2002 Fiscal Year Final Research Report Summary
Scaling Problem for Micro Operation
| Project/Area Number |
13450102
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Intelligent mechanics/Mechanical systems
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| Research Institution | Nagoya Institute of Technology |
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Principal Investigator |
SANO Akihito Nagoya Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (80196295)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAKAWA Satoko Nagoya Institute of Technology, Faculty of Engineering, Research Associate, 工学研究科, 助手 (20293748)
FUJIMOTO Hideo Nagoya Institute of Technology, Faculty of Engineering, Professor, 工学研究科, 教授 (60024345)
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| Project Period (FY) |
2001 – 2002
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| Keywords | Micro Operation / Scaling / Master Slave System / Differential Limen / Stability and Tracking / Impedance / Suturing / Medical Engineering |
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| Research Abstract |
Master-slave equipment presents a force in master side by scaling up or down the force observed in slave side. For the efficiency improvement of micro operations, etc., it is desirable that the displayed force is adjusted to the human ability to perceive. In this study, we dealt with the scaling method considering the differential limen of the force, which is one of the inner force sense characteristics. By noticing the differential limen, the conditions for making it possible to perceive not only an existence but also a change of force are obtained. Under the condition that the differential limen is in proportion to standard stimulus, the condition for the perception of a change of force in master side was showed. Simultaneously, lower limit of the scaling modulus for the perception was obtained. We applied the conditions to the measured results and discussed the modification of the scaling coefficient when the dispersion exists in the measured values.
In micro-teleoperation, such as m
… More
icro tele-surgery, the human operator must be able to identify the micro-environment and execute well the micro-teleoperation. A scaling problem is one of the most important problems. In general, an objective of scaling problem is to magnify the scale of micro environment with minimal loss of physical information. However, in this study, a human-centered sealing was suggested. The design of the variable controller by which the operator is able to choose on-line the appropriate scaling parameters could be realized in the framework of the H_∞ gain scheduling. The human operator could choose the optimum scaling parameters in consideration of his ability of perception and motor control. The task in which haptic sense becomes a key factor was produced in order to demonstrate the significance of direct force-reflection from the micro environment. The human characteristics of perception and hand impedance within the range of scaling were investigated. We emphasized that the individual variation should be thought highly from the human-centered point of view.
To realize the advanced surgery simulator, modeling of geometrical / physical characteristics of soft deformable objects and topological transformation such as cutting and needle insertion were investigated as one of the killer application of micro operation. Less
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