Fault detection and isolation of malicious nodes in MIMO Multi-hop Control Networks

TL;DR

This paper establishes necessary and sufficient conditions for detecting and isolating malicious nodes in MIMO multi-hop control networks, enhancing security and reliability in wireless control systems.

Contribution

It provides a theoretical framework with conditions on plant dynamics and communication protocols for fault detection and isolation of malicious nodes in MCNs.

Findings

Derived necessary and sufficient conditions for FDI in MCNs

Characterized the impact of communication protocol on fault detectability

Enhanced understanding of security in wireless multi-hop control networks

Abstract

A MIMO Multi-hop Control Network (MCN) consists of a MIMO LTI system where the communication between sensors, actuators and computational units is supported by a (wireless) multi-hop communication network, and data flow is performed using scheduling and routing of sensing and actuation data. We provide necessary and sufficient conditions on the plant dynamics and on the communication protocol configuration such that the Fault Detection and Isolation (FDI) problem of failures and malicious attacks to communication nodes can be solved.