Testing of a Magneto-Strictive Actuator for Adaptive Optics

Bruce C. Bigelow, David Walker, Gil Nixon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We have previously proposed the use of commercially available actuators and displacement sensors for use in the control of large deformable secondary mirrors. We have identified the magneto-strictive (MS) actuator as a promising candidate based on manufacturer's specifications for stroke, power consumption, and service life. We have identified both capacitive and eddy-current displacement sensors as possible choices for completing the required control loop around the actuators. The purpose of the tests described here was to characterize the performance of a MS actuator in terms of hysteresis, linearity, power consumption, heat dissipation, and frequency response, and to confirm the manufacturer's specifications for longevity. The purpose of the sensor testing was to compare their performance in terms of frequency response and packaging constraints. Results of the testing program are presented.

Original languageEnglish
Title of host publicationOptical Telescopes of Today and Tomorrow
EditorsArne L. Ardeberg
PublisherSPIE
Pages910-919
Number of pages10
ISBN (Print)0819422681, 9780819422682
DOIs
Publication statusPublished - 21 Mar 1997
Externally publishedYes
EventOptical Telescopes of Today and Tomorrow - Landskrona/Hven, Swed
Duration: 29 May 199629 May 1996

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2871
ISSN (Print)0277-786X

Conference

ConferenceOptical Telescopes of Today and Tomorrow
CityLandskrona/Hven, Swed
Period29/05/9629/05/96

Fingerprint

Adaptive optics
Adaptive Optics
adaptive optics
Actuator
Actuators
actuators
Testing
Frequency Response
Sensor
frequency response
Power Consumption
Frequency response
specifications
sensors
Sensors
Electric power utilization
Specification
Specifications
service life
Eddy Currents

Cite this

Bigelow, B. C., Walker, D., & Nixon, G. (1997). Testing of a Magneto-Strictive Actuator for Adaptive Optics. In A. L. Ardeberg (Ed.), Optical Telescopes of Today and Tomorrow (pp. 910-919). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2871). SPIE. https://doi.org/10.1117/12.268972
Bigelow, Bruce C. ; Walker, David ; Nixon, Gil. / Testing of a Magneto-Strictive Actuator for Adaptive Optics. Optical Telescopes of Today and Tomorrow. editor / Arne L. Ardeberg. SPIE, 1997. pp. 910-919 (Proceedings of SPIE - The International Society for Optical Engineering).
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abstract = "We have previously proposed the use of commercially available actuators and displacement sensors for use in the control of large deformable secondary mirrors. We have identified the magneto-strictive (MS) actuator as a promising candidate based on manufacturer's specifications for stroke, power consumption, and service life. We have identified both capacitive and eddy-current displacement sensors as possible choices for completing the required control loop around the actuators. The purpose of the tests described here was to characterize the performance of a MS actuator in terms of hysteresis, linearity, power consumption, heat dissipation, and frequency response, and to confirm the manufacturer's specifications for longevity. The purpose of the sensor testing was to compare their performance in terms of frequency response and packaging constraints. Results of the testing program are presented.",
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Bigelow, BC, Walker, D & Nixon, G 1997, Testing of a Magneto-Strictive Actuator for Adaptive Optics. in AL Ardeberg (ed.), Optical Telescopes of Today and Tomorrow. Proceedings of SPIE - The International Society for Optical Engineering, vol. 2871, SPIE, pp. 910-919, Optical Telescopes of Today and Tomorrow, Landskrona/Hven, Swed, 29/05/96. https://doi.org/10.1117/12.268972

Testing of a Magneto-Strictive Actuator for Adaptive Optics. / Bigelow, Bruce C.; Walker, David; Nixon, Gil.

Optical Telescopes of Today and Tomorrow. ed. / Arne L. Ardeberg. SPIE, 1997. p. 910-919 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2871).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - Testing of a Magneto-Strictive Actuator for Adaptive Optics

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N2 - We have previously proposed the use of commercially available actuators and displacement sensors for use in the control of large deformable secondary mirrors. We have identified the magneto-strictive (MS) actuator as a promising candidate based on manufacturer's specifications for stroke, power consumption, and service life. We have identified both capacitive and eddy-current displacement sensors as possible choices for completing the required control loop around the actuators. The purpose of the tests described here was to characterize the performance of a MS actuator in terms of hysteresis, linearity, power consumption, heat dissipation, and frequency response, and to confirm the manufacturer's specifications for longevity. The purpose of the sensor testing was to compare their performance in terms of frequency response and packaging constraints. Results of the testing program are presented.

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KW - positioning

KW - focal plane

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KW - apacitive sensors

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Bigelow BC, Walker D, Nixon G. Testing of a Magneto-Strictive Actuator for Adaptive Optics. In Ardeberg AL, editor, Optical Telescopes of Today and Tomorrow. SPIE. 1997. p. 910-919. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.268972