Welcome

My name is Stephan Trenn and I am researcher in the area of applied mathematics, for more informations see the About Me page. You may also want to browse my publications, which can be filtered e.g. by keywords and coauthors. I also have profiles at Google ScholarResearchGate and ORCID.

Below, I will regularly post  news related to my research.

Finally, my Erdös number (see also here) is 4.
(Eugene P. Ryan – Geoffrey R. Burton – George B. Purdy – Paul Erdös)

Smooth approximation of switched DAEs paper accepted

Our paper 

Mostacciuolo, Elisa; Trenn, Stephan; Vasca, Francesco

A smooth model for periodically switched descriptor systems Journal Article

In: Automatica, 2021, (to appear).

Abstract | Links | BibTeX

was accepted as brief paper in Automatica.

Counterexample accepted for publication

The details of the counterexample I used in my PhD-thesis to proof that a distributional restriction is not possible in general is now accepted for publication as a paper in the journal Examples and Counterexamples. The reviewing process took quite some time, but in the end it was accepted without any changes.

Trenn, Stephan

Distributional restriction impossible to define Journal Article

In: Examples and Counterexamples, 2021, (to appear).

Abstract | Links | BibTeX

Two papers accepted for CDC 2021

The following two papers have been accepted for (online) presentation at the 60th IEEE CDC:

Wijnbergen, Paul; Trenn, Stephan

Optimal control of DAEs with unconstrained terminal costs Inproceedings

In: Proc. 60th IEEE Conf. Decision and Control (CDC 2021), 2021, (to appear).

Abstract | Links | BibTeX

Sutrisno,; Trenn, Stephan

Observability and Determinability Characterizations for Linear Switched Systems in Discrete Time Inproceedings

In: Proc. 60th IEEE Conf. Decision and Control (CDC 2021), 2021, (to appear).

Abstract | Links | BibTeX

Quasi-feedback forms paper accepted

Our manuscript

Berger, Thomas; Ilchmann, Achim; Trenn, Stephan

Quasi feedback forms for differential-algebraic systems Journal Article

In: IMA Journal of Mathematical Control and Information, (dnab030), pp. 1-31, 2021, (to appear).

Abstract | Links | BibTeX

was accepted for publication and will appear in a special issue dedicated to the work of Nicos Karcanias who shared our interest in descriptor systems and normal forms.

Final version of conference papers submitted

In the last few days we have prepared the final version of some accepted conference papers, I have therefore updated the preprints of the following papers:

Sutrisno,; Trenn, Stephan

Observability of Switched Linear Singular System in Discrete Time: Single Switch Case Inproceedings

In: Proc. European Control Conference (ECC21), Rotterdam, Netherlands, 2021, (to appear).

Abstract | Links | BibTeX

Hossain, Sumon; Trenn, Stephan

Minimal realization for linear switched systems with a single switch Inproceedings

In: Proc. European Control Conference (ECC21), Rotterdam, Netherlands, 2021, (to appear).

Abstract | Links | BibTeX

Chen, Yahao; Trenn, Stephan

On geometric and differentiation index of nonlinear differential-algebraic equations Inproceedings

In: Proceedings of the MTNS 2020/21, 2021, (to appear).

Abstract | Links | BibTeX

Chen, Yahao; Trenn, Stephan

An approximation for nonlinear differential-algebraic equations via singular perturbation theory Inproceedings

In: Proceedings of 7th IFAC Conference on Analysis and Design of Hybrid Systems (ADHS21), IFAC Brussels, Belgium, 2021, (to appear).

Abstract | Links | BibTeX

 

SCL article and PAMM papers available as open access

Our accepted journal paper

Wijnbergen, Paul; Trenn, Stephan

Impulse-free interval-stabilization of switched differential algebraic equations Journal Article

In: Systems & Control Letters, 149 , pp. 104870.1-10, 2021, (Open Access.).

Abstract | Links | BibTeX

 and the conference contributions

Trenn, Stephan; Unger, Benjamin

Unimodular transformations for DAE initial trajectory problems Inproceedings

In: PAMM · Proc. Appl. Math. Mech., pp. e202000322, Wiley-VCH GmbH, 2021, (Open Access.).

Abstract | Links | BibTeX

Chen, Yahao; Trenn, Stephan

The differentiation index of nonlinear differential-algebraic equations versus the relative degree of nonlinear control systems Inproceedings

In: PAMM · Proc. Appl. Math. Mech. 2020, pp. e202000162, Wiley-VCH GmbH, 2021, (Open Access.).

Abstract | Links | BibTeX

are now available online as open access.

MCSS paper available as open access

Our paper

Borsche, Raul; Kocoglu, Damla; Trenn, Stephan

A distributional solution framework for linear hyperbolic PDEs coupled to switched DAEs Journal Article

In: Mathematics of Control, Signals, and Systems (MCSS), 32 , pp. 455-487, 2020, (Open Access).

Abstract | Links | BibTeX

has now appeared and is available as open access.

Automatica and IEEE TAC papers accepted

Our following papers were accepted for publication in Automatica and IEEE Transactions on Automatic Control, I have updated the preprint and will add bibliographical data as soon as possible.

Iervolino, Raffaele; Trenn, Stephan; Vasca, Francesco

Asymptotic stability of piecewise affine systems with Filippov solutions via discontinuous piecewise Lyapunov functions Journal Article

In: IEEE Transactions on Automatic Control, 66 (4), pp. 1513-1528, 2021.

Abstract | Links | BibTeX

Anh, Pham Ky; Linh, Pham Thi; Thuan, Do Duc; Trenn, Stephan

Stability analysis for switched discrete-time linear singular systems Journal Article

In: Automatica, 119 (109100), 2020.

Abstract | Links | BibTeX

[Update] For the Automatica paper there is a 50-day free download available.

Final versions of ECC and IFAC papers

All our submissions to ECC’20 and IFAC World Congress 2020 were accepted for publication. I have updated the preprints to the final version and as soon as the bibliographical data is available I will also update those.

Wijnbergen, Paul; Jeeninga, Mark; Trenn, Stephan

On stabilizability of switched differential algebraic equations Inproceedings

In: IFAC-PapersOnLine 53-2, pp. 4304-4309, 2020, (Proc. IFAC World Congress 2020, Berlin, Germany. Open access.).

Abstract | Links | BibTeX

Hossain, Sumon; Trenn, Stephan

A time-varying Gramian based model reduction approach for Linear Switched Systems Inproceedings

In: IFAC PapersOnline 53-2, pp. 5629-5634, 2020, (Proc. IFAC World Congress 2020, Berlin, Germany. Open access.).

Abstract | Links | BibTeX

Wijnbergen, Paul; Trenn, Stephan

Impulse controllability of switched differential-algebraic equations Inproceedings

In: Proc. European Control Conference (ECC 2020), pp. 1561-1566, Saint Petersburg, Russia, 2020.

Abstract | Links | BibTeX

Lee, Jin Gyu; Berger, Thomas; Trenn, Stephan; Shim, Hyungbo

Utility of edge-wise funnel coupling for asymptotically solving distributed consensus optimization Inproceedings

In: Proc. European Control Conference (ECC 2020), pp. 911-916, Saint Petersburg, Russia, 2020.

Abstract | Links | BibTeX