Ferropiezoelectric array as a primary sensor for processing of tactile information

Abstract

This work has investigated and developed tactile ferropiezoelectric array sensors. The nonresonance piezoelectric transformers (NRPT) with a sectional generator electrode are basic functional elements of these arrays. The running bulk acoustical wave (RBAW) has scanned the tactile effect on the array field. Electromechanical processes in the NRPT with RBAW have been studied by the methods of mathematical modelling and simulation. Design methods for this type of tactile arrays have also been suggested. These are outlined on the basis of the criteria for estimation of the arrays on the functional, constructive and organisation levels of the sensors taking into account their particular applications. The correct choice of the array design parameters enables to develop various constructions of the ferropiezoelectric tactile matrix sensors with different organisation depending on the specific input-output interface circuits of the system for processing of tactile information.