Spray Coated Piezoresistive Bend Sensor for Controlled Movements in Soft Robots

Conference paper

Oliver Ozioko and Ravinder Dahiya 2022. Spray Coated Piezoresistive Bend Sensor for Controlled Movements in Soft Robots. 2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS). IEEE. https://doi.org/10.1109/fleps53764.2022.9781547
AuthorsOliver Ozioko and Ravinder Dahiya
TypeConference paper
Abstract

This work presents a flexible piezoresistive sensor for measuring the bending angles to facilitate controlled movements in soft robots. The sensors was realized using a piezoresistive sensing material prepared by mixing graphite in a polyvinylidene fluoride (PVDF) solution. The resultant graphite solution was spray-coated on a ~80µ-thick polyvinylchloride (PVC) substrate to realize a 5 x 5cm- wide piezoresistive film. Three similar sensors (~3mm x 30mm in dimension) were realized and their performance compared. The results obtained show a change in resistance ΔR/R O ~80% for a bending angle of 50 o and a sensitivity of ~ ΔR/Ro = 1.5% per degree bending. The sensor makes it possible to measure in real-time the bending of soft and flexible robot as it can uniquely detect the bending conditions. Hence, the sensing information from the sensor could be used for a close loop control of their locomotion or reconstruction of their shapes.

Keywordsflexible piezoresistive sensor; bend sensor; shape reconstruction; soft robots; piezoresistive sensors ; spray coating
Year2022
Conference2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)
PublisherIEEE
Digital Object Identifier (DOI)https://doi.org/10.1109/fleps53764.2022.9781547
Web address (URL)https://ieeexplore.ieee.org/document/9781547
Output statusPublished
Publication dates10 Jun 2022
Publication process dates
Deposited20 Jun 2024
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