Abstract:

To address the problem of cyber-attacks in the process of intercepting maneuvering targets by missiles， a class of adaptive event-triggered guidance method is studied. Firstly， as the system suffering from malicious cyber attacks， the system states cannot be accurately measured. Based on the backstepping technology， the corresponding error dynamic surfaces are established for the real state of the original system and the false state after the attack， respectively. Secondly， the multiple Nussbaum functions are employed to overcome the unknown control direction caused by cyber attacks. Then， since the traditional time-triggering mechanism will cause the waste of computing resources， the event-triggering mechanism is introduced to alleviate the computational burden. Further， the triggering condition is given， and a class of adaptive event-triggered control strategy is proposed. The stability of the closed-loop system is proved to be bounded according to the Lyapunov theory. Finally， the simulation results verify the proposed method can handle cyber attacks and intercept successfully the target with different maneuvering modes.

Key words: missile intercept, cyber-attack, unknown control direction, adaptive control, event-triggered