JRM Vol.34 No.2 pp. 212-218
doi: 10.20965/jrm.2022.p0212


Ostrich-Inspired Soft Robotics: A Flexible Bipedal Manipulator for Aggressive Physical Interaction

Hiromi Mochiyama*, Megu Gunji**, and Ryuma Niiyama***

*University of Tsukuba
1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan

**Toyo University
1-1-1 Izumino, Itakura-machi, Ora-gun, Gunma 374-0113, Japan

***The University of Tokyo
7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan

November 1, 2021
November 15, 2021
April 20, 2022
soft robotics, ostrich, underactuated mechanism, continuum manipulator, hyper-many-DOF manipulator

In this letter, ostrich-inspired soft robotics, an approach to intelligent robots that can achieve dexterous manipulation and locomotion without hesitating to collide with the surrounding environment, is proposed. The rationale behind the approach is described from the history of bio-inspired mechanisms, biology, and the theory of robot control. This letter focuses on the manipulator. The first prototype of an ostrich-inspired manipulator was developed to investigate its feasibility. This prototype is a serial chain of 18 rigid links connected with rotation joints moving in a vertical plane and driven through two asymmetric antagonistic wire systems connected to two levers that are directly operated by a human operator playing the role of the controller. Therefore, this manipulator is a highly underactuated mechanism that is flexible against external forces. The experimental results show that a human operator can control this manipulator so that its tip (i.e., the head) can reach several positions, including an upper position against gravity, indicating the potential of ostrich-inspired manipulators.

Robostrich, a prototype of an ostrich-inspired manipulator

Robostrich, a prototype of an ostrich-inspired manipulator

Cite this article as:
H. Mochiyama, M. Gunji, and A. Niiyama, “Ostrich-Inspired Soft Robotics: A Flexible Bipedal Manipulator for Aggressive Physical Interaction,” J. Robot. Mechatron., Vol.34 No.2, pp. 212-218, 2022.
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