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Wireless communication presents the most attractive sign of development in this decades. It contributes to the appearance of Wireless Sensor Network (WSN) which is invented in order to increase the supervision capacity for such phenomenon. It gets more regard from both the customers and the research society. (WSNs) is composed from numerous wireless sensor nodes which suffer from a very serious energy...
In wireless communication, energy present very serious problem which could be easily affect the lifetime of all the network. The increasing of the wireless connected object lead to the appearance of a new notion which is the Internet of Thing. The growth of network size produce very important quantity of data as a result which request more quantity of energy to consume. The technology of the IEEE...
Nowadays the energy consumption has become a critical challenge in Wireless Sensor Network (WSN). Wireless connection suffer from some weaknesse chiefly fault detection and energy efficiency which stay again the main problems in (WSN). Both was under the scope of research communities and industry engineers. We are interested to the IEEE 802.15.4 standard with beacon enabled mode. IEEE802.15.4 is a...
Wireless sensor networks are gaining more and more attention these days. They gave us the chance of collecting data from noisy environment. So it becomes possible to obtain precise and continuous monitoring of different phenomenons. However wireless Sensor Network (WSN) is affected by many anomalies that occur due to software or hardware problems. So various protocols are developed in order to detect...
This work deals with the physical modeling of the phosphoric unit in the Tunisian Chemical Group (TCG). The process is consisting of a continuous reactor and a rotary filter. This study focuses on the different physical laws involved in the filtration step and the attack step combined with different actuators models in order to get a simulator of the global process. In control, this system is Multiple...
Wireless Sensor Networks (WSN) can experience faults during deployment either due to its hardware malfunctioning or software failure or even harsh environmental factors. This results into presence of anomalies in their time-series collected data. So, these anomalies demand for reliable detection strategies to support in long term and/or in large scale WSN deployments. These data of physical variables...
This work deals with the modeling of a chemical reactor on the Chemical Tunisian Group (CTG) factory of “Skhira” based on physical equations. Diversification of phosphate quality has a great effect on the viscosity of the slurry and hence on the level of the reactor, which brings us to model the system to make the appropriate tests. Modeling the tank attack is mainly based on physical laws as well...
Wireless Sensor Networks (WSNs) have been a significant system considerably exploited in numerous fields including medical, environmental, military and household applications. Yet, its high energy consumption and its potential fault vulnerability still their major drawback. Both of these issues require the implementation of fault distributed detection methods, capable of distinguishing faulty nodes...
This work was done in Tunisian Chemical Group (TCG) factory Skhira producing phosphoric acid. It involves studying the filtration of slurry of phosphoric acid manufacture in second stage. This study will focus on the physical modeling of filtration phase and the setpoint is optimization under constraints which takes into account the different functional requirements of the system. The optimized parameters...
Wireless Sensor Networks (WSNs) have become an information collection and monitoring solution for a variety of applications. Faults occurring to sensor nodes are common due to the sensor device itself and the harsh environment where the sensor nodes are deployed. As one of the key technologies involved in WSNs, node fault detection is indispensable in most WSN applications. In this paper, a new approach...
The fault diagnosis and prediction of electrical machines and drives has become of importance because of its great influence on the operational continuation of many industrial processes. Correct diagnosis and early detection of incipient faults avoids harmful, sometimes devastative, consequences. In this work, on the basis of a model of an induction motor, we study the detection of broken rotor bars...
Stability of nonlinear systems is a problem of fundamental importance in system engineering. Specifically, the computation of a Lyapunov function which presents one of the tools for study the stability of nonlinear systems. The objective of this work is to study the Lyapunov approaches of polynomial systems. These approaches have been investigated in order to develop numerical algorithms based on...
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