Automatica, August, 1996, Volume 32, No. 8

#### Editorial

Since 1981, the IFAC Publications Management Board awards
prizes of 1000 CHF each to a few selected papers. These prizes
are awarded at the IFAC Congresses and cover the triennium before
the congress. Traditionally three papers are selected each time;
one theory/methodology oriented, one applications oriented and
one survey paper.

For the triennium 1993-1995, the IFAC Council appointed a
committee consisting of Lennart Ljung (chairperson), David Clarke
and Michael Masten to select the winning papers. We have worked
closely together with the IFAC editors, and are happy to announce
that three excellent papers have been chosen. The prizes were
awarded at the closing ceremony of the 13th IFAC Congress in San
Francisco.

The papers with their citations are:

**A.J. Sorensen and O. Egeland,** Design of ride control
system for surface effect ships using dissipative control. *Automatica*
**31**, 2, pp. 183-200 (February, 1995).

"With an excellent blend of theory and practice,
innovative methods are developed for an important application.
The paper covers the whole range of in-depth analysis, design and
full scale implementation, and is thus a model for control
research."

**P. van Overschee and B. De Moor**, N4SID: Subspace
algorithms for the identification of combined
deterministic-stochastic systems. *Automatica* **30**, 1,
pp. 75-94 (January, 1994).

"With deep insight, this paper develops a most useful and
efficient method for multivariable system identification. The
presentation covers numerical, statistical and implementation
issues, and has had an immediate impact on best practice in
identification applications."

**R. David and H. Alla**, Petri nets for modeling of
dynamic systems - A survey. *Automatica* **30**, 2, pp.
175-202 (February, 1994).

"This is a most useful survey that in a very pedagogical
way gives valuable insight into the basic features of Petri nets,
and also puts discrete systems clearly on the control theory
map."

Lennart Ljung

Chairman, Automatica Prize Paper Awards Committee 1996

Last modified on June 22, 1996