Mitigating Sensor Attacks Against Industrial Control Systems
- Author(s): Cómbita, LF;
- Cárdenas, Á;
- Quijano, N
- et al.
Published Web Locationhttps://doi.org/10.1109/ACCESS.2019.2927484
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.