Surface texture measurement by combining signals from two sensing elements of a piezoelectric tactile sensor

Javad Dargahi; Shahram Payandeh

doi:10.1117/12.303672

20 March 1998 Surface texture measurement by combining signals from two sensing elements of a piezoelectric tactile sensor

Javad Dargahi, Shahram Payandeh

Author Affiliations +

Proceedings Volume 3376, Sensor Fusion: Architectures, Algorithms, and Applications II; (1998) https://doi.org/10.1117/12.303672
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

In this paper we report on the design and testing of a prototype surface texture tactile sensor. The sensor can measure both compliance and surface roughness. The design of the sensor is based on the psychophysiological perception of surface texture by the human hand. The sensor essentially consists of a rigid cylinder surrounded by a compliant cylinder. The deformation of the compliant object from rigid to compliant cylinder is used for measuring the compliance of the contact object and variation of the compliant cylinder over a surface profile with reference to the rigid cylinder is used to measurement surface roughness. Two 25 micrometers thick polyvinylidene films are used as a transducer in the tactile sensor system. The sensor in miniaturized form can be used in a laparoscopic grasper for minimally invasive surgery. The theoretical analysis is made and compared with experimental values. The advantages and limitations of the sensor are also discussed.

Citation Download Citation

Javad Dargahi and Shahram Payandeh "Surface texture measurement by combining signals from two sensing elements of a piezoelectric tactile sensor", Proc. SPIE 3376, Sensor Fusion: Architectures, Algorithms, and Applications II, (20 March 1998); https://doi.org/10.1117/12.303672

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