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Publication type: Article in Proceedings
Author: Holger Täubig, Berthold Bäuml, Udo Frese
Title: Real-time Continuous Collision Detection for Mobile Manipulators - A General Approach
Book / Collection title: Proceedings of the IEEE-RAS International Conference on Humanoid Robots (HUMANOIDS 2012), Osaka, Japan
Year published: 2012
Publisher: IEEE
Abstract: We present a general real-time continuous collision detection algorithm for arbitrary systems of moving bodies connected to each other in a kinematic tree of joints. Here “joint” as a general term refers to the measured relative motion between two bodies, which may be physically connected or not. We provide a basic set of joints covering revolute and prismatic joints, vehicle motion, and 3d positioning which is sufficient for many applications in particular those involved with mobile manipulators, e.g. industrial and humanoid robots, intelligent transportation systems, or equipment at construction sites. Each joint implementation either operates on a motion bound (an interval covering the braking distance) or an uncertainty bound (measurement error) and computes a volume that spatially bounds the effect of that motion or uncertainty. Aggregating all joints in a kinematic tree then yields a conservative continuous collision detection for the complex and uncertain motion of the whole system.

We further present an augmented reality visualization that overlays the collision volumes into the live image of a camera, which can be used to validate the collision model before bringing a system into service.
Internet: http://www.informatik.uni-bremen.de/agebv/downloads/videos/taeubig2012_humanoids_video_final_large.mp4
PDF Version: http://www.informatik.uni-bremen.de/agebv/downloads/published/Taubig2012_HUMANOIDS.pdf
Keywords: collision detection mobile manipulator swept volume distance computation
Status: Reviewed
Last updated: 04. 04. 2013

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