Experimental Characterization of a Flexible Thermal Slip Sensor

Sensors

Maria Teresa Francomano¹  Dino Accoto² 

[1] Laboratory of Biomedical Robotics and Biomicrosystems, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo 21, Roma 00128, Italy;

关键词: slip detection;    flexible sensors;    tactile sensors;   

DOI  :  10.3390/s121115267

来源: mdpi

【 摘 要 】

Tactile sensors are needed for effectively controlling the interaction between a robotic hand and the environment, e.g., during manipulation of objects, or for the tactile exploration of unstructured environments, especially when other sensing modalities, such as vision or audition, become ineffective. In the case of hand prostheses, mainly intended for dexterous manipulation of daily living objects, the possibility of quickly detecting slip occurrence, thus avoiding inadvertent falling of the objects, is prodromal to any manipulation task. In this paper we report on a slip sensor with no-moving parts, based on thermo-electrical phenomena, fabricated on a flexible substrate and suitable for integration on curved surfaces, such as robotic finger pads. Experiments performed using a custom made test bench, which is capable of generating controlled slip velocities, show that the sensor detects slip events in less than 50 ms. This response time is short enough for enabling future applications in the field of hand prosthetics.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.