focusing mechanism is a key part of space cameras. Its dynamic performance greatly affects camera reliability. To analysis the dynamic characteristics
the focusing mechanism platform of a space camera was researched in simulation
where its entry point was the guide
and the model of the guide joint was built with the optimized tandem spring damping element in the finite element model of the focusing mechanism platform. The research obtained dynamic parameters based on the Hertzian contact theory and equalizes the rigidity of the ball screw and the coupling on the guide
and formulates the relation expression and corrected parameter. The corrected parameter was confirmed by a comparative experiment based on the variable of the coupling stiffness
thereby completing the dynamic analysis of the space camera focusing platform. Finally
the research accomplishes the dynamic simulation analysis of the focusing platform with the stated analysis method under different conditions
with a deviation of under 2%
thus demonstrating high accuracy and reliability of the analysis method.
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