Robotic Tactile Sensor Fabricated from Piezoelectric Polyvinylidene Fluoride Films
Abstract
The purpose of this research effort was to design, fabricate and test a robotic tactile sensor fabricated from polyvinylidend fluoride (PVDF) films coupled to a silicon substrate containing active amplification circuitry. The integrated circuit incorporated 25 sensor electrode pads (0.6mmx0.6mm each) arrayed in a 5x5 grid with a spacing of 0.6mm between electrodes (this corresponds to a spatial resolution four times greater than the human fingertip) . The on-board amplification circuitry consisted of a dual MOSFET amplifier (with a gain of 5) for each sensor electrode. Four different sensor configurations were fabricated and tested. The configurations varied only in the thickness of the PVDF film used (25 microns, 40 microns, 52 microns, and 110 microns). The individual elements of each of the sensor configurations were tested and the sensor based on the 25 micron thick film was considered the optimal sensor of the four.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1988
- Accession Number
- ADA202724
Entities
People
- Rocky R. Reston
Organizations
- Air Force Institute of Technology