Presentation
24 March 2021 Optoelectronic sensing of the deformation of soft robots, and their electrohydraulic power
Robert F. Shepherd
Author Affiliations +
Abstract
An engineering contradiction exists between enduring and adaptable robots—we have examples of autonomous cars that can drive for 100’s of miles, or legged ones that can do backflips for a little while, but never the twain shall meet. Pushing this Pareto frontier outwards towards biological capabilities of enduring and adaptive mobility will probably require embracing complexity and multifunctionality. Meaning, hierarchical assembly of several sub-systems (i.e., organs) and packing energy into every cubic centimeter of volume. Towards this end, I will talk about our work to “innervate” robots for tactile feedback using stretchable sensing “skins” for high density shape sensing measurements to improve control authority in high degree of freedom (passive or active) continuum structures and actuators. My focus will be on the use of stretchable fiberoptic lightguides as a sensing medium for estimating deformation and temperature in the “meat” of these compliant structures and actuators. After discussing sensing, I will then describe our concept of “Robot Blood” in order to increase the overall energy density of hydraulically powered robots. This Robot Blood is an electrolyte based off of redox flow battery (RFB) chemistry that performs the additional function of force transmission and soft actuator inflation. I will close by demonstrating robots that take advantage of this electrohydraulic power
Conference Presentation
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert F. Shepherd "Optoelectronic sensing of the deformation of soft robots, and their electrohydraulic power", Proc. SPIE 11587, Electroactive Polymer Actuators and Devices (EAPAD) XXIII, 1158703 (24 March 2021); https://doi.org/10.1117/12.2586857
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