Neuroadaptive prescribed-time secure control for nonlinear interconnected NCSs via multiple triggering against DoS attacks

For a class of nonlinear networked control systems (NCSs) with denial-of-service (DoS) attacks, this article explores the problem of secure prescribed-time tracking control ground on multiple event-triggered mechanisms. First, a nonlinear observer is constructed using triggered output information to compensate for faults and mismatched disturbances. An integrated event-observer-based secure control scheme is then proposed to implement multiple triggering to resist DoS attacks on both measurement and control channels by designing multiple event-triggering mechanisms. Meanwhile, it bypasses the non-differentiability of the virtual controllers arising from the discontinuity in output-triggering. Moreover, we perform nonlinear scaling of tracking error to realize the desired transient performance of tracking with a prescribed accuracy within a finite time interval. Finally, simulation results are given to verify the effectiveness of the theoretical results.