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Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 803912, 16 pages
http://dx.doi.org/10.1155/2012/803912
Research Article

Fuzzy Control and Connected Region Marking Algorithm-Based SEM Nanomanipulation

1State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China
2School of Automation, Harbin University of Science and Technology, Harbin 150080, China

Received 14 September 2012; Accepted 18 October 2012

Academic Editor: Peng Shi

Copyright © 2012 Dongjie Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The interactive nanomanipulation platform is established based on fuzzy control and connected region marking (CRM) algorithm in SEM. The 3D virtual nanomanipulation model is developed to make up the insufficiency of the 2D SEM image information, which provides the operator with depth and real-time visual feedback information to guide the manipulation. The haptic device Omega3 is used as the master to control the 3D motion of the nanopositioner in master-slave mode and offer the force sensing to the operator controlled with fuzzy control algorithm. Aiming at sensing of force feedback during the nanomanipulation, the collision detection method of the virtual nanomanipulation model and the force rending model are studied to realize the force feedback of nanomanipulation. The CRM algorithm is introduced to process the SEM image which provides effective position data of the objects for updating the virtual environment (VE), and relevant issues such as calibration and update rate of VE are also discussed. Finally, the performance of the platform is validated by the ZnO nanowire manipulation experiments.