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Actuators 2014, 3(2), 124-141; doi:10.3390/act3020124

A Mechanical Musculo-Skeletal System for a Human-Shaped Robot Arm

Department of Mechanical Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan
Received: 20 December 2013 / Revised: 12 May 2014 / Accepted: 13 May 2014 / Published: 17 June 2014
(This article belongs to the Special Issue Soft Actuators)
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This paper presents a mechanical system with a similar configuration to a human musculo-skeletal system for use in anthropomorphic robots or as artificial limbs for disabled persons. First, a mechanical module called ANLES (Actuator with Non-Linear Elasticity System) is introduced. There are two types of ANLES: the linear-type ANLES and rotary-type ANLES. They can be used as a voluntary muscle in a wide-range of musculo-skeletal structures in which at least double actuators work in an antagonistic setup via some elastic elements. Next, an application of the two types of ANLES to a two-degree-of-freedom (DOF) manipulator that has a similar configuration to the human elbow joint is shown. The experimental results of the joint stiffness and joint angle control elucidate that the developed mechanism effectively regulates joint stiffness in the same way as a musculo-skeletal system. View Full-Text
Keywords: musculo-skeletal system; non-linear elasticity; antagonistic alignment; stiffness control musculo-skeletal system; non-linear elasticity; antagonistic alignment; stiffness control

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Koganezawa, K. A Mechanical Musculo-Skeletal System for a Human-Shaped Robot Arm. Actuators 2014, 3, 124-141.

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