Ritsumeikan Summer 2005
 
Prototype Next Generation Robots Developed at RU
 
Aichi World Expo (Aug. 2005) Since the first worldfs fair held in London in 1851, international expositions have inspired forward-looking innovations and creative scientific advancements. At the 2005 World Expo in Aichi, Japan, Ritsumeikan University participated in this innovative tradition by demonstrating three next generation model robots at the expofs Robot Project: Prototype Robot Exhibition held from June 9th to19th. Co-sponsored by the Japan Association for the 2005 World Exposition and the New Energy and Industrial Technology Development Organization (NEDO), the special exhibition displayed sixty-five prototype robots developed by universities, corporations, and research institutions. The robots Ritsumeikan University presented were developed by professors in the College of Science and Engineering.

Man-Machine Synergy Effector

Man-Machine Synergy EffectorThe Man-Machine Synergy Effector (MMSE) is robot that combines the facility of human beings with the strength of machines. By using this robot, a person is able to effortlessly handle large objects that would normally be too heavy and cumbersome for one person to lift alone. The MMSE amplifies human strength and dexterity, giving anyone the power of a superhuman.

Developed by Lecturer Kanaoka Katsuya, the main feature of the MMSE is the Power Effector that implements the robotfs high power. Through ghold and useh technology, the personfs skills are combined with the robotfs power. Through this synergy, it is possible to accomplish tasks that could otherwise not be performed by either just a human or just a robot. Normally, it is dangerous for a person to directly hold a high power robot. But Lecturer Kanaoka and his team were able to remedy this problem by introducing the control technology Virtual Power Limiter System to stabilize amplification-controlled power. The Power Finger is a simpler version of the MMSE, with more practical uses. This robot maintains the facility of a humanfs fingers while exhibiting a powerful grip (max. 200 [kgf]) beyond human ability.

The MMSE robot is expected to greatly enhance overall operation efficiency in the construction, manufacturing, and wholesale industries. Additionally, because the MMSE can be operated so intuitively, it may be useful as a counter-measure to the aging population problem, allowing aging employees to complete tasks without physical strain.

ƒÊ-TAN

myu-tanThe robotƒÊ-TAN has made significant progress in lessening the distance between humankind and the micro world (infinitesimal space). Using micro-machine or MEMS technology as its base, theƒÊ-TAN combines robotics and virtual reality to make encounters with the micro world possible. Developed by Professors Konishi Satoshi and Nokata Makoto, ƒÊ-TANfs tiny fingers are operated by the movements of a human hand and are able to grasp fine particles.

Using a virtual reality human interface as a control input device, the operator is able to control the movements of the micro fingers. Through this operation, it becomes possible to manipulate the micro world, which until now has been difficult for humankind to make contact with. The silicon rubber micro fingers have a width of 800ƒÊm and a thickness of approximately fiftyƒÊm. The joints, which are made of a silicon rubber film, expand and contract, and bend and extend by pneumatic force. The guide robot determines the high-precision positioning of the micro hand through the use of a micro paralleling mechanism driven by DC servo motors built into the base. The research team hopes that the robot will eventually be useful in the medical field, especially as an instrument for low-invasive surgical endoscopies and advanced embryo procedures.

KOHARO

KOHAROKOHARO is a soft robot that uses its malleable form to roll and jump across the earthfs surface. KOHARO, which can jump up to thirty centimeters and change its spherical shape and movements depending on the terrain, represents a new concept in irregular surface traveling robots.

The robot was developed by Professor Hirai Shinichi and College of Science and Engineering graduate student Sugiyama Yuta. Professor Hirai says, gKOHARO has a soft body. Soft actuators within the soft body transform the robotfs shape. By controlling the bodyfs transformation, the robot is able to crawl across the surface of the earth. The robot can also jump along the surface of the earth.h

Both KOHAROfs jumping-crawling model and crawling model were demonstrated at the 2005 World Expo. In each model, three round bodies are combined and the inside is composed of either twenty-two or eighteen shape memory alloy actuators. The jumping-crawling model has a small, light body, while the inside of the larger body of the crawling model is equipped with a computer that acts as a brain. The crawling model robot can accept signals from outside sensors and communicate with other robots while it is crawling along. This gsoft roboth has great potential for practical use due to the advancement of actuators and soft mechanics in recent years.



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