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The Study of Wireless Network Control System Transmission Model

Author: JiaLianLian
Tutor: ShenYongZeng
School: Zhejiang University of Technology
Course: Control Theory and Control Engineering
Keywords: truetime wireless network simulation model network delay mathematical model queuing theory with vacation
CLC: TN929.5
Type: Master's thesis
Year: 2011
Downloads: 66
Quote: 0
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Abstract


At present, because of the convenience of the wireless network applications, the convenience of the mesh and the maintenance, and the favorable expansibility, the applications of the wireless network are becoming more and more widely. In a lot of new network environment, the wireless network has become the first web choice form, particularly in the environment where application objects are mobile or difficult to connect using the wire network. The wireless network plays an irreplaceable function. The adequacy of the wireless network in control system has aroused many research workers’concern. Now, WlNCS has become a hot topic in control field.But the wireless network has some limitations of its own, for example: random delay and lost data packet, the communication interrupt, the time-variant channel gain and interference, the relatively small bandwidth and a higher error rate. One of the research key of WlNCS is to analysis its performance, to design a better controller. It is necessary to comprehend the characteristics of the communication channel. Now, the network applying in control system mainly is wired or immobile, rarely related to a lot of difficulties brought by node’s mobility, network topology’s dynamic variation and node’s random death as a result of energy drain.The main work and creative results of this text as follows:1. This text made use of the network simulation toolbox TrueTime under the Matlab/Simulink establishing an Ad Hoc network simulation model based on AODV routing.2. Analyzed the main network characteristics of this network, for example: network delay and lost data packet in different node travelling speed and sending rate.3. On the basis of analyzing AODV routing protocols and wireless network communication process, established wireless network delay mathematical model based on queuing theory with vacation.4. We use established network simulation model validating established network delay mathematical model correctly.

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