Hiroki Tomori

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The performance of a robot can be enhanced by increasing its output. However, increasing the output of rigid actuators such as motors and hydraulic actuators will likely increase the weight of the robot. Conversely, organisms such as human beings achieve high output within a short time by accumulating and releasing the elastic energy stored in their muscles(More)
Highly rigid actuators such as geared motors or hydraulic actuators are widely used in industrial robots. To obtain high-speed motion, it is necessary to increase the actuator output as the robot weight increases. In contrast, humans perform motions using instantaneous force, such as jumping or throwing, via variable stiffness characteristics. We have(More)
Highly rigid actuators such as a geared motor or hydraulic actuator are widely used in industrial robots. To obtain high-speed motion, it is necessary to increase the actuator output as the robot weight increases. In contrast, humans perform motions with instantaneous force-as in a jump or throw-via variable rheological characteristics. We developed a(More)
Bio-logging enables zoologists to reveal the many mysteries of free-range animals. It enables valuable scientific data to be gathered without disturbing their daily life, using a small data logger attached to their body. Several zoologists have applied the bio-logging approach to reveal the behavior of sperm whales by attaching data loggers onto their(More)
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