Cyber-security of centralized, decentralized, and distributed control-detector architectures for nonlinear processes

Comparing Centralized and Distributed Architectures

Comparing Centralized and Decentralized Distributed Execution Systems

We implement two distributed execution systems one centralized and one decentralized. We test these systems in terms of how well they handle a high number of requests, distribute execution, and tolerate heterogeneity. Given the small size and homogeneity of our lab environment we find that the centralized system provides a much simpler yet equally effective alternative to the decentralized syst...

Distributed Nonlinear Robust Control for Power Flow in Islanded Microgrids

In this paper, a robust local controller has been designed to balance the power for distributed energy resources (DERs) in an islanded microgrid. Three different DER types are considered in this study; photovoltaic systems, battery energy storage systems, and synchronous generators. Since DER dynamics are nonlinear and uncertain, which may destabilize the power system or decrease the performanc...

Distributed nonlinear control of diffusion–reaction processes

In this work, we focus on distributed control of quasi-linear parabolic partial differential equations (PDEs) and address the problem of enforcing a prespecified spatio-temporal behaviour in the closed-loop system using nonlinear feedback control and a sufficiently large number of actuators and sensors. Under the assumption that the desired spatio-temporal behaviour is described by a ‘target pa...

Centralized and Distributed Architectures for Multimedia Presentational Applications

In this paper, we present a complete software control architecture for synchronizing multiple data streams generated from distributed media-storing database servers without the use of a global clock. Independent network connections are set up to remote workstations for multimedia presentations. Based on the document scenario and traffic predictions, stream delivery scheduling is performed in ei...