Karl H. Johansson

Headshot Photo
First Name: 
Karl
Last Name: 
Johansson

Karl H. Johansson is Director of the Stockholm Strategic Research Area ICT The Next Generation and Professor at the School of Electrical Engineering, KTH Royal Institute of Technology, Sweden. He received MSc and PhD degrees from Lund University. He has held visiting positions at UC Berkeley, California Institute of Technology, Nanyang Technological University, Institute of Advanced Studies Hong Kong University of Science and Technology, and Norwegian University of Science and Technology. His research interests are in networked control systems, cyber-physical systems, and applications in transportation, energy, and automation systems. He is a member of the IEEE Control Systems Society Board of Governors and the European Control Association Council. He is past Chair of the IFAC Technical Committee on Networked Systems. He has been on the Editorial Boards of Automatica, IEEE Transactions on Automatic Control, and IET Control Theory and Applications. He is currently a Senior Editor of IEEE Transactions on Control of Network Systems and Associate Editor of European Journal of Control. He was the General Chair of the ACM/IEEE Cyber-Physical Systems Week 2010 in Stockholm and IPC Chair of many conferences. He received the Best Application Paper Award of IEEE Transactions on Automation Science and Engineering 2015, the Best Theory Paper Award of the World Congress on Intelligent Control and Automation 2014, and the Best Paper Award of the IEEE International Conference on Mobile Ad-hoc and Sensor Systems 2009. In 2009 he was awarded Wallenberg Scholar, as one of the first ten scholars from all sciences, by the Knut and Alice Wallenberg Foundation. He has held a Senior Researcher Position with the Swedish Research Council. He was awarded Future Research Leader from the Swedish Foundation for Strategic Research in 2005. He received the triennial Young Author Prize from IFAC in 1996 and the Peccei Award from the International Institute of System Analysis, Austria, in 1993. He was granted Young Researcher Awards from Scania in 1996 and from Ericsson in 1998 and 1999. He is a Fellow of the IEEE.

Contact Information
Email: 
kallej@kth.se
Affiliation: 
Royal Institute of Technology, Sweden
Position: 
CSS Board of Governors, term ending 31 December 2018 (elected); Distinguished Lecturer; TCNS Senior Editor

Distinguished Lecture Program

Talk Title: Cyber-physical control of road freight transport

Freight transportation is of outmost importance for the development of our society and economy. At the same time, transporting goods on roads accounts for a significant amount of all energy consumption and greenhouse gas emissions. Despite this influence, road transportation is mainly done today by individual long-haulage trucks with no real-time coordination or global optimization. In this lecture, we will discuss how modern information and communication technology supports a cyber-physical transportation system architecture with an integrated logistic system coordinating fleets of trucks traveling together in vehicle platoons. From the reduced air drag, platooning trucks traveling close together can save more than 10% of their fuel consumption. Control and estimation challenges and solutions on various level of this transportation system will be presented. It will be argued that a system architecture utilizing vehicle-to-vehicle and vehicle-to-infrastructure communication enables safe and optimal control of individual trucks as well as optimized vehicle fleet collaborations. Empirical evidence will be presented for why large-scale fleet coordination is mainly a scheduling (not a routing) problem. Incentives for cooperation and pricing of transport services will also be discussed. Several experiments done on European highways will illustrate achievable system performance and potential obstacles to be overcome. The presentation will be based on joint work with collaborators at KTH and at the truck manufacturer Scania.  

Talk Title: Cyber-secure control systems

Cyber-attacks on critical infrastructures are of growing societal concern. Several malicious attacks have been reported over the last few years and in many cases they have targeted control systems. The increasing use of off-the-shelf software and hardware components and open communication networks makes networked control systems vulnerable to cyber-attacks. As the cyber and physical components of these systems are tightly interconnected, traditional IT security focusing on the cyber part does not provide appropriate solutions. In this talk, we will discuss how to model, analyze and design cyber-secure networked control systems. We will introduce an adversary modeling framework and use it for quantifying cyber-security of control systems by means of constrained optimization problems. An attack space defined by the adversary's model knowledge, disclosure, and disruption resources is presented. It is shown that attack scenarios corresponding to denial-of-service, replay, zero-dynamics, and bias injection attacks can be analyzed using this framework. Applications to power networks and process industry will be used to illustrate the attack scenarios, their consequences, and potential countermeasures.

Talk Title: Wireless event-based control

There is a growing deployment of wireless networks in industrial control systems. Lower installation costs and efficient system reconfigurations for wireless devices have a major influence on the future application of distributed control. Traditional sampled-data control is based on periodic sensing and actuation rather than the acting when the system needs attention.  Event-based control instead is reactive and generates sensor  sampling and control actuation when the plant needs it. In this  talk, we will discuss how to design event-based control systems.  It will be shown how wireless access scheme for can influence  the closed-loop performance of the networked control system.  It will be argued that the underlying scheduling control problem  has a non-classical information structure. Appropriate models  for medium access control protocols will be introduced.  It will be shown how these protocols can be tuned for various  wireless control applications. The talk will be illustrated by  several examples from ongoing projects with Swedish industry.  The presentation is based on joint work with several collaborators.