News

April 16, 2018

Best paper candidate at EuroSimE 2018

Comparison of temperature differences across thermoelectric generator as obtained from the full and reduced models

 

Paper 'Parametric Model Order Reduction of a Thermoelectric Generator for Electrically Active Implants' was presented at 19th EuroSimE in Toulouse and selected as one of the best paper candidates.

In this paper, we analyze a thermal model of human tissue with an implanted generator. The impact of convection at the skin surface is studied by applying parametric model order reduction with film coefficient and ambient temperature as parameters. We propose to use our approach for efficient parameter studies and the co-simulation of generator and electric circuitry.

 

Paper Link: Full paper in pdf

March 01, 2018

Journal paper accepted by Journal 'Microelectronics Reliability'!

Flexibles vibration energy harvesting device

 

Paper 'Stable Reduced Order Modeling of Piezoelectric Energy Harvesting Modules Using Implicit Schur Complement' is accepted by Journal 'Microelectronics Reliablity'. This project is cooperated with the research group with topic 'Flexibles Vibration Energy Harvesting' in University Rostock.

In this work, we present an improved technique for reduced order modeling of a micromachined piezoelectric energy harvester and a novel frequency tunable piezoelectric energy harvester with segmented electrodes for improved power generation. A computationally efficient implicit Schur complement is developed for better conditioning of the numerical models. In combination with Krylov subspace based model order reduction methods, it offers an effi cient way to generate guaranteed stable reduced order models of multi-physical device models. We demonstrate an excellent match between the full-scale and the reduced order models of the harvester devices and establish a methodology for the truly system-level simulation based on this reduced order numerical models.

 

Paper Link: https://www.sciencedirect.com/science/article/pii/S0026271418301458

February 21, 2018

Student contribution presented at MATHMOD 2018

System-level representation of piezoelectric energy harvester model

 

Student contribution 'Implicit Schur Complement for Model Order Reduction of Second Order Piezoelectric Energy Harvester Model' was presented at 9th Vienna International Conference on Mathematical Modeling.

In this work, we consider an alternative approach, implicit Schur complement transformation, for efficient one-sided reduction of the second order piezoelectric energy harvester model.

 

Paper Link: Full paper in pdf

February 2, 2018

EU-MORNET Workshop: MOR 4 MECHATRONICS

University President Prof. Dr. Manfred Weisensee, organizer Prof. Dr. Tamara Bechtold and invited speaker Prof. Dr. Wil Schilders

 

On 2nd Feburary, EU-MORNET WORKSHOP: MOR 4 MECHATRONICS was successfully held in Jade University of Applied Science in Wilhelmshaven. We aim to bring together the European theorist and practitioners working in the area of Model Order Reduction (MOR) for the system level simulation of mechatronic system. 

During the one day workshop, the invited speakers shared their recent reseach results in the field of MOR and the applications of MOR theory in real-world mechatronics industry. A brain storm about the future of the mechatronics was given.

 

Website Link: MOR4MECHATRONICS

News Link: Jade Hochschule-100 fache Beschleunigung der Rechnerleistung

October 23, 2017

Paper presented at MikroSystemTechnik Congress 2017

Schematics of a thermo-electrically driven implant for application below the skin

 

Paper 'Design of a thermoelectric generator for electrical active implants' was presented at MikroSystemTechnik 2017 in Munich. This project is a part of the project Collaborative Research Centre 1270 - 'ELAINE', which focuses on providing highly integrated electronic system for novel and electrically stimulating implants. 

In this work, we mainly present a multiphysical model of a miniaturized thermoelectric generator for electrically active implants, which uses temperature gradients in human tissue. Based on this model, we analyze the influence of the geometry and material parameters on the thermal and electrical properties and aim for an optimal transducer design. Furthermore, we use mathematical methods of model order reduction to create an accurate compact model that can be applied within a system simulation.

 

Paper Link: https://ieeexplore.ieee.org/document/8278689/

October 01, 2017

New research member! M.Sc. Hu was granted the scholarship of Jade2Pro2.0

 

Since October 2017, M.Sc Hu Siyang has been granted a scholarship by the Jade PhD program (Jade2Pro) for a research project involving the Jade University of Applied Sciences and the University of Rostock to pursue a PhD with the title:

'Design Optimization of Multimodel Microsystems using Topology Optimization and Model Order Reduction'

July 04, 2017

Paper presented at AIM 2017 International Conference

Thermo-mechanical system of machine tool using MOR workflow

 

Our paper 'Model Order Reduction and System Simulation of a Machine Tool for Real-Time Compensation of Thermally Induced Deformations' was presented at IEEE International Conference on Advanced Intelligent Mechatronics 2017 in Munich.

This work presents the application of mathematical methods of model order reduction for automatic generation of highly accurate and compact models of strongly coupled thermo-mechanical machine tool model. In the further step, the reduced model is imported into the system-level simulation. Based on the accurate reduced order model, a cascade controller is implemented to monitor and compensate the thermally induced deformations of a machine tool.

 

Paper Link: https://ieeexplore.ieee.org/document/8014161/

May 17, 2017

M.Sc. Yuan was granted the scholarship of Jade2Pro2.0

Chengdong Yuan and Prof. Dr. -Ing Tamara Bechtold are developing the miniaturized energy converters

 

M. Sc. Yuan Chengdong joined the research group of Prof. Dr. -Ing Tamara Bechtold and was supported by the Jade2Pro2.0 PhD program of Jade University of Applied Sciences since April in 2018. 

His research topic is 'Parametric Model Order Reduction of MEMS-based Energy Harvester Modules', which is focused on providing efficient simulation models for the design optimization of energy harvest modules. This research is also cooperated with Prof. Dr. -Ing Dennis Hohlfeld in University Rostock.

 

News Link: Nordwest Zeitung