Shunsuke Komizunai
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By using a surgery simulator, young doctors can train in surgical techniques to get essential skills and knowledge of surgery. In addition, surgeons can make a surgical plan and verify it. We have developed a neurosurgery simulator that can simulate surgical procedures in craniotomy such as brain retraction to expose a deep brain lesion. The simulator used virtual reality technology such as immersive display and haptic device to give a sense of presence. In this study, we simulated brain retraction and brain tumor resection to confirm operation verification and realistic sensation of the simulator.
In this paper, I describe turning walk on loose soil of a humanoid robot. I propose landing position control to curb ZMP deviation on loose soil. I inspected effectiveness which is use a miniature humanoid robot.
In the design and development of UAV (unmanned aerial vehicle), application of a variable pitch propeller which can freely change the propeller angle is expected. In this presentation, we report the frequency response of thrust change with propeller pitch angle input.
We developed and evaluated aerial force sense presentation device which can independently provide a sensation of translation and rotation. The user holds the device by his or her hand and perceives a sensation of translation and / or rotation. By generating a sensation of translation using a vibration speaker and use two vibration speakers, the device provide a sensation of rotation. By deflecting each sensation of vibration speaker mechanistically, this device can provide sensations with multiple degrees of freedom with small number of vibration speaker. We evaluated the device by tests that user answered a direction of sensation which provided randomly.
Humanoid robots have been expected to perform cooperation work and severe labor instead of humans. In case of engineering works or the disaster relief, it is assumed that conditions of ground surface are uneven and soft ground as sand, snow and clay. Therefore, humanoid robots must have ability of walking on such conditions of ground surface. However, in the studies of biped walking, humanoid robots are put on a rigid and at flat floor have been premised. Therefore, the walking ability on loose soil is very important, and it will expand application field of humanoid robots. In this study, landing position control is proposed to realize the attitude stabilization on loose soil for humanoid robots. Landing position control is combined with previous attitude stabilization system. By performing the stepping experiments on loose soil, the effectiveness of landing position control is verified.
Using midair image display which makes high quality virtual experience. Mist screen is a one of the midair image display system. In recent years, multi viewpoint observation is being developed for use many projectors, but this system get complexly. In this study, a display system for interactive free viewpoint midair images is developed. The system realized free viewpoint observation for use mist screen and move projector in front of user.
There are some problems to downsize a mist screen formation device as a midair image display from the aspect of mist/air flow in the narrow internal structure and screen formation. This paper proposes new structure to realize stable screen formation and higher visibility of midair images. Density of mist for the screen and air-curtain effect are improved.