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Two Types Of Controller Design And Analysis Of Complex Systems

Posted on:2013-06-10Degree:MasterType:Thesis
Country:ChinaCandidate:C R ZhaoFull Text:PDF
GTID:2248330371992375Subject:Operational Research and Cybernetics
Abstract/Summary:PDF Full Text Request
In this paper, we consider the design and analysis of controller for two kinds of complexsystems. The main contributions include:1. The first chapter investigates output-feedback regulation for more general nonlinearsystems with integral input-to-state stability (iISS) inverse dynamics and unknown controldirection. By using the adaptive backstepping method, an output feedback controller isgiven to drive the output to the origin while maintaining other closed-loop signals bounded.2. The second chapter investigates more general high-order stochastic nonlinear systemdriven by noise of unknown covariance and its adaptive state-feedback stabilization problem.By using the backstepping method, introducing a new scalar transformation and choosing anappropriate Lyapunov function, a smooth state-feedback controller is designed to guaranteethat the origin of the closed-loop system is globally stable in probability.
Keywords/Search Tags:Nonlinear systems, stochastic high-order nonlinear systems, integral input-to-state stability (iISS), inverse dynamics, unknown controldirection, state-feedback control, output-feedback control, unknown covari-ance
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