Modeling, analysis and design of secure networked control systems

Event-Triggered Control Through the Eyes of a Hybrid Small-Gain Theorem

AI Maass, W Wang, D Nesic, R Postoyan, WPMH Heemels

2022-01-01

A unifying design perspective is presented for emulation-based (dynamic) event-triggered state-feedback control of nonlinear syste..

Asynchronous Distributed Optimization via Dual Decomposition and Block Coordinate Subgradient Methods

Yankai Lin, Iman Shames, Dragan Nesic

2021-09-01

In this article, we study the problem of minimizing the sum of potentially nondifferentiable convex cost functions with partially ..

An Unknown Input Multiobserver Approach for Estimation and Control Under Adversarial Attacks

Tianci Yang, Carlos Murguia, Margreta Kuijper, Dragan Nesic

2021-03-01

We address the problem of state estimation, attack isolation, and control of discrete-time linear time-invariant systems under (po..

On Privacy of Dynamical Systems: An Optimal Probabilistic Mapping Approach

Carlos Murguia, Iman Shames, Farhad Farokhi, Dragan Nesic, H Vincent Poor

2021-01-01

We address the problem of maximizing privacy of stochastic dynamical systems whose state information is released through quantized..

A unifying event-triggered control framework based on a hybrid small-gain theorem

W Wang, D Nesic, R Postoyan, WPMH Heemels

2020-12-14

We propose a unifying emulation-based design framework for the event-triggered control of nonlinear systems that is based on a hyb..

A multi-observer based estimation framework for nonlinear systems under sensor attacks

T Yang, C Murguia, M Kuijper, D Nešić

2020-09-01

For general discrete-time nonlinear systems, we address the state estimation problem under sensor attacks. We provide a general es..

Observer design for non-linear networked control systems with persistently exciting protocols

AI Maass, D Nesic, R Postoyan, PM Dower

2020-07-01

We study the design of state observers for nonlinear networked control systems (NCSs) affected by disturbances and measurement noi..

Security metrics and synthesis of secure control systems

C Murguia, I Shames, J Ruths, D Nešić

2020-05-01

The term stealthy has come to encompass a variety of techniques that attackers can employ to avoid being detected. In this manuscr..

Asynchronous Distributed Optimization via Dual Decomposition and Block Coordinate Ascent

Y Lin, I Shames, D Nesic

2020-03-12

We study a class of distributed optimization problems of minimizing the sum of potentially non-differentiable convex objective fun..

Optimistic planning for the near-optimal control of nonlinear switched discrete-time systems with stability guarantees

M Granzotto, R Postoyan, L Busoniu, D Nesic, J Daafouz

2020-03-12

Originating in the artificial intelligence literature, optimistic planning (OP) is an algorithm that generates near-optimal contro..

Reverse Average Dwell-Times for Networked Control Systems

SHJ Heijmans, R Postoyan, D Nesic, WPMH Heemels

2020-03-12

Most emulation-based results in networked control systems rely on a bound on the maximal allowable transmission interval (MATI) un..

Stability guarantees for nonlinear discrete-time systems controlled by approximate value iteration

Romain Postoyan, Mathieu Granzotto, Lucian Busoniu, Bruno Scherrer, Dragan Nesic, Jamal Daafouz

2020-03-12

Value iteration is a method to generate optimal control inputs for generic nonlinear systems and cost functions. Its implementatio..

State-feedback event-holding control for nonlinear systems

W Wang, D Nesic, R Postoyan, I Shames, WPMH Heemels

2020-03-12

We propose a novel triggering policy to implement state-feedback controllers for nonlinear systems via packet-based communication ..

Periodic Event-Triggered Control for Nonlinear Networked Control Systems

Wei Wang, Romain Postoyan, Dragan Nesic, WPMH Heemels

2020-02-01

Periodic event-triggered control (PETC) is an appealing paradigm for the implementation of controllers on platforms with limited c..

Privacy Against State Estimation: An Optimization Framework based on the Data Processing Inequality

Carlos Murguia, Iman Shames, Farhad Farokhi, Dragan Nesic

2020-01-01

Information about the system state is obtained through noisy sensor measurements. This data is coded and transmitted to a trusted ..

Stochastic stabilisation and power control for nonlinear feedback loops communicating over lossy wireless networks

Alejandro Maass, Dragan Nesic, Vineeth S Varma, Romain Postoyan, Samson Lasaulce

2020-01-01

We study emulation-based stabilisation of nonlinear networked control systems communicating over multiple wireless channels subjec..

L-p stability of networked control systems implemented on WirelessHART

Alejandro I Maass, Dragan Nesic, Romain Postoyan, Peter M Dower

2019-11-01

This paper provides results on input–output Lp stability of networked control systems (NCSs) implemented over WirelessHART (WH). W..

Stabilization of Non-Linear Networked Control Systems Closed Over a Lossy WirelessHART Network

AI Maass, D Nesic

2019-10-01

This letter studies the stabilization of non-linear networked control systems (NCSs) where the information between plant and contr..

Consensus and influence power approximation in time-varying and directed networks subject to perturbations

S Martin, I-C Morarescu, D Nesic

2019-07-25

The paper focuses on the analysis of multi‐agent systems interacting over directed and time‐varying networks in presence of parame..

An unknown input multi-observer approach for estimation, attack isolation, and control of lti systems under actuator attacks

T Yang, C Murguia, M Kuijper, D Nesic

2019-06-01

We address the problem of state estimation, attack isolation, and control for discrete-time Linear Time Invariant (LTI) systems un..

Stability analysis of networked linear control systems with direct-feedthrough terms

Stefan Heijmans, Romain Postoyan, Dragan Nesic, Navid Noroozi, Maurice Heemels

2018-10-01

We consider networked control systems (NCSs) composed of a linear plant and a linear controller interconnected by packet-based com..

Compressive Sensing in Fault Detection

F Farokhi, I Shames

2018-08-09

Randomly generated tests are used to identify faulty sensors in large-scale discrete-time linear time-invariant dynamical systems ..

Concepts for improved availability and computational power in automated driving

S Grubmueller, G Stettinger, D Nesic, D Watzenig

2018-08-01

Automated vehicles are required to operate on highways and in complex urban scenarios. To safely handle these complex environmenta..

Open Multi-Agent Systems with Discrete States and Stochastic Interactions

VS Varma, IC Morarescu, D Nesic

2018-07-01

We consider a multi-agent system in which agents arrive and depart from a network randomly as a Bernoulli process. Each agent that..

A Generalized Hybrid Lyapunov Proof for Networked Control Systems: Improving the Maximum Allowable Transmission Interval

Stefan HJ Heijmans, Dragan Nesic, Romain Postoyan, WP Maurice H Heemels

2018-01-01

A popular design framework for networked control systems (NCSs) is the emulation-based approach combined with hybrid dynamical sys..

A Multi-Observer Approach for Attack Detection and Isolation of Discrete-Time Nonlinear Systems

Tianci Yang, Carlos Murguia, Margreta Kuijper, Dragan Nesic

2018-01-01

We address the problem of attack detection and isolation for a class of discrete-time nonlinear systems under (potentially unbound..

A Robust Circle-criterion Observer-based Estimator for Discrete-time Nonlinear Systems in the Presence of Sensor Attacks

Tianci Yang, Carlos Murguia, Margreta Kuijper, Dragan Nesic

2018-01-01

We address the problem of robust state estimation and attack isolation for a class of discrete-time nonlinear systems with positiv..

Observer design for networked control systems implemented over WirelessHART

Alejandro I Maass, Dragan Nesic, Romain Postoyan, Peter M Dower

2018-01-01

We study the design of state observers for nonlinear networked control systems (NCSs) that are implemented over WirelessHART (WH)...

On Privacy of Quantized Sensor Measurements through Additive Noise

Carlos Murguia, Iman Shames, Farhad Farokhi, Dragan Nesic

2018-01-01

We study the problem of maximizing privacy of quantized sensor measurements by adding random variables. In particular, we consider..

Periodic event-triggered output feedback control of nonlinear systems

W Wang, R Postoyan, D Nesic, WPMH Heemels

2018-01-01

We investigate the stabilization of perturbed nonlinear systems using output-based periodic event-triggered controllers. Thus, the..

Periodic event-triggered supervisory control of nonlinear systems: dwell-time switching logic

W Wang, D Nesic, I Shames

2018-01-01

We consider supervisory control of nonlinear systems which are implemented on digital networks. In particular, two candidate contr..

Secure Control of Nonlinear Systems Using Semi-Homomorphic Encryption

Yankai Lin, Farhad Farokhi, Iman Shames, Dragan Nesic

2018-01-01

A secure nonlinear networked control system (NCS) design using semi-homomorphic encryption, namely, Paillier encryption is studied..

Singularly Perturbed Networked Control Systems

SHJ Heijmans, D Nešić, R Postoyan, WPMH Heemels

2018-01-01

We study networked control systems (NCSs) where the controller is given by a state-feedback law and the plant is modeled by a dyna..

Corrigendum to "On eigenvalues of Laplacian matrix for a class of directed signed graphs" (vol 523, pg 281, 2017)

Saeed Ahmadizadeh, Iman Shames, Samuel Martin, Dragan Nesic

2017-10-01

This note corrects an error in the results of Subsection 3.1 in authors' paper “On Eigenvalues of Laplacian Matrix for a Class of ..

Observer design for networked control systems with FlexRay

Wei Wang, Dragan Nesic, Romain Postoyan

2017-08-01

We design state observers for nonlinear networked control systems (NCS) implemented over FlexRay. FlexRay is a communication proto..

Security analysis of cyber-physical systems using H-2 norm

Iman Shames, Farhad Farokhi, Tyler H Summers

2017-07-14

In this paper, we study the effect of attacks on networked systems and propose a new security index to analyze the impact of such ..

On eigenvalues of Laplacian matrix for a class of directed signed graphs

Saeed Ahmadizadeh, Iman Shames, Samuel Martin, Dragan Nesic

2017-06-15

The eigenvalues of the Laplacian matrix for a class of directed graphs with both positive and negative weights are studied. The La..

Emulation-based stabilisation of networked control systems over WirelessHART

AI Maass, D Nesic, R Postoyan, PM Dower, V S Varma

2017-01-01

We study the emulation-based stabilisation of nonlinear networked control systems (NCSs) implemented over WirelessHART (WH). WH is..

Secure and Private Cloud-Based Control Using Semi-Homomorphic Encryption

Farhad Farokhi, Iman Shames, Nathan Batterham

2016-01-01

Networked control systems with encrypted sensors measurements is considered. Semi-homomorphic encryption is used so that the contr..