A comparative investigation between memory-based and discrete event-triggered scheme in networked control systems

The performance of networked control systems (NCSs) is often critically dependent on communication resources such as network bandwidth, nodes energy and so on. Although in recent years, different event-triggered schemes (ETSs) have been developed to tackle these problems, the detailed comparative performance investigation of these ETSs have received few attention. The present study, therefore, carries out a detailed investigation on the performance of two recently developed ETSs, the memory-based event-triggered scheme (METS) and the discrete event-triggered scheme (DETS), considering nonlinear systems with time-varying delays and uncertainties. Further, the design procedure of the networked control system with these two ETSs is presented. Simulations are carried out considering an example of synchronization between two inertial neural networks. The results of the investigation demonstrate that the control performance of METS is better when the system is subjected to severe delays. However, the DETS performs better from the perspective of saving network resources.