ADRC is a modern, robust control strategy designed to handle system uncertainties and external disturbances without relying on an accurate mathematical model. It works by lumping all unknown dynamics and external effects into a “total disturbance,” which is continuously estimated in real time using an Extended State Observer (ESO). This disturbance estimate is then actively compensated through a simple state-feedback law, allowing the controller to maintain stability and performance even under harsh or unpredictable conditions. As a result, ADRC delivers strong disturbance rejection, fast dynamic response, and high reliability, making it an attractive solution for robotics, automation, power systems, and other real-world applications where precision and robustness are essential.

Protecting modern electrical grids from cyberattacks is essential as they can compromise both communication networks and physical infrastructure. We integrate observer based attack detection with resilient control design to identify and mitigate coordinated cyberattacks targeting sensors, actuators, and communication channels. By continuously monitoring system behavior and estimating system states, the observer detects abnormal conditions in real time, while the controller compensates for malicious attacks to maintain stable and reliable operation.