Optimizing The Speed Controller - Siemens SINAMICS Series Operating Instructions Manual

8.9.3

Optimizing the speed controller

Basic information
The objective of the closed-loop control is to compensate the system deviation as a result of
changes to the setpoint and disturbances.
The evaluation is performed in the time domain:
● The control loop fulfills the requirement for steady-state accuracy, if the system deviation
as a result of a setpoint step (reference input) converges towards zero. The rise time t
and settling time t
● The overshoot defines the damping. For a step change of the setpoint or disturbance
variable, the controlled variable must not excessively overshoot the steady-state final
value.
Figure 8-44
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
specify the speed.
aus
Setpoint step to evaluate a controller
Commissioning
8.9 Manual optimization
an
347