Accession Number : ADA274038


Title :   Object Imaging Accomplished with an Integrated Circuit Robotic Tactile Sensor Incorporating a Piezoelectric Polyvinylidene Fluoride Thin Film


Descriptive Note : Master's thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH


Personal Author(s) : Emmert, John M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a274038.pdf


Report Date : Dec 1993


Pagination or Media Count : 258


Abstract : The purpose of this research effort was to investigate the performance of a piezoelectric tactile sensor design and appropriately refine it. The sensor was fabricated from an 8 x 8 electrode array MOS integrated circuit. Each taxel in the array was 400 microns x 400 microns. A 6 mm x 6 mm piece of piezoelectric polyvinylidene fluoride was adhered to the electrode array using a urethane dielectric adhesive to form the active sensing area of the sensor. An amplifier was investigated to enhance the range of the tactile sensor's output signal. The amplifier is a high input' impedance differential amplifier with a linear range from 1 to 17 V. The unique feature of the differential amplifier was that it used a power supply of only 12 V. The spatial resolution of the sensor is 0.7 mm. The lower force limit of the sensor is 1 g while the upper limit, limited by a previous amplifier design with a range from 2.5 to 7 V, is 130 g. The dynamic range of the sensor is 130:1. The sensor's force sensitivity is 7.35 g. The pyroelectric bandwidth of the sensor is 0.083 Hz, and the temperature sensitivity of the sensor is 0.39 degrees Celsius. Tactile sensor, Sensors, Piezoelectric, Pyroelectric, PVDF, Thin film.


Descriptors :   *ROBOTICS , *THIN FILMS , *PIEZOELECTRICITY , *FLUORIDES , *INTEGRATED CIRCUITS , *POLYVINYLIDENES , OUTPUT , DETECTORS , ARRAYS , METAL OXIDE SEMICONDUCTORS , IMAGES , URETHANES , TOUCH , DYNAMIC RANGE , AMPLIFIERS , ADHESIVES , PYROELECTRICITY , IMPEDANCE , BANDWIDTH , POWER SUPPLIES , ELECTRODES , SIGNALS , SENSITIVITY , THESES , DIELECTRICS , RESOLUTION , TEMPERATURE


Subject Categories : Polymer Chemistry
      Electrical and Electronic Equipment
      Cybernetics
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE