Shape control of spacecraft antenna reflector using lead-free piezoelectric actuators

C. K. Susheel, Rajeev Kumar, Vishal S. Chauhan, Rahul Vaish

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The spacecraft antenna reflector orbiting in the space environment would be exposed to continuous variation in both temperature level and temperature distribution because of the variation of solar radiation and shadowing conditions (temperature varies from-80 to 180 °C). The thermally induced structural responses would occur with the variations of the on-orbit thermal loads. Thermal induced deformation could adversely affect the performance of antenna reflector. The thermally induced deformation can be controlled using lead-based piezoelectric actuator. In the last few decades, these lead-based piezoelectric ceramics are used abundantly due to their superior performance. However, these lead-based piezoelectric ceramics are toxic in nature and cause severe health and environmental problems during its fabrication. In this study, thermally induced deformations in the antenna reflector are controlled using lead-free piezoelectric ceramics. Finite element formulation of layered composite antenna reflector has been presented to predict the deformation. Further beam shaping and beam steering of the antenna reflector through the piezoelectric actuator has been demonstrated. Finally active shape control of antenna reflector has been demonstrated by optimising the size and location of piezoelectric patches and the applied electric potential.

Original languageEnglish
Pages (from-to)199-216
Number of pages18
JournalEuropean Journal of Computational Mechanics
Volume23
DOIs
StatePublished - 2 Nov 2014
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015 Taylor and Francis.

Funding

Rahul Vaish acknowledges DST, New Delhi, India for financial support through INSPIRE Faculty Award-2011.

FundersFunder number
Department of Science and Technology, Ministry of Science and Technology, India

    Keywords

    • Finite element modelling
    • active shape control
    • antenna reflector
    • lead-free piezoelectric ceramics

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