Approach to the design of robust networked control systems

Abstract

The paper describes the application of the traffic engineering framework together with application layer procedures as mechanisms for the reduction of network latency lags. These mechanisms allow using standard and inexpensive hardware and software technologies typically applied for office networking as a means of realising networked control systems (NCSs) with high dynamic control plants, where a high dynamic control plant is the one that requires the sampling period several times shorter than communication lags induced by a network. The general discussion is illustrated by experimental results obtained in a laboratory NCS with the magnetic levitation system (MLS), which is an example of a structurally unstable plant of high dynamics.

Decentralized design of interconnected H∞ feedback control systems with quantized signals

“…In order to deal with higher control specifications for high speed sampled systems, dynamical quantizers are desired and more practical. Moreover, as also pointed out by Morawski and Zajączkowski (2010) as well as Bushnell (2001), the phenomena of packet dropouts, delays, etc., need to be dealt with in a unified manner, together with the approach proposed in this paper. Actually, the combination of quantizations and dropouts has been dealt with in several existing references (Ling and Lemmon, 2010), but the proposed control strategy there is not applicable directly to the problem formulated in this paper.…”

The optimization method for a kind of uncertain networked systems based on the stripping principle and optimal control

“…In recent years, with the advance of science and technology, especially the development of information technology, the control for networked systems has attracted increasing attention from many fields, such as communication engineering, public transportation, biology system, and social management, and so on, (see [1][2][3][4][5][6] and the references therein). And many interesting results have been established, for example, decentralized fixed modes, decentralized controller design, diagonal Lyapunov function method, M-matrix method, etc.…”

“…Because of the complexity of networked systems, the implementation of optimal control for those systems is under great challenges ( [4][5][6][7][8]). Although there have been some methods proposed, for example, the * This work is supported by the great basic research project of scientific foundation of Renmin University of China -"The study on some key techniques in social calculation".…”

Fault diagnosis in a networked control system under communication constraints: A quadrotor application

“…However, the introduction of communication networks in the control loops makes the analysis and synthesis of NCSs a highly complex task (Morawski and Zajączkowski, 2010). There are several network-induced effects that arise when dealing with the NCS, such as time-delays (Niculescu, 2001;Nilsson et al, 1998;Pan et al, 2006;Schöllig et al, 2007;Yi et al, 2007;Zhang et al, 2005), packet losses (Xiong and Lam, 2007;Sahebsara et al, 2007;Yu et al, 2004;Georges et al, 2011) and quantization problems (Goodwin et al, 2004;Montestruque and Antsaklis, 2007;Fang et al, 2007).…”