G2: Velocities, setpoint / actual value systems, closed-loop control
7.5 Closed-loop control
Basic Functions
374
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
7.5
Closed-loop control
7.5.1
General
Position control of an axis/spindle
The closed-loop control of an axis consists of the current and speed control loop of the drive plus a higher-level
position control loop in the NC.
The basic structure of an axis/spindle position control is illustrated below:
Figure 7-10 Principle representation of the setpoint processing and closed-loop control
For a description of the feedforward control, backlash, friction compensation with further machine data, and
leadscrew error compensation, see:
References:
/FB2/ Function Manual Extended Functions; Compensations (K3)
For a description of jerk limitation, see:
References:
/FB1/ Function Manual, Basic Functions; Acceleration (B2).
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