Description

Machine vibrations can often not be prevented during machining. The "Improved Position Control" function provides a flexible solution to counteract the problem of natural vibrations by adapting various parameters.

Vibrations are actively damped by extending the classic PPI cascade control to allow an additional feedback of filtered speed values. Up to 3 frequencies can be damped simultaneously.

Parameterisation is carried out using P-AXIS-00753 and 3 modes are available for each frequency:

• (NOT_ACTIVE = 0)
• DIRECT = 1
• INDIRECT =2
• SET_POINT = 3

The operating principle of modes 1 - 3 is described in the sections below.

Attention

The "Improved Position Control" function is an intervention in the control loop and is therefore critical for system stability.