HEIDENHAIN TNC 306 Technical Manual User Manual
Page 138
4-38
TNC 406/TNC 306
3 Serv
o pos
itioning of the NC-a
x
e
s
3
/97
Actual
rpm
Actual
position
Motor
Tacho
Nominal
current
Nominal
position
Trailing
error
(lag)
Nominal
rpm
Actual
current
Actual position
Actual
rpm
CNC Control
Servo amplifier
Machine
Block diagram of the position control loop, here cascade control.
Position
regulator
rpm
regulator
Current
regulator
Linear/
Rotary
encoder
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