DefinePK

Abstract

This study has investigated and surveyed tactile pressure sensors, such as strain gauge, piezocapacitive, piezoelectric, piezoresistive, and pressure conductive rubber, according to robotic applications of these sensors. These tactile pressure sensors have been broadly used for robotic grasping operations. Moreover, through these tactile pressure sensors, the information on physical contacts and the external environment of robotic hand are reported and discovered. In this study, common piezoresistive pressure sensors (force-sensing resistor) have achieved favorable results in gripping an object; these results support that the piezoresistive technique is an appropriate approach for robotic implementations. Furthermore, two illustrative empirical findings have been performed using both rigid and pliable robotic claw surfaces. Experimental results have shown the correlation between input force and output voltage as well as the response of pressure sensor with different robotic claw resiliencies.