### About Me

Hans Zwart is Professor in Physical Systems and Control, and head of the Chair Hybrid Systems in the Department of Applied Mathematics at the University of Twente.

His research interests are in control and analysis of systems described by partial differential equation and/or time difference differential equations. The main focus is on the development and analysis of controllers for linear systems. Hereby using the mathematical techniques from functional analysis and Hamiltonian dynamics. Main area of applications is the controller design and analysis of flexible structures. On this topic he has a long lasting collaboration with research groups in BesanĂ§on, Lyon, Wuppertal, and Eindhoven. At Eindhoven University of Technology, department of Mechanical Engineering, he holds a one-day-per-week professorship. Prof. H. Zwart is the co-author of two standard text books in his field; An Introduction to Infinite-Dimensional Systems Theory, (with R. Curtain) and Linear Port-Hamiltonian Systems on Infinite-Dimensional Spaces (with B. Jacob).

### Expertise

### Organizations

### Publications

*Nuclear Fusion*,

*58*(10), [106042]. DOI: 10.1088/1741-4326/aadc17

*2018 Annual American Control Conference (ACC) 2018: Milwaukee, WI, USA, 27-29 June 2018*(Vol. 2018-June, pp. 6012-6017). [8431589] (Proceedings of the 2018 American Control Conference). Institute of Electrical and Electronics Engineers. DOI: 10.23919/ACC.2018.8431589

*Physics of plasmas*,

*25*(8), [082510]. DOI: 10.1063/1.5010325

*Nuclear Fusion*,

*58*(9), [096036]. DOI: 10.1088/1741-4326/aad13e

*2017 IEEE 56th Annual Conference on Decision and Control: CDC 2017*(pp. 658-663). Institute of Electrical and Electronics Engineers. DOI: 10.1109/CDC.2017.8263736

Since I like to construct counter examples. I list here some of the counter examples found.

- T+B is never invertible for suciently small B; pdf-file
- If A generates an exponentially stable contraction semigroup, and Q is dissipative, then A+Q need not to generate a exponentially stable semigroup; pdf-file
- A boundedly invertible and Q bounded, does not imply that AQ is densely defined; pdf-file

### UT Research Information System

### Google Scholar Link

### Affiliated Study Programmes

#### Bachelor

#### Master

### Courses

### Projects

### Current Projects

### Media

Based on the book ``An Introduction to Infinite-Dimensional Linear Systems Theory'' some lectures were recorded. They may be found here: Lecture Infinite Dimensional Systems

The order of the videos are:

- 1 05 Introduction and Semigroups
- 1 01 Inputs and Outputs
- 1 03 Transfer Functions
- 1 04 Stability and Stabilizability
- 1 02 Port-Hamiltonian Systems

### Contact Details

#### Visiting Address

University of Twente

Faculty of Electrical Engineering, Mathematics & Computer Science

Zilverling
(building no. 11), room 3062

Hallenweg 19

7522NH Enschede

The Netherlands

#### Mailing Address

University of Twente

Faculty of Electrical Engineering, Mathematics & Computer Science

Zilverling
3062

P.O. Box 217

7500 AE Enschede

The Netherlands