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2009/04/30 News on gHRP-4Ch developed by AIST

A new female-type humanoid robot (Cybernetic Human) gHRP-4Ch was released by Humanoid Research Group, Intelligent Systems Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) on March 16, 2009.

Kokoro won a contract for the production of head and hands and the design of external facing through the bidding of the development project.



*Released images by AIST
Given a nice opportunity of realizing our dream of integrating a biped walking robot with the authentic-looking appearance of our Actroid, our staff actively challenged new approaches that differ from those of the past.

Though we didnft use pneumatic drive which is one of the main characteristics of Actroid and used motors instead, we put our Actroid technology into the design and external facing of HRP-4C.


We prevented the appearance of the robotfs face from being too life-like. The reason for that is the difference of mechanism between Actroid and HRP-4C. Actroid cannot walk, but instead, it can achieve as more human-like movements as possible. We can incorporate numerous actuators in it and there is relatively much room in the mechanical layout. Its very realistic appearance proves its merits by the balance with such mechanical specification. On the other hand, as for HRP-4C, due to the space-saving in the mechanical layout, a high priority is put on walking and some other movements like up/down and back/forth of the shoulder joint are eliminated. We built the completed image of HRP-4C based on these specification characteristics.


The iris was designed like a shutter of a camera. (The photos were taken in the factory.)

As for the body design, we eliminated mechanical decoration as much as possible on the assumption that it gets clothed based on its use as a human simulator. We put the belt-like part around the waist to hide a mechanical part inside, creating an illusion of convergence of its waistline.

The external facing of the body was also done to fit almost to the limit of its mechanical size.
AIST: http://www.aist.go.jp/index_en.html
Intelligent Systems Research Institute: http://unit.aist.go.jp/is/index_e.html
Press Release: http://www.aist.go.jp/aist_j/press_release/pr2009/pr20090316/pr20090316.html (in Japanese)

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