> > Ooohh look! - somebody with experience who's actually been there and > done it too <G> Hahahaha > > I've give up arguing with pedantic theorists, they always know better, > I'll just get back to doing it too at about +/-0.001 ;)
Wow Steve... that's impressive. We thought about a way to get rid of that last flex and thought about some mechanism which measures the tension dynamically and tweaks an idler pulley accordingly. I rigged a basic setup up once and it worked well for slow changes. Fast changes caused interesting effects... the belt started to feed back with different frequencies depending on the position of the gantry and the rigid pid didn't like that at all. I would describe my results best as 'mechanical agony'. I removed the fit throwing mechanism and the system's happy again lol. I am sure it can be done but a fuzzy logic has to learn the behavior. Maybe a sophisticated Japanese rice cooker can be retrained HA. Till then we continue to earn money with our contraptions. And yes, once in a while one has to build IT to verify a result. The belt formula clearly states the stretch. And that's going to happen. But... what happens when you start from that stretch 8))). Happy belting! Rainer PhD in belt torture ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
