very small (~ 9 mm) motor very accurately--about 1-2 arc seconds RMS--at about 200 RPM. Actually I can relax that requirement slightly, because I really only need to know what the shaft angle was at each of ~200k measurement points per rev, so maybe a combination of good stabilization and even better encoding would work. Being an optics/electronics/physics guy more than a mechanical guy, I'd like to ask you folks for advice. Where should I start? (My physics personality suggests jewel bearings and an eddy-current drive, but I try to keep him under control.) Thanks Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net Other posts:
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