Semi‐global output feedback control for nonlinear systems with uncertain time‐delay and output function

Abstract

This paper considers semi-global output feedback control for more general nonlinear systems with unknown time-delay and output function whose derivative is unbounded from above. By introducing a new observer and using the backstepping design method and the Razumikhin stability theorem, an output feedback controller is constructed to achieve a semi-global stability.

Global Output Feedback Stabilization for a Class of Nonlinear Cascade Systems

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Stability Analysis of Solutions for a Kind of Integro-Differential Equations with a Delay

“…Stability and the existence of solutions for nonlinear differential equations have been studied by many scholars [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] due to their many applications to problems in information theory, control theory, mechanics, chemistry, physics, and so on. In [5], the authors considered a second-order functional integro-differential equation with multiple delays …”

Disturbance Observer-Based Backstepping Control of PMSM for the Mine Traction Electric Locomotive

“…The disturbance observer does not need to establish accurate mathematical model for the disturbance signal [10]. Recently, disturbance observer-based (DOB) control methods have been applied to PMSM system for better robustness against system disturbance [11].…”