Torsten Wik

Full Professor at Automatic Control

Torsten Wik is Full Professor in Automatic control and head of the research group Automatic Control. He focuses his research and teaching mainly on process control, involving methods and theoretical aspects as well as direct applications. Methods include optimal control, model reduction and systems with model uncertainties. The applications are in general energy saving, environmental and biological systems such as water treatment, recirculating aquaculture systems (RAS), and LED lighting in greenhouses. Increasingly, the applications have been focused on battery management systems.

Source: chalmers.se
Image of Torsten Wik

Showing 176 publications

2024

Nonlinear Model Inversion-Based Output Tracking Control for Battery Fast Charging

Yang Li, Torsten Wik, Yicun Huang et al
IEEE Transactions on Control Systems Technology. Vol. 32 (1), p. 225-240
Journal article
2024

Hypergraph-Based Unified Model Development for Active Battery Equalization Systems

Quan Ouyang, Nourallah Ghaeminezhad, Yang Li et al
Proceedings of the American Control Conference, p. 2218-2223
Paper in proceeding
2024

Control-Oriented 2D Thermal Modelling of Cylindrical Battery Cells for Optimal Tab and Surface Cooling

Godwin Peprah, Torsten Wik, Yicun Huang et al
Proceedings of the American Control Conference, p. 4651-4656
Paper in proceeding
2024

A Unified Model for Active Battery Equalization Systems

Quan Ouyang, Nourallah Ghaeminezhad, Yang Li et al
IEEE Transactions on Control Systems Technology. Vol. In Press
Journal article
2024

Model optimization of a high-power commercial PEMFC system via an improved grey wolf optimization method

Hongxu Zhou, Xiaohua Wu, Yang Li et al
Fuel. Vol. 357 (Part A)
Journal article
2024

State of health estimation for lithium-ion batteries under arbitrary usage using data-driven multi-model fusion

Yizhou Zhang, Torsten Wik, John Bergström et al
IEEE Transactions on Transportation Electrification. Vol. 10 (1), p. 1494-1507
Journal article
2024

Automatic Generation of Examinations in the Automatic Control Courses: Decision Support Matlab/LATEX Toolkit for Stepwise Constructive Alignment

Alexander Stotsky, Torsten Wik
IFAC-PapersOnLine. Vol. 58 (16), p. 47-52
Paper in proceeding
2024

Battery capacity knee-onset identification and early prediction using degradation curvature

Huang Zhang, Faisal Altaf, Torsten Wik
Journal of Power Sources. Vol. 608
Journal article
2024

Machine learning-based lifelong estimation of lithium plating potential: A path to health-aware fastest battery charging

Yizhou Zhang, Torsten Wik, John Bergström et al
Energy Storage Materials
Journal article
2024

Predicting Electric Vehicle Energy Consumption from Field Data Using Machine Learning

Qingbo Zhu, Yicun Huang, Chih Feng Lee et al
IEEE Transactions on Transportation Electrification. Vol. In Press
Journal article
2024

Safety margin for Li-plating-free fast-charging of Li-ion batteries considering parameter uncertainty

Yao Cai, Yang Li, Torsten Wik
2024 IEEE Conference on Control Technology and Applications, CCTA 2024, p. 722-728
Paper in proceeding
2024

Metagenomics reveal the potential for geosmin and 2-methylisoborneol production across multiple bacterial phyla in recirculating aquaculture systems

Dan Zheng, Britt-Marie Wilen, Ola Öberg et al
Environmental Microbiology. Vol. 26 (10)
Journal article
2024

Scenario-Aware Machine Learning Pipeline for Battery Lifetime Prediction

Huang Zhang, Faisal Altaf, Torsten Wik
2024 European Control Conference, ECC 2024, p. 212-217
Paper in proceeding
2024

MINN: Learning the dynamics of differential-algebraic equations and application to battery modeling

Yicun Huang, Changfu Zou, Yang Li et al
IEEE Transactions on Pattern Analysis and Machine Intelligence. Vol. 46 (12), p. 11331-11344
Journal article
2024

Synthetic dataset of LG M50 batteries with different degradation pathways

Huang Zhang, Faisal Altaf, Torsten Wik
Data in Brief. Vol. 57
Journal article
2023

Comparative Analysis of Battery Cycle Life Early Prediction Using Machine Learning Pipeline

Huang Zhang, Faisal Altaf, Torsten Wik et al
IFAC-PapersOnLine. Vol. 56 (2), p. 3757-3763
Paper in proceeding
2023

Early prediction of battery life by learning from both time-series and histogram data

Yizhou Zhang, Torsten Wik, Yicun Huang et al
IFAC Proceedings Volumes (IFAC-PapersOnline). Vol. 56 (2), p. 3770-3775
Paper in proceeding
2023

An Overview of Biogas Plants in Ethiopia and Sweden: What Ethiopia Can Learn from Sweden

Bethlehem Abera, Torsten Wik, Getachew Bekele et al
2023 IEEE PES/IAS PowerAfrica, PowerAfrica 2023
Paper in proceeding
2023

Analysis of Potential Lifetime Extension Through Dynamic Battery Reconfiguration

Albert Skegro, Changfu Zou, Torsten Wik
The 25th European Conference on Power Electronics and Applications, EPE 2023 ECCE Europe
Paper in proceeding
2023

Optimization-free fast charging for lithium-ion batteries using model inversion techniques

Yang Li, Torsten Wik, Yicun Huang et al
IFAC-PapersOnLine. Vol. 56 (2), p. 6636-6641
Paper in proceeding
2023

Interpretable Battery Cycle Life Range Prediction Using Early Cell Degradation Data

Huang Zhang, Yang Su, Faisal Altaf et al
IEEE Transactions on Transportation Electrification. Vol. 9 (2), p. 2669-2682
Journal article
2023

Practical battery state of health estimation using data-driven multi-model fusion

Yizhou Zhang, Torsten Wik, John Bergström et al
IFAC Proceedings Volumes (IFAC-PapersOnline). Vol. 56 (2), p. 3776-3781
Paper in proceeding
2022

Combining offline and online machine learning to estimate state of health of lithium-ion batteries

Chengqi She, Yang Li, Torsten Wik et al
2022 European Control Conference, ECC 2022, p. 608-613
Paper in proceeding
2022

State of Power Prediction for Battery Systems with Parallel-Connected Units

Weiji Han, Faisal Altaf, Changfu Zou et al
IEEE Transactions on Transportation Electrification. Vol. 8 (1), p. 925-935
Journal article
2022

Offline and Online Blended Machine Learning for Lithium-Ion Battery Health State Estimation

Chengqi She, Yang Li, Changfu Zou et al
IEEE Transactions on Transportation Electrification. Vol. 8 (2), p. 1604-1618
Journal article
2022

Analysis and Estimation of the Maximum Switch Current during Battery System Reconfiguration

Weiji Han, Anton Kersten, Changfu Zou et al
IEEE Transactions on Industrial Electronics. Vol. 69 (6), p. 5931-5941
Journal article
2022

Sensitivity Analysis of the Battery System State of Power

Weiji Han, Faisal Altaf, Changfu Zou et al
IEEE Transactions on Transportation Electrification. Vol. 8 (1), p. 976-989
Journal article
2022

Fast Charging Control of Lithium-Ion Batteries: Effects of Input, Model, and Parameter Uncertainties

Yao Cai, Changfu Zou, Yang Li et al
2022 European Control Conference, ECC 2022, p. 1647-1653
Paper in proceeding
2022

Stochastic optimal control over unreliable communication links

Fredrik Bengtsson, Torsten Wik
Automatica. Vol. 142
Journal article
2022

Control-Oriented Modeling of All-Solid-State Batteries Using Physics-Based Equivalent Circuits

Yang Li, Torsten Wik, Changjun Xie et al
IEEE Transactions on Transportation Electrification. Vol. 8 (2), p. 2080-2092
Journal article
2022

Resolving issues of scaling for gramian-based input–output pairing methods

Fredrik Bengtsson, Torsten Wik, Elin Svensson
International Journal of Control. Vol. 95 (3), p. 679-691
Journal article
2022

A PDE Model Simplification Framework for All-Solid-State Batteries

Yang Li, Torsten Wik, Yicun Huang et al
American Control Conference. Vol. 2022-June, p. 1775-1781
Paper in proceeding
2022

A machine learning-based framework for online prediction of battery ageing trajectory and lifetime using histogram data

Yizhou Zhang, Torsten Wik, John Bergström et al
Journal of Power Sources. Vol. 526
Journal article
2021

On the modeling of pulp properties in CTMP processes

Fredrik Bengtsson, Anders Karlström, Torsten Wik
Nordic Pulp and Paper Research Journal. Vol. 36 (2), p. 234-248
Journal article
2021

Predictive energy management of hybrid electric vehicles via multi-layer control

Maryam Razi, Nikolce Murgovski, Tomas McKelvey et al
IEEE Transactions on Vehicular Technology. Vol. 70 (7), p. 6485-6499
Journal article
2021

Finding feedforward configurations using gramian based interaction measures

Fredrik Bengtsson, Torsten Wik
Modeling, Identification and Control. Vol. 42 (1), p. 27-35
Journal article
2021

Design and comparative analyses of optimal feedback controllers for hybrid electric vehicles

Maryam Razi, Nikolce Murgovski, Tomas McKelvey et al
IEEE Transactions on Vehicular Technology. Vol. 70 (4), p. 2979-2993
Journal article
2021

Electrochemical Model-Based Fast Charging: Physical Constraint-Triggered PI Control

Yang Li, D. Mahinda Vilathgamuwa, Evelina Wikner et al
IEEE Transactions on Energy Conversion. Vol. 36 (4), p. 3208-3220
Journal article
2021

Stress Detection Using Proximal Sensing of Chlorophyll Fluorescence on the Canopy Level

Linnéa Ahlman, Daniel Bånkestad, Sammar Khalil et al
AgriEngineering. Vol. 3 (3), p. 648-668
Journal article
2020

Run-to-Run Control for Active Balancing of Lithium Iron Phosphate Battery Packs

Xiaopeng Tang, Changfu Zou, Torsten Wik et al
IEEE Transactions on Power Electronics. Vol. 35 (2), p. 1499-1512
Journal article
2020

A comparison of topologies in recirculating aquaculture systems using simulation and optimization

Simon Pedersen, Torsten Wik
Aquacultural Engineering. Vol. 89
Journal article
2020

Modeling of tensile index using uncertain data sets

Fredrik Bengtsson, Anders Karlström, Torsten Wik
Nordic Pulp and Paper Research Journal. Vol. 35 (2), p. 231-242
Journal article
2020

Next-Generation Battery Management Systems: Dynamic Reconfiguration

Weiji Han, Torsten Wik, Anton Kersten et al
IEEE Industrial Electronics Magazine. Vol. 14 (4), p. 20-31
Journal article
2019

Near-Fastest Battery Balancing by Cell/Module Reconfiguration

Weiji Han, Changfu Zou, Liang Zhang et al
IEEE Transactions on Smart Grid. Vol. 10 (6), p. 6954-6964
Journal article
2019

Convex Identification of Minimal Function Bases for Cylinder Pressure by Using Pressure Values as Basis Weights

Marcus Hedegärd, Torsten Wik, Krister Fredriksson et al
IEEE Transactions on Control Systems Technology. Vol. 27 (1), p. 346-354
Journal article
2019

Ideal benefits of exceeding fixed voltage limits on lithium-ion batteries with increasing cycle age

Lukas Wikander, Bjorn Fridholm, Sebastien Gros et al
Journal of Power Sources. Vol. 441
Journal article
2019

Kalman filter for adaptive learning of two-dimensional look-up tables applied to OCV-curves for aged battery cells

Anton Klintberg, Changfu Zou, B. Fridholm et al
Control Engineering Practice. Vol. 84, p. 230-237
Journal article
2019

Load-responsive model switching estimation for state of charge of lithium-ion batteries

Xiaopeng Tang, Furong Gao, Changfu Zou et al
Applied Energy. Vol. 238, p. 423-434
Journal article
2018

A review of fractional-order techniques applied to lithium-ion batteries, lead-acid batteries, and supercapacitors

Changfu Zou, Lei Zhang, Xiaosong Hu et al
Journal of Power Sources. Vol. 390, p. 286-296
Review article
2018

Comparing water treatment topologies in Recirculating Aquaculture Plants

Simon Pedersen, Torsten Wik
Other conference contribution
2018

Electrochemical estimation and control for lithium-ion battery health-aware fast charging

Changfu Zou, Xiaosong Hu, Zhongbao Wei et al
IEEE Transactions on Industrial Electronics. Vol. 65 (8), p. 6635-6645
Journal article
2018

Light spectrum optimization for plant growth using biological feedback

Linnéa Ahlman, Daniel Bånkestad, Torsten Wik
Other conference contribution
2018

Adaption of 2-D look-up tables applied to OCV-curves for aged battery cells

Anton Klintberg, Torsten Wik
Other conference contribution
2018

A new method of scaling the gramian based input-output pairing methods for improved results

Fredrik Bengtsson, Torsten Wik, Elin Svensson
Other conference contribution
2018

Power capability prediction for lithium-ion batteries using economic nonlinear model predictive control

Changfu Zou, Anton Klintberg, Zhongbao Wei et al
Journal of Power Sources. Vol. 396, p. 580-589
Journal article
2018

Automatically adjusting light spectrum for optimal short term photosynthetic rate

Linnéa Ahlman, Daniel Bånkestad, Torsten Wik
Other conference contribution
2018

Charging pattern optimization for lithium-ion batteries with an electrothermal-aging model

Kailong Liu, Changfu Zou, Kang Li et al
IEEE Transactions on Industrial Informatics. Vol. 14 (12), p. 5463-5474
Journal article
2018

Resolving Issues of Scaling for Gramian Based Input-Output Pairing Methods

Fredrik Bengtsson, Torsten Wik, Elin Svensson
Other conference contribution
2018

Design of heat exchanger networks with good controllability

Elin Svensson, Karin Eriksson, Fredrik Bengtsson et al
Report
2018

Estimating power capability of aged lithium-ion batteries in presence of communication delays

Björn Fridholm, Torsten Wik, H. Kuusisto et al
Journal of Power Sources. Vol. 383, p. 24-33
Journal article
2017

A multiple input, multiple output model generator

Fredrik Bengtsson, Torsten Wik
Report
2017

Statistical modeling of OCV curves for aged battery cells

Anton Klintberg, Emil Klintberg, Björn Fridholm et al
IFAC-PapersOnLine. Vol. 50 (1), p. 2164-2168
Paper in proceeding
2017

Simulation of recirculating aquaculture systems in the OpenModelica environment

Simon Pedersen, Torsten Wik
4th NordicRAS Workshop on Recirculating Aquaculture Systems, p. 50-
Other conference contribution
2017

Theoretical bounds on the accuracy of state and parameter estimation for batteries

Anton Klintberg, Torsten Wik, B. Fridholm
American Control Conference, p. 4035-4041
Paper in proceeding
2017

Adaptive Hysteresis Compensation Using Reduced Memory Sequences

Marcus Hedegärd, Torsten Wik, C. Wallin
IEEE/ASME Transactions on Mechatronics. Vol. 22 (5), p. 2296-2307
Journal article
2017

Using chlorophyll a fluorescence gains to optimize LED light spectrum for short term photosynthesis

Linnéa Ahlman, Daniel Bånkestad, Torsten Wik
Computers and Electronics in Agriculture. Vol. 142, p. 224-234
Journal article
2017

State constrained optimal control via the Fokker-Planck equation

Per Rutquist, Torsten Wik, Claes Breitholtz
Proceedings 20th IFAC World Congress, July 9-14, 2017, Toulouse, France
Paper in proceeding
2016

Simulation of Recirculating Aquaculture Systems

Simon Pedersen, Torsten Wik
20th Nordic Process Control Workshop, Sigtuna, Aug 2016
Other conference contribution
2016

Growth tracking of basil by proximal remote sensing of chlorophyll fluorescence in growth chamber and greenhouse environments

Daniel Bånkestad, Torsten Wik
Computers and Electronics in Agriculture. Vol. 128, p. 77-86
Journal article
2016

Optimal state based control of LTI systems over unreliable communication channels

Fredrik Bengtsson, Babak Hassibi, Torsten Wik
Reglermöte 2016 (2016)
Other conference contribution
2016

Assessing the Controllability of Heat Exchanger Networks

Fredrik Bengtsson, Elin Svensson, Torsten Wik et al
Other conference contribution
2016

Complexity of Chlorophyll Fluorescence Dynamic Response as an Indicator of Excessive Light Intensity

Johan Lindqvist, Daniel Bånkestad, Anna-Maria Carstensen et al
IFAC-PapersOnLine. Vol. 49 (16), p. 392-397
Paper in proceeding
2016

Simulation of Recirculating Aquaculture Plants

Simon Pedersen, Torsten Wik
Regermöte, Göteborg 2016
Conference poster
2016

Robust recursive impedance estimation for automotive lithium-ion batteries

B. Fridholm, Torsten Wik, M. Nilsson
Journal of Power Sources. Vol. 304, p. 33-41
Journal article
2016

Remote detection of light tolerance in Basil through frequency and transient analysis of light induced fluorescence

Anna-Maria Carstensen, T. Pocock, Daniel Bånkestad et al
Computers and Electronics in Agriculture. Vol. 127, p. 289-301
Journal article
2016

LED spectrum optimisation using steady-state fluorescence gains

Linnéa Ahlman, Daniel Bånkestad, Torsten Wik
Acta Horticulturae. Vol. 1134, p. 367-374
Journal article
2016

Exploring the dynamics of remotely detected fluorescence transients from basil as a potential feedback for lighting control in greenhouses

Anna-Maria Carstensen, Torsten Wik, Daniel Bånkestad et al
Acta Horticulturae. Vol. 1134, p. 375-383
Journal article
2016

Cramér-Rao Lower Bounds for Battery Estimation

Anton Klintberg, Björn Fridholm, Torsten Wik
Reglermöte
Other conference contribution
2016

Kalman filter for adaptive learning of look-up tables with application to automotive battery resistance estimation

B. Fridholm, Torsten Wik, M. Nilsson
Control Engineering Practice. Vol. 48, p. 78-86
Journal article
2016

LQG Control for Systems with Random Unbounded Communication Delay

Fredrik Bengtsson, Babak Hassibi, Torsten Wik
Proceedings of the 55th IEEE Conference on Decision and Control (CDC 2016); Las Vegas; United States; 12-14 December 2016, p. Art no 7798406, Pages 1048-1055
Paper in proceeding
2015

Method and system for growth status determination of a plant

Anna-Maria Carstensen, Torsten Wik
Patent application
2015

Remote light stress detection for greenhouse LED lighting control

Anna-Maria Carstensen, Torsten Wik, Tessa Pocock
Proceedings 19th Nordic Process Control Workshop, p. 20:1-6
Other conference contribution
2015

Implementation and robustness of an analytically based battery state of power

Torsten Wik, B. Fridholm, H. Kuusisto
Journal of Power Sources. Vol. 287, p. 448-457
Journal article
2015

Marin fiskodling på den svenska västkusten: Tekniska lösningar

Anette Ungfors, Björn Thrandur Björnsson, Susanne Lindegarth et al
Report
2015

Reasons to apply operability analysis in the design of integrated biorefineries

Elin Svensson, Karin Eriksson, Torsten Wik
Biofuels, Bioproducts and Biorefining. Vol. 9 (2), p. 147-157
Journal article
2015

Using Fluorescence as Control Parameter to Decide Optimal Light Spectrum for Plant Growth

Linnéa Ahlman, Daniel Bånkestad, Torsten Wik
Proceedings 19th Nordic Process Control Workshop, Hurtigruta, Norway, Jan 2015, p. 9:1-4.
Other conference contribution
2014

Non-parametric convex identification of extended generalized Prandtl–Ishlinskii models

Marcus Hedegärd, Torsten Wik
Automatica. Vol. 50 (2), p. 465-474
Journal article
2014

Solving the Hamilton-Jacobi-Bellman equation for a stochastic system with state constraints

Per Rutquist, Torsten Wik, Claes Breitholtz
Proceedings of the IEEE Conference on Decision and Control. Vol. 2015-February, p. 1840-1845
Paper in proceeding
2014

Robustness comparison of battery state of charge observers for automotive applications

Björn Fridholm, Magnus Nilsson, Torsten Wik
IFAC Proceedings Volumes (IFAC-PapersOnline). Vol. 19, p. 2138-2146
Paper in proceeding
2014

Power and current limit estimation for batteries

Torsten Wik, Bjön Fridholm, Hannes Kuusisto
Patent application
2014

Convex identification of models for asymmetric hysteresis

Marcus Hedegärd, Torsten Wik
American Control Conference, p. 4753-4758
Paper in proceeding
2013

Excess light detection for greenhouse illumination

Torsten Wik, Anna-Maria Carstensen, Tessa Pocock
Proceedings 18th Nordic Process Control Workshop
Other conference contribution
2013

Method for controlling a growth cycle for growing plants using state oriented control

Kirk Clendinning, Tessa Pocock, Torsten Wik
Patent application
2012

Method for plant recovery from stress

Tessa Pocock, Anna-Maria Carstensen, Torsten Wik
Patent application
2012

Greenhouse Artificial Lighting Control

Torsten Wik, Anna-Maria Carstensen, Tessa Pocock
Proceedings 15th Nordic Process Control Workshop, p. 130-132
Other conference contribution
2012

Optimal Control of a Batch Reactor Using the Linearized Hamilton-Jacobi-Bellman Equation

Per Rutquist, Torsten Wik, Claes Breitholtz
Proceedings 15th Nordic Process Control Workshop, p. 187-188
Other conference contribution
2012

Spectrum optimization for artificial illumination

Torsten Wik, Anna-Maria Carstensen, Tessa Pocock
Patent application
2011

New Input-Output Pairing Strategies Based on Linear Quadratic Gaussian Control

Björn Halvarsson, Torsten Wik, Bengt Carlsson
Report
2011

Modeling and Simulation of RAS

Torsten Wik
Preprints Workshop on Recirculating Aquaculture Systems, p. 44-
Other conference contribution
2011

Finite-time state-constrained optimal control for input-affine systems with actuator noise

Per Rutquist, Claes Breitholtz, Torsten Wik
IFAC Proceedings Volumes (IFAC-PapersOnline). Vol. 18 (PART 1), p. 5915-5919
Paper in proceeding
2011

An online method for estimation of degradable substrate and biomass in an aerated activated sludge process

Marcus Hedegärd, Torsten Wik
Water Research. Vol. 45 (19), p. 6308-6320
Journal article
2010

State constrained control based on linearization of the Hamilton-Jacobi-Bellman equation

Torsten Wik, Per Rutquist, Claes Breitholtz
Proceedings of 49th IEEE Conference on Decision and Control. Atlanta, 15-17 December 2010, p. 5192-5197
Paper in proceeding
2010

State-Constrained Control Based on Linearization of the Hamilton-Jacobi-Bellman Equation

Torsten Wik, Per Rutquist, Claes Breitholtz
15th Nordic Process Control Workshop, Lund
Other conference contribution
2010

Automated Controller Design using Linear Quantitative Feedback Theory for Nonlinear systems

Roozbeh Kianfar, Torsten Wik
Reglermöte 2010
Other conference contribution
2010

Greenhouse Illumination Control

Anna-Maria Carstensen, Torsten Wik
15th Nordic Process Control Workshop, Lund
Other conference contribution
2010

Observer design for the activated sludge process

Marcus Hedegärd, Torsten Wik
Other conference contribution
2009

Non-conservative robust control: Optimized and constrained sensitivity functions

Carl-Magnus Fransson, Torsten Wik, Bengt Lennartson et al
IEEE Transactions on Control Systems Technology. Vol. 17 (2), p. 298-308
Journal article
2009

A New Input/Output Pairing Strategy based on Linear Quadratic Gaussian Control

Björn Halvarsson, Bengt Carlsson, Torsten Wik
Proc. 7th IEEE International Conference on Control and Automation, Dec. 9-11, Christchurch, New Zealand, p. 978-982
Paper in proceeding
2009

Automated Controller Design using Linear Quantitative Feedback Theory for Nonlinear systems

Roozbeh Kianfar, Torsten Wik
Proc. 7th IEEE International Conference on Control and Automation, Dec. 9-11, Christchurch, New Zealand. Vol. 1-3, p. 1955-1961
Paper in proceeding
2009

Integrated Dynamic Aquaculture and Wastewater Treatment Modelling for Recirculating Aquaculture Systems

Torsten Wik, Björn Linden, Per Wramner
Aquaculture. Vol. 287 (3-4), p. 361-370
Journal article
2008

Closed loop model reduction applied to a tank reactor process

Veronica Olesen, Claes Breitholtz, Torsten Wik
Chemical Engineering Science. Vol. 63 (3), p. 674-684
Journal article
2008

Tank reactor temperature control using Quantitative Feedback Theory

Veronica Olesen, Claes Breitholtz, Torsten Wik
Proceedings 17th IFAC World Congress
Paper in proceeding
2008

On the infinite-time solution to state-constrained stochastic optimal control

Per Rutquist, Claes Breitholtz, Torsten Wik
Automatica. Vol. 44 (7), p. 1800-1805
Journal article
2007

Quantitative feedback theory used on a tank reactor model

Veronica Olesen, Claes Breitholtz, Torsten Wik
Proceedings 14th Nordic Process Control Workshop, p. 36-37
Other conference contribution
2007

Quantitative assessment in frequency domain of reactor model simplification

Veronica Olesen, Claes Breitholtz, Torsten Wik
Report
2006

On the infinite-time solution to state-constrained stochastic optimal control problems

Per Rutquist, Claes Breitholtz, Torsten Wik
Reglermöte 2006
Paper in proceeding
2006

Nitrifierande biofilmer för biologisk kväverening i avloppsreningsverk

Malte Hermansson, Fred Sörensson, Per-Erik Lindgren et al
Report
2006

Low model order approximations of continuously stirred biofilm reactors with Monod kinetics

Torsten Wik, Elin Göransson, Claes Breitholtz
Biochemical Engineering Journal. Vol. 30 (1), p. 16-25
Journal article
2006

A closed loop perspective of model reduction for a CSTR

Veronica Olesen, Claes Breitholtz, Torsten Wik
Reglermöte 2006
Conference poster
2006

Development of a new course in Process control and measurement techniques: lifting the level of comprehension to a system level

Torsten Wik
Shifting Perspectives Engineering Education (Ed. Christie, Michael)
Book chapter
2005

An eigenvalue approach to infinite-horizon optimal control

Per Rutquist, Claes Breitholtz, Torsten Wik
Proceedings of the 16 th IFAC World Congress, Prague, Czech Republik
Paper in proceeding
2005

Influent load prediction using low order adaptive modeling

Johan Lindqvist, Torsten Wik, Dough Lumley et al
2nd IWA Conference on Instrumentation, Control and Automation
Paper in proceeding
2005

A Closed Loop Approach to Tank Reactor Model Simplification

Veronica Olesen, Torsten Wik, Claes Breitholtz
Proceedings of the 16th IFAC World Congress, Prague, Czech Republic
Paper in proceeding
2004

Modeling, control and simulation of recirculating aquaculture systems

Torsten Wik, B. Linden
9th IFAC Symposium on computer applications in biotechnology, Nancy, France. Vol. 37
Paper in proceeding
2004

Optimal control of battery supercapacitor systems

Per Rutquist, Claes Breitholtz, Torsten Wik
Reglermötet 2004
Paper in proceeding
2004

Feedforward feedback controller design for uncertain systems

Torsten Wik, Carl-Magnus Fransson, Bengt Lennartson
12th Nordic Process Control Workshop
Other conference contribution
2004

Model based control of external carbon dose rate in a full-scale predenitrification system

Torsten Wik, Daniel Olsson, Dough Lumley
Water Intelligens Online, IWA Publishing
Journal article
2004

Model reduction for temperature control of non-ideally stirred tank reactors

Veronica Olesen, Torsten Wik, Claes Breitholtz
Reglermötet 2004, Institutionen för signaler och system, Reglerteknik och automation.
Paper in proceeding
2004

A modeling, control and simulation study of recirculating aquaculture systems

Torsten Wik
12th Nordic Process Control Workshop, p. 31-38
Paper in proceeding
2004

Feedforward feedback controller design for uncertain systems

Torsten Wik, Carl-Magnus Fransson, Bengt Lennartson
12th Nordic Process Control Workshop, p. 39-
Paper in proceeding
2004

Trickling filters and biofilm modelling

Torsten Wik
Reviews in Environmental Science and Biotechnology. Vol. 2 (2), p. 193-212
Journal article
2004

Parameter sensitivity in a compartmental model of a non-ideally stirred tank reactor

Veronica Olesen, Claes Breitholtz, Torsten Wik
12th Nordic Process Control Workshop (29-30)
Paper in proceeding
2004

Trickling filters

Torsten Wik
Biofilms in natural and engineered aqueous systems, chapter Chapter 9, p. Chapter 9-
Book chapter
2003

Erfarenheter av modellbaserad styrning av etanoldosering vid Ryaverket

D. Lumley, Torsten Wik, G. Aijälä
8:e Nordiska avloppsvattenkonferensen
Paper in proceeding
2003

Feedforward Feedback Controller Design for Uncertain Systems

Torsten Wik, Carl-Magnus Fransson, Bengt Lennartson
Proc. 42nd Conference on Decision and Control, Maui, HI
Paper in proceeding
2003

Model based control of external carbon dose rate in a full-scale predenitrification system

Torsten Wik, D. Olsson, D. Lumley
9th IWA conference on design, operation and economics of large wastewater treatment plants, p. 133-140
Paper in proceeding
2002

Distribution and activity of ammonia oxidizing bacteria in a large full-scale trickling filter

F. Persson, Torsten Wik, F. Sörensson et al
Water Research. Vol. 36 (6), p. 1439-1448
Journal article
2002

Global Controller Optimization Using Horowitz Bounds

Carl-Magnus Fransson, Bengt Lennartson, Torsten Wik et al
IFAC World Congress, Barcelona, Spain
Paper in proceeding
2001

H-inf control of uncertain systems using Horowitz bounds

Carl-Magnus Fransson, Bengt Lennartson, Torsten Wik et al
American Control Conference, Arlington, VA, USA
Paper in proceeding
2001

Multi criteria controller design for uncertain MIMO systes using nonconvex global optimization

Carl-Magnus Fransson, Bengt Lennartson, Torsten Wik et al
40th Conference on Decision and Control, Orlando, FL, USA
Paper in proceeding
2000

On optimizing PID controllers for uncertain plants using Horowitz bounds

Carl-Magnus Fransson, Bengt Lennartson, Torsten Wik et al
IFAC Workshop on digital control: Past, present, and future of PID control, Terassa, Spain
Paper in proceeding
2000

Strategies to improve the efficiency of tertiary nitrifying trickling filters

Torsten Wik
Water Science and Technology. Vol. 41 (4), p. 477-485
Journal article
1999

Recovery of carbon black from scrap rubber

J. Piskorz, P. Majerski, D. Radlein et al
Energy and Fuels. Vol. 13 (3), p. 544-551
Journal article
1999

Adsorption and Denitrification in Nitrifying Trickling Filters

Torsten Wik
Water Research. Vol. 33 (6), p. 1500-1508
Journal article
1999

Strategies to improve the efficiency of tertiary nitrifying trickling filters

Torsten Wik
Proc. IAWQ Conference on Biofilm Systems, New York, p. 1055-1062
Paper in proceeding
1999

Rational Transfer Function Models for Nitrifying Trickling Filters

Torsten Wik
Water Science and Technology. Vol. 39 (4), p. 121-128
Journal article
1998

Rational Transfer Functions for Biofilm Reactors

Torsten Wik, Claes Breitholtz
AICHE Journal. Vol. 44 (12), p. 2647-2657
Journal article
1998

Rational Transfer Function Models for Nitrifying Trickling Filters

Torsten Wik
Preprints of AQUATECH '98 Conference on Application of Models in Water Management, Amsterdam, The Netherlands, p. 241-248
Paper in proceeding
1998

Transfer Function Models for Biofilm Reactors and Reactors with Porous Catalyst

Torsten Wik, Claes Breitholtz
Preprints of 8th Nordic Process Control Workshop, Skeviks Gård, Stockholm, Sweden, p. 242-
Paper in proceeding
1998

Transfer function models for CSTs with diffusion and reaction in biofilms or permeable catalysts

Torsten Wik, Claes Breitholtz
Preprints Reglermöte '98, Lunds tekniska högskola, p. 137-141
Paper in proceeding
1997

Evaluation of the fast dynamics in a nitrifying biofilm reactor

Torsten Wik
Preprints of the 7th Nordic Process Control Workshop, Vinstra, Norway, p. 290-
Paper in proceeding
1997

Modelling dynamics of nitrifying trickling filters and ammonium meters

Torsten Wik
Med. Fac. Landbouww. Univ. Gent. Vol. 62 (4b), p. 1641-1648
Journal article
1997

Modelling Nitrifying Trickling Filters

Torsten Wik
VATTEN. Vol. 53 (1), p. 33-42
Journal article
1997

Evaluation of the fast dynamics in a nitrifying biofilm reactor

Torsten Wik
Preprints of the 7th Nordic Process Control Workshop, Vinstra, Norway
Other conference contribution
1997

Modelling dynamics of nitrifying trickling filters and ammonium meters

Torsten Wik
Proc. 11th Forum for Applied Biotechnology, Compure links 653, B-9000 Gent, Belgium. Vol. 62 (4b), p. 1641-1648
Paper in proceeding
1996

Dynamic Modeling of Nitrifying Trickling Filters

Torsten Wik
Licentiate thesis
1996

An investigation of the fast dynamics in a nitrifying biofilm reactor

Torsten Wik
Proc of the 10th International Biotechnology Symposia , Sydney, Australia, p. 161-
Paper in proceeding
1996

Steady state solution of a two-species biofilm problem

Torsten Wik, Claes Breitholtz
Biotechnology and Bioengineering. Vol. 50 (6), p. 675-686
Journal article
1996

En jämförelse mellan impulssvar med spårämne och stegsvar med reaktant för en icke-linjär process

Torsten Wik
Preprints, Reglermöte 96, Luleå, Sweden
Paper in proceeding
1995

Nitrification in a tertiary trickling filter at high hydraulic loads - pilot plant operation and mathematical modelling

Torsten Wik, A. Mattsson, E. Hansson et al
Water Science and Technology. Vol. 32 (8), p. 185-192
Journal article
1995

Nitrification in a tertiary trickling filter at High Hydraulic Loads - Pilot Plant Operation and Mathematical Modelling

Torsten Wik, A. Matsson, E. Hansson et al
Int Workshop on Biofilm Structure, Growth and Dynamics, Noordvijkerhout, The Netherlands
Paper in proceeding
1994

Modelling the Dynamics of a Trickling Filter for Waste Water Treatment

Torsten Wik, Claes Lindeborg
Proceedings of the Third IEEE Conference on Control Applications, 1994. Vol. 2, p. 1035 - 1040
Paper in proceeding
1994

Modelling the Dynamics of a Trickling Filter for Waste Water Treatment

Torsten Wik, Claes Lindeborg
Preprints of the 5th Nordic Process Control Workshop, Lyngby, Denmark
Other conference contribution

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Showing 44 research projects

2025–2026

Physics-guided ML to build digital twin for wind-assisted propulsion ships

Wengang Mao Marine Technology
Torsten Wik Automatic Control
Scott Mackinnon Nautical Studies
Chi Zhang Marine Technology
AoA Transport

2024–2026

Sustainable and innovative wastewater treatment with bioelectrochemical-based sensor and aerobic granular sludge

Britt-Marie Wilen Water Environment Technology
Frank Persson Water Environment Technology
Oskar Modin Water Environment Technology
Torsten Wik Automatic Control
Formas

2024–2026

Machine Learning assisted electrodeposition process for sustainable spent lithium-ion battery recycling

Zhenyuan Xia Materials and manufacture
Torsten Wik Automatic Control
Changfu Zou Automatic Control
Chalmers

2024–2025

Aging-Aware Techno-Economic Decision Making for Optimal Usage of EV Batteries over Full Lifecycle

Torsten Wik Automatic Control
Swedish Energy Agency

2024–2024

Monitoring Microscale Inhomogeneity in Lithium-ion Battery Using Multi-Sensor Information and Data-Driven Approaches

Xiaolei Bian Automatic Control
Torsten Wik Automatic Control
Aleksandar Matic Materials Physics
Changfu Zou Automatic Control
Shizhao Xiong Materials Physics
Chalmers AoA

2024–2027

Multiphysics modelling and monitoring of lithium-ion cells for next-generation management

Changfu Zou Automatic Control
Torsten Wik Automatic Control
Yicun Huang Automatic Control
Swedish Research Council (VR)

2023–2027

E-powertrain predictive maintenance using physics informed learning (TEAMING)

Changfu Zou Automatic Control
Godwin Peprah Automatic Control
Xiaolei Bian Automatic Control
Yicun Huang Automatic Control
Albert Skegro Automatic Control
Torsten Wik Automatic Control
European Commission (EC)

2023–2027

Heavy Electrified Road transport for iron ore in the Arctic (HERA)

Torsten Wik Automatic Control
Swedish Energy Agency

2023–2025

Data-driven lifetime extension and performance optimization for vehicle battery systems

Changfu Zou Automatic Control
Torsten Wik Automatic Control
Yizhou Zhang Automatic Control
Swedish Energy Agency

2 publications exist
2023–2027

Faster fast-charging and extended lifetime of lithium-ion batteries by new onboard monitoring of degradation using feedback from new cheap sensors

Torsten Wik Automatic Control
Jinhua Sun Materials and manufacture
Changfu Zou Automatic Control
Xiaolei Bian Automatic Control
Isac Borghed Automatic Control
Swedish Energy Agency

2023–2026

Next Generation Hydrofoil Systems for Robust and Effective Electric Work Boats (NG-FREEBS)

Torsten Wik Automatic Control
Swedish Transport Administration

2023–2024

Exploring the impact of simulation governance on the development of electrified powertrains

Torsten Wik Automatic Control
Swedish Energy Agency

2022–2026

User behaviour informed optimal control for vehicle-home-grid integration

Changfu Zou Automatic Control
Torsten Wik Automatic Control
Swedish Energy Agency

2022–2025

Electric vehicle energy optimization for improved sustainability

Changfu Zou Automatic Control
Torsten Wik Automatic Control
Yizhou Zhang Automatic Control
Albert Skegro Automatic Control
Godwin Peprah Automatic Control
The Swedish Foundation for International Cooperation in Research and Higher Education (STINT)

2021–2021

Electrochemical model parameter identification for health-aware battery management

Yang Li Automatic Control
Evelina Wikner Electrical Machines and Power Electronics
Changfu Zou Automatic Control
Torsten Wik Automatic Control
Chalmers

2021–2024

Estimation and optimization of key lithium-ion battery physical characteristics in hybrid plug-in electric vehicles.

Torsten Wik Automatic Control
Weiji Han Automatic Control
The Swedish Foundation for International Cooperation in Research and Higher Education (STINT)

2021–2022

Growth tracking and light optimization in greenhouse

Torsten Wik Automatic Control
VINNOVA

1 publication exists
2021–2023

Facilitating detection, understanding production, and improving mitigation of undesired taste and odour compounds in aquaculture

Oskar Modin Water Environment Technology
Dan Zheng Water Environment Technology
Britt-Marie Wilen Water Environment Technology
Torsten Wik Automatic Control
Formas

1 publication exists
2020–2023

Thermal safety management for vehicle battery systems

Xiaobo Qu Geology and Geotechnics
Torsten Wik Automatic Control
VINNOVA

1 publication exists
2020–2021

Maskininlärning för automatisk stressdetektion i hortikulturell produktion

Torsten Wik Automatic Control
VINNOVA

2020–2023

Data driven battery aging prediction

Changfu Zou Automatic Control
Torsten Wik Automatic Control
Yizhou Zhang Automatic Control
Swedish Energy Agency

9 publications exist
2020–2023

Thermal modelling and fault prognosis for Li-ion battery systems

Changfu Zou Automatic Control
Torsten Wik Automatic Control
Godwin Peprah Automatic Control
Swedish Electromobility Centre

2 publications exist
2020–2023

Battery control via adaptive modeling and predictive control

Changfu Zou Automatic Control
Torsten Wik Automatic Control
Swedish Research Council (VR)

6 publications exist
2020–2023

BattVolt - Battery control with dynamic reconfiguration and controllable voltage

Torsten Wik Automatic Control
Albert Skegro Automatic Control
Changfu Zou Automatic Control
Chalmers
Mistra Innovation

1 publication exists
2020–2022

Dynamic reconfiguration of vehicle battery systems

Torsten Wik Automatic Control
Changfu Zou Automatic Control
Yujing Liu Electrical Machines and Power Electronics
Xiaoliang Huang Electrical Machines and Power Electronics
Chalmers

2019–2021

Ny metod för biotisk stressdetektering i hortikulturell produktion

Torsten Wik Automatic Control
Statens jordbruksverk

1 publication exists
2019–

Battery Management

Torsten Wik Automatic Control
Chalmers

2 publications exist
2018–2020

Multi-level energy management system of hybrid electric vehicles, part 2

Tomas McKelvey Signal Processing
Maryam Razi Mechatronics
Nikolce Murgovski Mechatronics
Torsten Wik Automatic Control
Chalmers

2018–2024

A new generation of algorithms for modern powertrain control

Anand Ganesan Automatic Control
Nikolce Murgovski Mechatronics
Sebastien Gros Automatic Control
Torsten Wik Automatic Control
Derong Yang Vehicle Engineering and Autonomous Systems
VINNOVA

3 publications exist
2018–2025

PhD Program in Electrical Power and Control Engineering with Addis Abeba University

Erik Ahlgren Energy Technology
Stanislaw Gubanski Power grids and Components
Massimo Bongiorno Power grids and Components
Jimmy Ehnberg Power grids and Components
Torsten Wik Automatic Control
Mebtu Bihonegn Beza Power grids and Components
SIDA

2018–2019

Optimal usage of vehicle battery by multi-scale modelling

Patrik Johansson Condensed Matter Physics
Torsten Wik Automatic Control
Changfu Zou Automatic Control
Swedish Electromobility Centre
Chalmers

2017–2020

Electrified transport system demo platform involving trucks and high capacity city buses

Anders Grauers Automatic Control
Torsten Wik Automatic Control
Swedish Energy Agency

2017–2019

Battery Management

Torsten Wik Automatic Control
Changfu Zou Automatic Control
Anton Klintberg Automatic Control
Patrik Johansson Condensed Matter Physics
Chalmers

2017–2022

More efficient and health conscious usage of lithium ion batteries by adaptive modeling

Torsten Wik Automatic Control
Patrik Johansson Materials Physics
Lukas Wikander Automatic Control
Changfu Zou Automatic Control
Swedish Energy Agency

2 publications exist
2016–2017

Skattning av cylinderseparerat cylindertryck för effektivare och renare förbränning.

Marcus Hedegärd Automatic Control
Torsten Wik Automatic Control
Swedish Energy Agency
Volvo Group

2015–2016

Life-Long Battery Control

Torsten Wik Automatic Control
Swedish Energy Agency

2014–2015

NÄRFISK-14

Torsten Wik Automatic Control
VINNOVA

2014–2018

Development of NOvel, high‐quality MArine aquaCULTURE in Sweden ‐ with focus on environmental and economic sustainability (NOMACULTURE)

Torsten Wik Automatic Control
Ingrid Undeland Food and Nutrition Science
The Swedish Foundation for Strategic Environmental Research (Mistra)

5 publications exist
2014–2016

Estimation of cylinder separated torque for efficient and clean combustion

Torsten Wik Automatic Control
Swedish Energy Agency

2012–2014

BatMan - förberedelse för förbättrad återanvändning av batterisystem

Olivier Petit Fluid Dynamics
Anne-Marie Tillman Environmental Systems Analysis
Lars Davidson Fluid Dynamics
Duncan Kushnir Environmental Systems Analysis
Bo Egardt Automatic Control
Torsten Wik Automatic Control
Swedish Energy Agency

2012–2014

Experimental RAS plant technology

Torsten Wik Automatic Control
Erik Windhede Automatic Control
VINNOVA

2012–2017

Intelligent Light

Linnéa Ahlman Automatic Control
Torsten Wik Automatic Control
Anna-Maria Carstensen Automatic Control
The Swedish Foundation for Strategic Environmental Research (Mistra)

4 publications exist
2012–2014

State-of-Function for energy storage systems in electrified vehicles

Torsten Wik Automatic Control
Swedish Energy Agency

There might be more projects where Torsten Wik participates, but you have to be logged in as a Chalmers employee to see them.