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Volume 22 Issue 3 - Publication Date: 1 March 2003
 
Non-Bio-Mimetic Walkers
 
Kan Yoneda and Yusuke Ota Tokyo Institute of Technology, Japan
 
To make a walking machine more active and practical, reducing its weight without reducing its working ability is the key issue of design. A robot with many actuators that produce a function of a real animal's joint-base kinematics tends to be too heavy for a light-step animal-like walking. In this paper we propose the concept of reducing the number of actuators, which is extremely effective for reducing the weight of a walker. Considering the essence of walking locomotion, absolutely indispensable functions are an arbitrary movement of a swinging leg and some translation of the center of gravity to maintain balance. Seven actuators for a biped, four for a quadruped, six for a hexapod are the minimum numbers for essential functions. A six-actuator hexapod is realized by trial manufacturing. Furthermore, as a practical solution, more reduction is available by restricting walking functions. A five-actuator biped and a three-actuator quadruped are introduced in the experiments.
 
Multimedia Key
= Video = Data = Code = Image
 
Extension
Type
Description
1
Example One: Walk of hexapod. (16.6 MB)
2
Example Two: Stair climbing of hexapod. (13.6 MB)
3
Example Three: Grinding of hexapod. (11.9 MB)
4
Example Four: Stair climbing of biped. (16.0 MB)
5
Example Five: Walk of quadruped. (5.1 MB)
6
Example Six: Wall climbing of quadruped. (12.1 MB)
7
Example Seven : Ceiling walk of quadruped. (12.5 MB)
 
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