Evaluation of artificial muscle using SMA spring bundle with high\load capacity and power density

Abstract

Recently, studies on artificial muscles that are linearly driven like human muscles and move smoothly and flexibly have been attracting attention. In this study, AMSSB (artificial muscle based on SMA spring bundle) driven by hot water and cool water is presented and its performance evaluation results are presented. It showed applicable performance to a robot by showing a power density of 1 kW/kg and a large displacement of 70 mm for a driving frequency of 1 Hz and a high load mass of 2.3 kg.