A Novell Backstepping Nonlinear Controller Design for Nonlinear Vibration Systems

(整期优先)网络出版时间:2009-02-12
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Introducingbasicdesignmethodologyfordevelopingbacksteppingnonlinearcontrollerforvibrationcontrolsystem.Withasimplifiedsecond-ordersystemmodelofnonlinearvibrationsystem(Duffing’sequation),where,theprocesshasillustratedthebacksteppingdesignstep-by-step.Backsteppingisanovelnonlineardesigntool,whichisbasedonconstructingtheLyapunovfunctionfortheclosed-loopsystemsandguaranteesthestabilityandtrackingperformancethroughenergydissipation.Ingeneral,thisnonlinearcontroldesignapproachgeneratesaggressivecontrolefforttoreducethetrackingerrorpresentedinthiscontrolsystemandsignificantlyimprovethesystembandwidth.Theeffectivenessofthedesignschemeisshownthroughthecomputersimulation.