I don't see a problem with using the standard PID loops. I did something similar to this with my lathe for turning some non circular parts. I couldn't use a very high spindle speed but I'm sure it was faster than you would need while grinding.
Les On 29/05/2013 12:13, Marshland Engineering wrote: > Has anyone made a 4 stroke CAM grinder using LINUXCNC. Apparently positioning > the head is not the way to go. From what I was told the head needs to be > positioned with acceleration rather than absolute position. It sound a bit > odd but apparently if you have done this before, you have an idea of what I'm > talking about. > > Thinking about it, the grinding head will have rapid amounts of accelleration > and decelleration during the CAM grinding cycle, so unless the PID loop is > very fast and accurate and enough power to overcome the large inertia, it > won't grind correctly. It could grind correctly and with lot less power if > the control system had next move predictive option > > Cheers Wallace > > ------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
