Dynamic Event-Triggered Model Predictive Control Under Channel Fading and Denial-of-Service Attacks

This article presents a model predictive control (MPC) design based on dynamic event-triggered mechanism (DETM). In the sensor-to-controller channel, the networks are unreliable in the sense that the transmitted signals may suffer from channel fading which is characterized by a stochastic process. In the controller-to-actuator network, the Denial-of-Service (DoS) attacks are taken into consideration whose dynamic behavior is described by a binary Markov process. Moreover, the external disturbance is considered. First, a DETM is employed to schedule the data transmission with the aim of reducing the communication burden. Then, an
$H_{\infty}$
-type cost function is applied in the MPC design to improve the system’s robustness against disturbance. Different from the conventional MPC, the novelty of developed MPC is that it can improve the communication efficiency and enhance the robustness against these network-induced issues simultaneously. At last, the validity and superiority of the proposed technique are demonstrated by simulation studies.
Note to Practitioners
—With the development of information technologies, the practical control systems are highly integrated with wireless networks. In such case, the network-induced issues are very important. For example, in the platooning control of automated vehicles, the conventional time-triggered control scheme leads to unnecessary waste of communication resource and thus heavy communication burden. Especially, this issue becomes particularly important when the number of vehicles increases. This article was motivated by this and it suggests a new control design based on DETM. Moreover, in control systems, it is necessary to utilize the state measurement to compute control signals. However, when the measured state information is affected by DoS attacks and channel fading, the system performance and even stability will be seriously damaged. Furthermore, the external disturbances widely exist in practical engineering. Considering the influence of these issues, this paper studies the design of MPC. The obtained results aim to provide a helpful reference for the controller design under various network-induced issues, involving bandwidth constraints, DoS attacks and channel fading. It is expected that the proposed MPC design can be applied to more practical engineering systems.