Controller Optimization - Siemens SINAMICS Series Operating Instructions Manual

Hide thumbs Also See for SINAMICS Series:

Table of Contents

Commissioning

8.9 Manual optimization

Controller optimization

● Set the function generator to a triangular waveform with

Step height = 5%

Offset = 10%

Period = 1000 ms

Pulse width = 500 ms

● Supply point: p50625[C] (see function diagram 6810)

● Record signals r52174 (n-set) and r52167 (n-act)

If the step response of the speed controller is recorded after performing the optimization run

for the speed controller, then the significant increase of the setpoint step can be clearly seen

– which is characteristic for optimization according to the symmetrical optimum.

A controller adjusted according to the symmetrical optimum has a significant overshoot,

however, a favorable response to disturbances.

This optimization has especially established itself in drive technology as many systems

require a good disturbance variable compensation. This is the reason why the optimization

run for the speed controller sets the controller parameters according to the symmetrical

An improved response to setpoint changes with the response to disturbances remaining the

same can be achieved using the reference model. See Chapter "Function descriptions",

Section "Speed controller".

SINAMICS DCM DC Converter

Operating Instructions, 12/2018, A5E34763375A