Mitigating Sensor Attacks Against Industrial Control Systems

• Main Authors: Luis F. Combita, Alvaro Cardenas, Nicanor Quijano
• Format: Article
• Language: English
• Published: IEEE 2019-01-01
• Series: IEEE Access
• Subjects: Cyber-physical control systems; industrial control systems; secure control; sensor attacks mitigation
• Online Access: https://ieeexplore.ieee.org/document/8758093/

This paper describes how to design and implement a mechanism that helps to mitigate sensor attacks on industrial control systems. The proposed architecture is based on concepts from fault-tolerant control techniques. This short note explains how a Kalman filter can be used simultaneously with optimal disturbance decoupling observers to improve the performance of the mitigation mechanism for sensor attacks in cyber-physical control systems. Our proposal mitigates attacks by generating a signal that compensates the change provoked by the attacker, while at the same time reducing the number of false alarms. We demonstrate the effectiveness of our proposal using a three tanks control simulation.