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Approach to the design of robust networked control systems

100%
Morawski M., Zajączkowski A.
International Journal of Applied Mathematics and Computer Science
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2010
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tom 20
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nr 4
689-698
EN
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.
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Fault diagnosis in a networked control system under communication constraints: a quadrotor application

100%
Chabir K., Sid M., Sauter D.
International Journal of Applied Mathematics and Computer Science
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2014
|
tom 24
|
nr 4
809-820
EN
This paper considers the problem of attitude sensor fault diagnosis in a quadrotor helicopter. The proposed approach is composed of two stages. The first one is the modelling of the system attitude dynamics taking into account the induced communication constraints. Then a robust fault detection and evaluation scheme is proposed using a post-filter designed under a particular design objective. This approach is compared with previous results based on the standard Kalman filter and gives better results for sensor fault diagnosis.
3
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Fault diagnosis of networked control systems

75%
Aubrun C., Sauter D., Yamé J.
International Journal of Applied Mathematics and Computer Science
|
2008
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tom 18
|
nr 4
525-537
EN
Networked Control Systems (NCSs) deal with feedback control systems with loops closed via data communication networks. Control over a network has many advantages compared with traditionally controlled systems, such as a lower implementation cost, reduced wiring, simpler installation and maintenance and higher reliability. Nevertheless, the networkinduced delay, packet dropout, asynchronous behavior and other specificities of networks will degrade the performance of closed-loop systems. In this context, it is necessary to develop a new theory for systems that operate in a distributed and asynchronous environment. Research on Fault Detection and Isolation (FDI) for NCSs has received increasing attention in recent years. This paper reviews the state of the art in this topic.
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