Design and test of a micro-displacement actuator based on giant magnetostrictive material

Liang Shao; Dehua Yang; Bintang Yang; Kunxin Chen

doi:10.1117/12.840039

20 October 2009 Design and test of a micro-displacement actuator based on giant magnetostrictive material

Liang Shao, Dehua Yang, Bintang Yang, Kunxin Chen

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74933U (2009) https://doi.org/10.1117/12.840039
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

Abstract

To meet the performance requirements of co-focusing and co-phasing of segmented mirror active optics (SMAO) in modern astronomical telescope, micro-displacement actuators with nanometer resolution and millimeter stroke are necessary. The design and test of a micro-displacement actuator based on giant magnetostrictive material is present in this paper. The actuator's main components, such as giant magnetostrictive drive core, displacement pantograph mechanism and output guide mechanism, are discussed in detailed. The giant magnetostrictive drive mechanism generally may offer nanometer resolution and micron stroke. A displacement/stroke pantograph mechanism is designed with absolutely sealed flexible hydraulic structure (ASFHS) to enlarge the stroke. In addition, a secondary giant magnetostrictive drive mechanism is integrated to serve final resolution of final displacement output. In view of flexure exhibiting excellent mechanical properties free of friction, clearance and lubrication, a flexure guide mechanism with the capacity of excellent lateral load is designed to fulfill linear displacement output steadily. The sub-systems like the giant magnetostrictive drive core and displacement pantograph mechanism have been tested before integration of the whole actuator. The final test of the actuator is carried out with dual frequency laser interferometer at lab. Besides, to meet technical requirements of future extremely large telescope, further development issues mainly related to application practice of the actuator is discussed at the end.

Citation Download Citation

Liang Shao, Dehua Yang, Bintang Yang, and Kunxin Chen "Design and test of a micro-displacement actuator based on giant magnetostrictive material", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74933U (20 October 2009); https://doi.org/10.1117/12.840039

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
11 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Actuators

Prototyping

Magnetostrictive materials

Astronomical telescopes

Mirrors

Active optics

Astronomical imaging

Show All Keywords

Keywords/Phrases

Search In:

Publication Years