  Over the past decades, interest in enhancing the safety of cyber-physical
systems (CPSs) has risen. The systems and control research society has
recognised that the embedded closed-loop in integrated systems may be damaged
if attackers can execute a successful malicious attack. This article examines
the resilient control problem for CPSs with numerous transmission channels
under Denial-of-Service (DoS). First, a partial observer technique is developed
in response to the Multi-Channel DoS (MCDoS) condition. The changing frequency
of MCDoS is characterized while maintaining the Global Asymptotic Stability
(GAS) of the closed loop system. The partial observer is modified then to
reduce the effect of the changing frequency of MCDoS in the system. Then a
resilient event-based feedback control scheme is developed to address the
Full-Scale DoS (FSDoS). We depict the changing frequency of MCDoS and the
frequency and duration of FSDoS, allowing the feedback system's Global
Asymptotic Stability (GAS) to be maintained. We regard event-based controllers
for which a minimal inter-sample time is precisely formulated in response to
the existence of digital channels.
