非線性不確定時(shí)滯系統(tǒng)的魯棒容錯控制研究及應(yīng)用
[Abstract]:With the development of science and technology, many scholars have paid close attention to the control problem of nonlinear uncertain time-delay systems. They have made rich theoretical achievements in system stability analysis and controller design, and obtained extensive practical applications. In this paper, robust fault-tolerant control for nonlinear uncertain time-delay systems is studied, and the theoretical results are applied to the control of tilting rotorcraft. The main contents are as follows: firstly, the basic knowledge including fault-tolerant control, robust control, Lyapunov stability theory, state feedback and linear matrix inequality theory is introduced. Secondly, for a class of nonlinear time-delay systems with parameter uncertainty, the robust fault-tolerant control problem is studied based on Lyapunov stability theory. When the sensors and actuators fail, the sufficient conditions for the asymptotic stability of the closed-loop systems are given by using the linear matrix inequality (LMI) method, respectively, and the design methods of the corresponding controllers are given. Numerical examples show the validity of the conclusions. Finally, aiming at the lateral flight control system of tilting rotor, based on Lyapunov stability theory, the linear matrix inequality (LMI) (LMI) method is used to design the system when the sensor and actuator fail, respectively, when the system has parameter uncertainty. The closed-loop system is still asymptotically stable and the corresponding robust fault-tolerant controller makes the flight control system robust. A simulation example shows the feasibility of the proposed scheme.
【學(xué)位授予單位】:南京航空航天大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:O175
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