Cryogenic Piezo Characterisation and Integration in Fine Steering Tip/Tilt Mechanism
C. Belly1, M. Hihoud1, A. Pages1, H. Argelaguet2, J. Moreno2, C. Mangeot3
1CEDRAT TECHNOLOGIES, Meylan, France
2LIDAX, Madrid, Spain
3NOLIAC, Kvistgaard, Denmark
High precision cryogenic applications are demanding domains that require precise knowledge of component performance. In the case of active components such as piezoelectric actuators, such knowledge includes stroke, capacitance and Coefficient of Thermal Expansion (CTE). These parameters are difficult to define with precision because of the combination of small displacements and low temperature sensor compatibilities. A high stability and low sensibility test bench is required to obtain such results.
This paper details a test bench design and the results obtained with CNES on a two piezo ceramics stacks, from 2 distinct suppliers. Integration into dedicated cryo actuators is also proposed as well as the associated cryo performances. The use of such cryo compatible actuators is detailed in a fine steering tip-tilt mechanism designed to reach very high resolution and stability for the ESA EChO space mission.
ACTUATOR 2014 Manuscript Poster 10
Publication date: 09/04/2015
Manuscript Poster 10 published in Conference Proceedings ACTUATOR 2014
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