Data-Driven Resilient Predictive Control Under Denial-of-Service
Wenjie Liu, Jian Sun, Gang Wang, Francesco Bullo, Jie Chen
Abstract
The study of resilient control of linear time-invariant (LTI) systems against denial-of-service (DoS) attacks is gaining popularity in emerging cyber-physical applications. In previous works, explicit system models are required to design a predictor-based resilient controller. These models can be either given a priori or obtained through <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">a prior</i> system identification step. Recent research efforts have focused on data-driven control based on precollected input–output trajectories (i.e., without explicit system models). In this article, we take an initial step toward data-driven stabilization of LTI systems under DoS attacks, and develop a resilient model predictive control scheme driven purely by data-dependent conditions. The proposed data-driven control method achieves the same level of resilience as the model-based control method. For example, local input-to-state stability (ISS) is achieved under mild assumptions on the noise and the DoS attacks. To recover global ISS, two modifications are further suggested at the price of reduced resilience against DoS attacks or increased computational complexity. Finally, a numerical example is given to validate the effectiveness of the proposed control method.