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Proceedings Paper

Systemwide joint position sensor fault tolerance in robot systems using Cartesian accelerometers
Author(s): Hal A. Aldridge; Jer-Nan Juang
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Paper Abstract

Joint position sensors are necessary for most robot control systems. A single position sensor failure in a normal robot system can greatly degrade performance. This paper presents a method to obtain position information from Cartesian accelerometers without integration. Depending on the number and location of the accelerometers, the proposed system can tolerate the loss of multiple position sensors. A solution technique suitable for real-time implementation is presented. Simulations were conducted using 5 triaxial accelerometers to recover from the loss of up to 4 joint position sensors on a 7 degree of freedom robot moving in general three dimensional space. The simulations show good estimation performance using non-ideal accelerometer measurements.

Paper Details

Date Published: 30 October 1996
PDF: 9 pages
Proc. SPIE 2905, Sensor Fusion and Distributed Robotic Agents, (30 October 1996); doi: 10.1117/12.256320
Show Author Affiliations
Hal A. Aldridge, NASA Langley Research Ctr. (United States)
Jer-Nan Juang, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 2905:
Sensor Fusion and Distributed Robotic Agents
Paul S. Schenker; Gerard T. McKee, Editor(s)

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