Mathematics – Logic
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3523..150h&link_type=abstract
Proc. SPIE Vol. 3523, p. 150-156, Sensor Fusion and Decentralized Control in Robotic Systems, Paul S. Schenker; Gerard T. McKee;
Mathematics
Logic
Scientific paper
The ability of a small rover to operate semi-autonomously in a hazardous planetary environment was recently demonstrated by the Sojourner mission to Mars in July of 1997. Sojourner stayed within a 50 meter radius of the Pathfinder lander. Current NASA plans call for extended year-long, multikilometer treks for the 2003 and 2005 missions. A greater deal of rover autonomy is required for such missions. We have recently developed a hybrid wavelet/neural network based system called BISMARC (Biologically Inspired System for Map-based Autonomous Rover Control), that is capable of such autonomy. Simulations reported at this meeting last year demonstrated that the system is capable of control for multiple rovers involved in a multiple cache recovery scenario. This robust behavior was obtained through the use of a free-flow hierarchy as an action selection mechanism. This paper extends BISMARC to include fault tolerance in the sensing and mechanical rover subsystems. The results of simulation studies in a Mars environment are also reported.
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