7706

7178

كارشناسي ارشد

كنترل

اصفهان: دانشگاه صنعتي اصفهان، دانشكده برق و كامپيوتر

1391

نه،86ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

جعفر قيصري، مسعودرضا هاشمي

محسن اكراميان

22/2/92

مهندسي برق و كامپيوتر

ID7178

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Modeling Stability Analysis and Controller Design for Wireless Sensor ActuatorNetworked based on IEEE 802 15 4Ahmadreza Tavasolia tavasoli@ec iut ac irDate of Submission 2012 7 17Department of Electrical and Computer EngineeringIsfahan University of Technology Isfahan 84156 83111 IranDegree M ScLanguage FarsiSupervisor J Ghaisari ghaisari@cc iut ac irM Hashemi hashemim@cc iut ac irAdvisor M Ekramian ekramian@ec iut ac ir Abstract Recent advances in sensing technology and networked communication are leading to the emergence ofWireless sensor networks WSNs They have greatly facilitated and enhanced the automated remote andintelligent monitoring of a large variety of physical systems Recently wireless network application has beenextended to Wireless Sensor Actuator Network WSAN to control processes with Real Time loop A WSAN isa distributed system of sensors and actuators that are connected over wireless links Decrease in wiring costs facility in installing and maintenance increase in scalability and possibility of controlling geographicallydistributed systems are some of important advantages of these systems Although they are facing with someserious challenges such as delays packet loss in transferring data and packet congestion in networks In this thesis modeling stability analysis problem and real time controller design using WSAN are addressed IEEE 802 15 4 as most appropriate protocol is considered for networks communication In the first step thetransmission algorithm of IEEE 802 15 4 has been studied and using the results of this wireless networkedcontrol system has been modeled in presence of delay and pocket loss in the both network between sensors andcontroller and network between controller and actuators Then with construction of an appropriate Lyapunov Krasovskii functional sufficient condition for mean square asymptotically stability of the closed loop wirelessnetworked control systems is derived and based on this a feedback controller design procedure is proposed forstabilization purpose In order to compensate adverse effects of non idealities of communication network insensors and controller connection the use of an estimator is proposed and the estimation algorithm is presented The estimator is formulated as a Time dependent Impulsive System Then by using these models sufficientcondition for mean square asymptotically stability analysis of closed loop system and estimator is proposed Finally in order to increase freedom to compensate the communication constraints a switching controller isdesigned where the feedback gains change with respect to different network conditions For this purpose sufficient condition based on Linear Matrix Inequality for mean square asymptotically stability of Wirelessnetwork control systems has been suggested Key Words Wireless Sensor Actuator Network WSAN Networked Control System NCS mean squareasymptotically stability protocol of IEEE 802 15 4 Lyapunov Krasovskii functional Linear Matrix Inequality Compensate Delay and Packet Loss

جعفر قيصري، مسعودرضا هاشمي

محسن اكراميان