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To test the integrity of all major components -- motors, signal generation hardware, shaker table, camera and vision system, we devised a simple experiment illustrated below: The idea is for a single coin, initially placed at the center of the plate, to be steered along the branches of a plus sign (one roundtrip to the edge of the table and back) for each of the branches, in clockwise order. MPEG-4 videos (Windows Media Player required) can be viewed in two parts by clicking on the images below. Alternatively, snapshots of the video can be viewed as an animated GIF.
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© 2000 Dan S. Reznik, <dreznik@cs.berkeley.edu> |