Feedforward Neural Network for Force Coding of an MRI-Compatible Tactile Sensor Array Based on Fiber Bragg Grating

Figure 2

(a) Experimental setup including FBG-based array, material testing machine, optical spectrum analyzer, and PC to collect data. (b) Close-up view of the FBG sensor array, the two translational stages, and the cylindrical indenter. (c) Schematic of FBG sensor array with detail of indenter positions, in correspondence with the center of FBGs (black circles) and at different distances from the central one (gray circles).

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