Design, fabrication and control of a two-legged walking robot

Abstract

A 4-DOF (degrees of freedom) two-legged robot named NUSTBOT-I has been designed and built. The paper contains a description of the design and working of this robot, supported by mathematical analysis of its structure. The results obtained from this analysis have been applied for tracing the trajectory of the centre of gravity of the robot, as it walks. One of the main design objectives was the simplicity of its control algorithm. The robot shifts its centre of gravity by bending the upper part of its body sideways. It can perform basic walking and turning operations and is programmable for different applications even by users who do not have any technical knowledge about bipedal walking.