John Thornton wrote: > So you agree with Andys description? I have a hard time keeping them > straight... > > In a positioning application, like the X axis, then FF0 is an adjustment proportional to position. FF1 is proportional to velocity. FF2 is proportional to acceleration.
But, at the most basic, FF0 is proportional to whatever command is being fed to the input of the PID. FF1 is proportional to the derivative of the command, FF2 is proportional to the 2nd derivative of the command. So, it depends on the type of signal that the PID is being commanded with. Jon ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
