HEIDENHAIN MANUALPLUS 620 - Page 844

844 HEIDENHAIN Technical Manual MANUALplus 620
In most cases, machines are controlled with velocity feedforward, since it
makes it possible to machine exact contours even at high speeds.
You can influence feedback control with velocity feedforward with the k
v
factor:
 Enter a k
v
factor in MP_kvFactor.
Unlike operation with following error, you must enter the optimum k
v
factor
for each axis when operating with interpolated axes (see "Interrelation of kv
factor, feed rate, and following error" on page 842).
U [V]
t [ms]
Warning
If the k
v
factor that you select is too large, the system will oscillate around
the forward-fed nominal velocity value.