Multi-sensor control for precise assembly of optical components

Chinese Journal of Aeronautics. 2014;27(3):613-621 DOI 10.1016/j.cja.2014.01.001


Journal Homepage

Journal Title: Chinese Journal of Aeronautics

ISSN: 1000-9361 (Print)

Publisher: Elsevier

Society/Institution: China Society of Aeronautics and Astronautics & Beihang University

LCC Subject Category: Technology: Motor vehicles. Aeronautics. Astronautics

Country of publisher: China

Language of fulltext: English

Full-text formats available: PDF, HTML



Ma Li (School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, China)
Rong Weibin (State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China)
Sun Lining (State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China)


Double blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 28 weeks


Abstract | Full Text

In order to perform an optical assembly accurately, a multi-sensor control strategy is developed which includes an attitude measurement system, a vision system, a loss measurement system and a force sensor. A 3-DOF attitude measuring method using linear variable differential transformers (LVDT) is designed to adjust the relation of position and attitude between the spherical mirror and the resonator. A micro vision feedback system is set up to extract the light beam and the diaphragm, which can achieve the coarse positioning of the spherical mirror in the optical assembly process. A rapid self-correlation method is presented to analyze the spectrum signal for the fine positioning. In order to prevent the damage of the optical components and realize sealing of the resonator, a hybrid force-position control is constructed to control the contact force of the optical components. The experimental results show that the proposed multi-sensor control strategy succeeds in accomplishing the precise assembly of the optical components, which consists of parallel adjustment, macro coarse adjustment, macro approach, micro fine adjustment, micro approach and optical contact. Therefore, the results validate the multi-sensor control strategy.