H2-optimal Anti-Windup Performance in SISO Control Systems

Jonas Öhr , Mikael Sternad and Stefan Rönnbäck

4th SIAM Conference on Control and its Applications,
Jacksonville, Florida, May 7-9 1998.

Outline:

The aim of anti-windup compensation is to modify the dynamics of a control loop when control signals saturate, so that a good transient behaviour is attained after desaturation, while avoiding limit cycle oscillations and repeated saturations.

Abstract:

We modify the dynamics of a control loop when the control signal saturates, so that the system (and the plant output) recovers to linear performance in H2-optimal sense after desaturation. The design requires tuning of only one knob. Thereafter, we show that tuning towards optimal recovery after desaturation one will automatically tune towards an optimal desaturation time instant as well.

Related publications:

PhD Thesis by Jonas Öhr, 2003.

Conference paper on the corresponding multivariable design, ECC 1997

Design method as described in a report by Rönnbäck and Sternad 1993.

Source:

Poster in Pdf.