As one of the best solutions for future space communication, free space optical communication possesses such advantages as high data rate, large capacity and high secrecy as compared with microwave communication. However, the extremely narrow beam width calls for severe acquisition, pointing and tracking requirements. As a key component of laser beam Acquisition, Pointing, and Tracking (APT) system for free space optical communication, the compact Fine Pointing Steering Mirror (FPSM) determines the performances of the communication system. This paper presents a new type structural design of FPSM — a piezoelectrically-driven micro-positioning deflective mechanism where the tilt movements are implemented by the elastic deformation of flexible rings. It provides fast and precise control in tilt movements around X-axis and Y-axis. The mechanism is machined from one solid alloy steel block cut by wire-EDM (electric discharge machining). The flexure rings promise zero friction, zero clearance and excellent guiding accuracy. The mirror, 36mm in diameter, is driven by four piezoelectric actuators (two pairs) spaced at 90° intervals. Each actuator pair works as a unit in push/pull mode. The differential design exhibits excellent angular stability over a wide temperature range. The stiffness model of the flexible ring was setup through the analysis of structural mechanics. The FSPM has been simplified to springs-particle system. A dynamic model was then presented based on Lagrange Equation, and modal analysis and experiments were then performed. Dynamic calculation demonstrates that the first order, the second order and the natural frequency of the FSPM is 1.278 KHz, 1.653 KHz and 1.653 KHz. Modal analysis shows that the first, second and third order natural frequency is 1.308 KHz, 1.525 KHz and 1.530 KHz. The experimental test displays that the first, second and third order natural frequency of the FPSM is 1.28 KHz, 1.56 KHz and 1.58 KHz. The error between three of methods is less than 10%. It demonstrates that the novel FSPM has excellent performance and can meet the dynamic requirements for establishing optical communication link.
Skip Nav Destination
2007 First International Conference on Integration and Commercialization of Micro and Nanosystems
January 10–13, 2007
Sanya, Hainan, China
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4265-7
PROCEEDINGS PAPER
Structure Design, Dynamic Analysis and Test of FPSM of APT System in Free Space Laser Communication
Li-Ning Sun,
Li-Ning Sun
Harbin Institute of Technology, Harbin, China
Search for other works by this author on:
Bing Shao,
Bing Shao
Harbin Institute of Technology, Harbin, China
Search for other works by this author on:
Dong-Sheng Qu
Dong-Sheng Qu
Harbin Institute of Technology, Harbin, China
Search for other works by this author on:
Li-Ning Sun
Harbin Institute of Technology, Harbin, China
Bing Shao
Harbin Institute of Technology, Harbin, China
Dong-Sheng Qu
Harbin Institute of Technology, Harbin, China
Paper No:
MNC2007-21054, pp. 273-280; 8 pages
Published Online:
June 8, 2009
Citation
Sun, L, Shao, B, & Qu, D. "Structure Design, Dynamic Analysis and Test of FPSM of APT System in Free Space Laser Communication." Proceedings of the 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems. First International Conference on Integration and Commercialization of Micro and Nanosystems, Parts A and B. Sanya, Hainan, China. January 10–13, 2007. pp. 273-280. ASME. https://doi.org/10.1115/MNC2007-21054
Download citation file:
7
Views
Related Proceedings Papers
Related Articles
Structural Design of Production Risers and Offshore Production Terminals
J. Energy Resour. Technol (June,1980)
Profiles of Two JOMAE Associate Editors (A Continuing Series)
J. Offshore Mech. Arct. Eng (October,2021)
Design Sensitivity Analysis of Planar Mechanism and Machine Dynamics
J. Mech. Des (July,1981)
Related Chapters
Multiscale Methods for Lightweight Structure and Material Characterization
Advanced Multifunctional Lightweight Aerostructures: Design, Development, and Implementation
Subsection NB—Class 1 Components
Companion Guide to the ASME Boiler and Pressure Vessel Code, Volume 1, Fourth Edition
Structural Design and Analysis of a Deployable Truss-type Satellite Platform
International Conference on Control Engineering and Mechanical Design (CEMD 2017)