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 language | English |
|---|---|
| Title of host publication | Optical Telescopes of Today and Tomorrow |
| Editors | Arne L. Ardeberg |
| Publisher | SPIE |
| Pages | 910-919 |
| Number of pages | 10 |
| ISBN (Print) | 0819422681, 9780819422682 |
| DOIs | |
| Publication status | Published - 21 Mar 1997 |
| Externally published | Yes |
| Event | Optical Telescopes of Today and Tomorrow - Landskrona/Hven, Swed Duration: 29 May 1996 → 29 May 1996 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 2871 |
| ISSN (Print) | 0277-786X |
Conference
| Conference | Optical Telescopes of Today and Tomorrow |
|---|---|
| City | Landskrona/Hven, Swed |
| Period | 29/05/96 → 29/05/96 |
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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 proceeding › Conference contribution
TY - GEN
T1 - Testing of a Magneto-Strictive Actuator for Adaptive Optics
AU - Bigelow, Bruce C.
AU - Walker, David
AU - Nixon, Gil
PY - 1997/3/21
Y1 - 1997/3/21
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.
AB - 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.
KW - telescopes
KW - positioning
KW - focal plane
KW - magneto-strictive actuators
KW - apacitive sensors
KW - eddy-current sensors
KW - deformable mirrors
UR - http://www.scopus.com/inward/record.url?scp=0031364656&partnerID=8YFLogxK
U2 - 10.1117/12.268972
DO - 10.1117/12.268972
M3 - Conference contribution
SN - 0819422681
SN - 9780819422682
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 910
EP - 919
BT - Optical Telescopes of Today and Tomorrow
A2 - Ardeberg, Arne L.
PB - SPIE
ER -