Actions for Strain gauge ambiguity sensor for segmented mirror active optical system

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Strain gauge ambiguity sensor for segmented mirror active optical system

Author
Howe, T. L.
Published
Oct 22, 1974.
Physical Description
1 electronic document
Additional Creators
Wyman, C. L.
Online Version

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Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
A system is described to measure alignment between interfacing edges of mirror segments positioned to form a segmented mirror surface. It serves as a gauge having a bending beam with four piezoresistive elements coupled across the interfaces of the edges of adjacent mirror segments. The bending beam has a first position corresponding to alignment of the edges of adjacent mirror segments, and it is bendable from the first position in a direction and to a degree dependent upon the relative misalignment between the edges of adjacent mirror segments to correspondingly vary the resistance of the strain guage. A source of power and an amplifier are connected in circuit with the strain gauge whereby the output of the amplifier varies according to the misalignment of the edges of adjacent mirror segments.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19750004201.
Accession ID: 75N12273.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15972836