> Greetings; > > Some things in the man 9 pid page are too well hidden in the > mathematical "jargon". > > So can we clarify a few things? > > like: > pid.N.command-deriv float in > The derivative of the desired (commanded) value for the > control loop. If no signal is connected then the derivative will be > estimated numerically. > > What for instance, would/should be connected here, and what would be the > desired result of such a connection? And in this context, what is a > derivative?
Derivative is how fast the signal change. It may be estimated numerically by using the difference between different values but resolution might be a problem but it might be it's available by measurement. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
