Active Vibration Isolation System (AVIS) using a voice coil actuator to improve free space optics communication
n Free Space Optic communication (FSOC), transmitter and receiver's alignment is vital to maintain the line of sight during the whole communication period. This is critical in data transmission over a long-distance. Vibration at either receiver or transmitter, causes misalignment and this...
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Main Authors: | , , , |
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Format: | Conference or Workshop Item |
Language: | English English |
Published: |
Institute of Electrical and Electronics Engineers Inc.
2019
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Subjects: | |
Online Access: | http://irep.iium.edu.my/79688/1/79688_Active%20Vibration%20Isolation%20System%20_complete.pdf http://irep.iium.edu.my/79688/2/79688_Active%20Vibration%20Isolation%20System%20_scopus.pdf http://irep.iium.edu.my/79688/ https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8837053 |
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Summary: | n Free Space Optic communication (FSOC),
transmitter and receiver's alignment is vital to maintain the
line of sight during the whole communication period. This is
critical in data transmission over a long-distance. Vibration at
either receiver or transmitter, causes misalignment and this
affects FSOC. In this paper, AVIS, which can actively isolate
FSO devices from low-frequency vibration from the ground, is
designed and developed. The main goal is to reduce vibration
from the top plate of the system where the telescope of the
FSOC system is placed. An analytical model of the active
vibration isolation is derived, and then the real prototype is
fabricated. An imbalance mass system is used as an exciter for
the system. Furthermore, for the cost-saving factor, a voice coil
actuator which is modified from a conventional loudspeaker is
used as an actuator for the system. LQR controller is
implemented by using LabVIEW. The results show that the
displacement level of the system with excitation frequencies 6
Hz, 12 Hz and 18 Hz are reduced more than 85 %. Moreover,
it is proven that the loudspeaker not only costs lower but also
gives a good performance for an AVIS. |
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