JRM Vol.26 No.6 pp. 685-690
doi: 10.20965/jrm.2014.p0685


Understanding of Falling Cat Phenomenon and Realization by Robot

Takashi Kawamura

Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan

November 11, 2014
November 15, 2014
December 20, 2014
principle of cat-turn motion, self-righting of a cat, robotic cat, 3D posture conversion, rubber actuator

Cat-turn by cat and robotic cat
The movement of live cat righting itself in midair, is investigated analytically and experimentally. The objective of the author is to develop a robot that lands upright on its feet like a cat. Interestingly, explanations in physics and dynamics textbooks that dealing with feline the self-righting remain contradictory and ambiguous. This is analyzed based on the law of conservation of angular momentum using a cat model. A robotic cat was then developed to turn in mid air. The robot righted itself completely after performing a 180° turn in the air.
Cite this article as:
T. Kawamura, “Understanding of Falling Cat Phenomenon and Realization by Robot,” J. Robot. Mechatron., Vol.26 No.6, pp. 685-690, 2014.
Data files:
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