Development of a Spoke Type Torque Sensor Using Painting Carbon Nanotube Strain Sensors

作者：Kim Sung Yong; Park Se Hoon; Choi Baek Gyu; Kang In Hyuk^*; Park Sang Wook; Shin Jeong Woo; Kim Jin Ho; Baek Woon Kyung; Lim Kwon Taek; Kim Young Ju; Song Jae Bok; Kang Inpil^*

来源：Journal of Nanoscience and Nanotechnology, 2018, 18(3): 1782-1786.

DOI：10.1166/jnn.2018.14989

• Torque Sensor
• Carbon Nanotube
• Strain Sensor
• Piezoresistivity
• Smart Paint

This study reports a hub-spoke type joint torque sensor involving strain gauges made of multi-walled carbon nanotubes (MWCNT). We developed the novel joint torque sensor for robots by means of MWCNT/epoxy strain sensors (0.8 wt%, gauge factor 2) to overcome the limits of conventional foil strain gauges. Solution mixing process was hired to fabricate a liquid strain sensor that can easily be installed on any complicated surfaces. We painted the MWCNT/epoxy mixing liquid on the hub-spoke type joint torque sensor to form the piezoresistive strain gauges. The painted sensor converted its strain into torque by mean of the installed hub-spoke structure after signal processing. We acquired sufficient torque voltage responses from the painted MWCNT/epoxy strain sensor.

• 出版日期2018-3