11568

10621

كارشناسي ارشد

كنترل

اصفهان: دانشگاه صنعتي اصفهان، دانشكده برق و كامپيوتر

1395

نه، 64ص.: مصور

جواد عسگري، مرضيه كمالي

فريد شيخ الاسلام، ايمان ايزدي

1395/07/26

مهندسي برق و كامپيوتر

ID10621

Adaptive integral sliding mode control for nonlinear systems with fault Seyyed Yaghoub Hosseini yaghoub hosseini@ec iut ac ir Date of Submission 2016 05 25 Department of Electrical And Computer Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language FarsiSupervisors M Kamali M Kamali@cc iut ac ir J Askari J Askari@cc iut ac irAdvisor Abstract Real systems are inherently nonlinear and system models have uncertainties Sliding mode controlwith its special properties and robustness against uncertainties is an appropriate method for designinga stable controller for nonlinear systems moreover adaptive control known as an efficient online wayto deal with uncertainties The main problem in the design of sliding mode controller is chattering To overcome the chattering problem in sliding mode controller different methods have provided Integral sliding mode control can effectively improve chattering So in order to overcome chatteringphenomena and increase convergence speed the adaptive integral sliding mode control is used forcontroller design On the other hand the occurrence of faults in control systems is inevitable that notonly reduces system performance but also it may cause instability in system Therefore design of acontroller which can be stable in the condition that fault occurred not only make it applicable in widerrange but also it looks necessary in systems like aerial systems nuclear and in which safety andsecurity are very important So adaptive sliding mode control is firstly designed for system withoutfault and then it is extended to Multi Input Multi Output MIMO system with fault For all thecontrollers being designed the system stability and the tracking error convergence to an acceptablesmall value is proved For the proposed method simulation is done and the results of simulationvalidate the effectiveness of proposed method Keywords Sliding mode control Adaptive control Fault tolerant control systems Integral slidingmode

جواد عسگري، مرضيه كمالي

فريد شيخ الاسلام، ايمان ايزدي