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The performance of a 1-D distributive tactile sensing system for detecting the position, weight, and width of a contacting load

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2 Author(s)
Xianghong Ma ; Dept. of Mech. & Ind. Eng., Illinois Univ., Urbana, IL, USA ; P. N. Brett

This paper describes the performance of a novel tactile sensing system able to determine a description of a load in contact with a surface. The approach uses sensing elements in order to aim for mechanical simplicity and to formulate the load description. It integrates a deflecting surface, sensing elements, and computer interpretation algorithm. The description of the contacting load is derived in terms of a continuous function outputting position, width and weight. To demonstrate the principles clearly, the experimental surface selected for this investigation is a one-dimensional (1-D) simply supported beam that uses eight proximity sensors to detect deflection in response to the applied load. Back propagation neural networks are used in a cascaded architecture to process the sensory data to automatically estimate load position and width both within an error of 4% and 8% of the full range, respectively. The total value of the load is determined to within an error of 4% of the true value

Published in:

IEEE Transactions on Instrumentation and Measurement  (Volume:51 ,  Issue: 2 )