Resilient-Based and Attack-Intensity Event-Triggered Protocol for Active Quarter-Vehicle Suspension Systems Under DoS Attacks

It is challenging to ensure car driving comfort and safety under denial-of-service (DoS) jamming attacks. For this reason, this article proposes a resilient-based and attack-intensity adaptive event-triggered control scheme to study the
$\mathcal {H}_{\infty }$
controlled networked active quarter-vehicle suspension systems (QVSSs), which reduces the frequency of controller updates and provides robust resistance to DoS attacks. It is shown that if the tendency of DoS attack intensity increases, more communication signals can be transmitted to the controller. Conversely, if the tendency of DoS attack intensity decreases, fewer communication signals are being utilized. Using the novel two-side looped-functional method and some technical lemmas, sufficient conditions for the exponential stability and
$\mathcal {H}_{\infty }$
control performance of QVSSs are obtained. Simulation results indicate that the suggested control approach enhances driving comfort and safety while reducing the data transmission burden.