Controlling arc distance has been used as an example of one of the hardest things to put in a control loop. The interaction is non linear and chaotic. For cutting most sheet material, I would set it up to start at some sane distance and have a long, filtering time constant in the loop with some dead-band hysterisis - might want to throw away out of range samples.
Trying to do a lot of fancy math to linearize the loop will lead to frustration. -------------------------------------------------------------------------------- Karl Schmidt EMail k...@xtronics.com Transtronics, Inc. WEB http://secure.transtronics.com 3209 West 9th Street Ph (785) 841-3089 Lawrence, KS 66049 FAX (785) 841-0434 True wisdom is knowing what we don't know; There are many things that we can be certain of if we are willing to think, but true maturity is being comfortable with the idea that there are unknowable things. -KPS -------------------------------------------------------------------------------- ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
