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Global Output Feedback Stabilization for Stochastic Nonlinear Systems with Multiple Uncertainties
Yanghe Cao,Junsheng Zhao,Zong-yao Sun 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.7
This manuscript addresses the problem of output feedback stabilization for stochastic nonlinear zerodynamics systems with multiple uncertainties. A distinctive feature of the systems is the dynamic/parametric uncertainties, the stochastic and the unknown continuous output function disturbances, which have not been considered together yet. Then an output-feedback stabilizer and an observer are designed, where a dynamic gain is carried out to address the unknown nonlinearities and a constant gain is carried out to address unknown measurement sensitivity. The controller makes sure that the equilibrium at the origin of the closed-loop systems that have an almost surely unique solution is stochastic stable in probability. Finally, a simulation example is presented to illustrate the efficiency of the designed controller.