Authors:
Kentaro Masuyama
1
;
Yoshiyuki Noda
2
;
Yasumi Ito
2
;
Yoshiyuki Kagiyama
2
and
Koichiro Ueki
3
Affiliations:
1
Integrated Graduate School of Medicine, Engineering and Agricultural Sciences, University of Yamanashi, Kofu, Yamanashi and Japan
;
2
Faculty of Engineering Department, University of Yamanashi, Kofu, Yamanashi and Japan
;
3
Faculty of Medicine, University of Yamanashi, Chuo, Yamanashi and Japan
Keyword(s):
Surgical Training Simulator, Virtual Reality, Force Display Device, Chiseling, 2 DOF Admittance Control.
Related
Ontology
Subjects/Areas/Topics:
Evolutionary Computation and Control
;
Force and Tactile Sensors
;
Human-Machine Interfaces
;
Informatics in Control, Automation and Robotics
;
Intelligent Control Systems and Optimization
;
Robotics and Automation
;
Signal Processing, Sensors, Systems Modeling and Control
;
Virtual Environment, Virtual and Augmented Reality
Abstract:
This study contributes to developing the virtual surgical training simulator for chiseling operation. In surgical operations using the bone chisel, impact forces are applied to the bone by pounding the chisel with the mallet. To virtually represent this situation in the training simulator, the force display system with high stiffness and instant reaction to the impact force is needed. In order to realize this force display system, we constructed the force display device with the ball-screw mechanism for obtaining the high stiffness, and proposed the two degree-of-freedom (2 DOF) admittance control for reacting instantaneously in the previous study. In this study, the force display control system using 2 DOF admittance control is analyzed, and the feedforward and feedback controllers in 2 DOF admittance control are developed for improving the reaction of the force display device. The efficacy of the proposed control system is verified by creating a virtual experience to the chiseling
manipulation of a hard object using the bone mallet. From the experimental results, it is confirmed that the movement, contact, chiseling and splitting sensations are displayed more accurately than the conventional approach.
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