Dynamic Scheduling for Obstacle Avoidance in Mobile Robots

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1853/6771

Title: Dynamic Scheduling for Obstacle Avoidance in Mobile Robots
Author: Balch, Tucker ; Forbes, Harold C. ; Schwan, Karsten
Abstract: In robotics applications the speed at which a task may be completed is often limited by computation rather than actuator or sensor throughput. This research concerns the efficient threads-based implementation of motor schema-based reactive navigation. One result of this implementation is the insight that best effort scheduling offers significant performance advantages on single- and multi-processor architectures over static priority or round-robin scheduling. However, robot safety requires guaranteed rather than best effort scheduling, and low latency is important, in addition, to allow the robot to respond quickly to the real world. This paper presents the design and initial implementation results of a distributed, real-time, multiprocessor, dynamic scheduler offering both good quality scheduling decisions as well as low scheduling latency for individual tasks. Lastly, based on our results, we present a design for schema-based robot control when higher-level planning tasks are integrated with lower level reactive navigation.
Type: Technical Report
URI: http://hdl.handle.net/1853/6771
Date: 1993
Relation: CC Technical Report; GIT-CC-93-39
Publisher: Georgia Institute of Technology
Subject: Actuators
Distributed, real-time, multiprocessor, dynamic schedulers
Guaranteed dynamic scheduling
Motor schema-based reactive navigation
Robot navigation
Robot safety
Sensor throughputs
Threaded reactive navigation

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