Guest talk by Prof. Michelle S. Chong

Abstract:
Secure state estimation is the problem of estimating the states of a dynamical system when some of the sensor outputs are under possibly unbounded attack. These algorithms come with the outstanding guarantee that the state estimates converge to the true states with a bound that is independent of the attack. In this talk, we focus on the scenario where the sensors are potentially under attack and the sensor data is only transmitted intermittently. This study captures a majority of cyber-physical systems today, which are large-scale sensor networks connected by a communication medium. The sensors and the communication medium are vulnerable entry points targeted by malicious agents which can lead to dramatic consequences as seen in recent years. Due to the communication medium's finite capacity, the sensor measurements are sent over the channel as data packets asynchronously and hence are only available to the estimation algorithm intermittently. I will present our recent results for secure state estimation with asynchronously and intermittently available measurements. I will also illustrate its application to monitoring the health of power distribution systems.        

Bio:
Michelle Chong is an Assistant Professor at the Department of Mechanical Engineering, Eindhoven University of Technology, the Netherlands. She received the Bachelor of Engineering degree in Electrical Engineering, and the Ph.D. degree in mathematical control theory from the Department of Electrical and Electronic Engineering, the University of Melbourne, in 2008 and 2013, respectively. From 2013 to 2015, she was a postdoctoral researcher at the Department of Electrical and Computer Engineering, the University of California Santa Barbara, USA. From 2015 to 2017, she was a postdoctoral researcher at the Department of Automatic Control, Lund University, Sweden and from 2018 to 2019, at the Division of Decision and Control Systems, KTH Royal Institute of Technology, Sweden. Since 2020, she is an Assistant Professor at the Department of Mechanical Engineering, TU Eindhoven, the Netherlands. Michelle was the 2013 recipient of the American Australian Association's postdoctoral fellowship, and won the best paper award at the 2016 ACM/IEEE 7th International Conference on Cyber-Physical Systems (ICCPS). She is currently serving on the editorial board of the IEEE CSS Letters, and the IFAC Journal Nonlinear Analysis: Hybrid Systems, as well as the conference editorial board of the IEEE CSS conferences. Her research interests are in the secure estimation and control for hybrid systems.

Email: m.s.t.chongtuenl

Website: http://www.michellestchong.com