Ciliary Vibration Drive Mechanism for Active Scope Cameras
Masashi Konyo*, Kazuya Isaki*, Kazunari Hatazaki*,
Satoshi Tadokoro*, and Fumiaki Takemura**
*Graduate School of Information Sciences, Tohoku University, 6-6-01 Aramaki-Aza Aoba, Aoba-ku, Sendai 980-8579, Japan
**Department of Mechanical Systems Engineering, Okinawa National College of Technology, 905 Aza Henoko, Nago, Okinawa 905-2192, Japan
The active scope camera we proposed has active mobility using a ciliary vibration drive mechanism for long flexible cables. The physical details have yet to be clarified. We determined it based on detailed physical phenomena to design an optimal ciliary vibration drive. We discuss the reasons for design efficiency based on the analysis of dynamic models of ciliary parts, focusing on (1) the characteristic vibration of the cilia and (2) stick-slip contact. We constructed a pseudo linear spring model and a stick-slip friction model to evaluate these phenomena. We determined optimal driving vibration frequencies and the inclined angle of cilia through experiments and analysis. Qualitative comparisons with the dynamic models and the results of experiments indicated the effective physical factors of the activation mechanism. A prototype of the active scope camera showed good performance in practical rescue activities.
-  S. Hirose, “Biologically Inspired Robots: Snake-like Locomotors and Manipulators,” Oxford University Press, 1993.
-  S.Hirose, T. Mitsui, and K. Suyama, “Design of In-pipe Inspection Vehicles for φ25, φ50, φ150 pipes,” Proc. IEEE Int. Conf. on Robotics and Automation, pp. 2309-2314, 1999.
-  H. Kimura, S. Hirose, and K. Shimizu, “Stuck Evasion Control for Active-wheel Passive-joint Snake-like Mobile Robot ‘Genbu’,” Proc. IEEE Int. Conf. on Robotics and Automation, pp. 5087-5092, 2004.
-  M. Mori and S. Hirose, “Locomotion of 3D Snake-Like Robots —Shifting and Rolling Control of Active Cord Mechanism ACM-R3— ,” Journal of Robotics and Mechatronics, Vol.18, No.5, pp. 521-528, 2006.
-  B. Klaassen and K. L. Paap, “GMD-SNAKE2: A Snake-Like Robot Driven by Wheels and a Method for Motion Control,” Proc. IEEE Int. Conf. on Robotics and Automation, pp. 3014-3019, 1999.
-  S. G. Roh, S. M. Ryew, and H. R. Choi, “Development of Differentially Driven Inpipe Inspection Robot for Underground Gas Pipelines,” Proc. the 32nd Int. Symposium on Robotics, pp. 165-170, 2001.
-  A. M. Bertetto and M. Ruggiu, “In-pipe Inch-worm Pneumatic Flexible Robot,” Proc. IEEE/ASME Int. Conf. on Advanced Intelligent Mechatronics, pp. 1226-1231, 2001.
-  S. Wakimoto, K. Suzumori, M. Takeda, and J. Nakajima, “In-Pipe Insection Micro Robot Adaptable to Changes in Pipe Diameter,” Journal of Robotics and Mechatronics, Vol.15, No.6, pp. 609-615, 2003.
-  T. Hatsuzawa, M. Hayase, and O. Toshiaki, “A linear actuator based on cilia vibration,” Sensors & Actuators: A. Physical, Vol.105, No.2, pp. 183-189, 2003.
-  T. Fukuda, N. Mitsumoto, F. Arai, and H. Matsuura, “A study on Micro Robot (1st Report, Design, Experiment and Mathematical Model of Micro Mobile Robot),” Transactions of the Japan Society of Mechanical Engineers, Vol.59, No.562, pp. 1787-1794, 1993.
-  K. Ioi, “A Mobile Micro-Robot Using Centrifugal Forces,” IEEE/ASME Int. Conf. on Advanced Intelligent Mechatronics, pp. 736-741, 1999.
-  K. Isaki, A. Niitsuma, M. Konyo, F. Takemura, and S. Tadokoro, “Development of an Active Flexible Cable Driven by Ciliary Vibration Mechanism,” Proc. 10th Int. Conf. on New Actuators, pp. 219-222, 2006.
-  K. Isaki, A. Niitsuma, M. Konyo, F. Takemura, and S. Tadokoro, “Development of an Active Flexible Cable by Ciliary Vibration Drive for Scope Camera,” IEEE/RSJ Int. Conf. on Intelligent Robots and Systems, pp. 3946-3951, 2006.
-  K. Hatazaki, M. Konyo, K. Isaki, S. Tadokoro, and F. Takemura, “Active Scope Camera for Urban Search and Rescue,” IEEE/RSJ Int. Conf. on Intelligent Robots and Systems, pp. 2596-2602, 2007.
-  B. Armstrong-Helouvry, P. Dupont, and C. C. De Wit, “A survey of models, analysis tools and compensation methods for the control of machines with friction,” Automatica, 30(7), pp. 1083-1138, 1994.
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