Browsing by Author "Qian, Chunjiang"

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Global Output Feedback Stabilization of a Class of Nonlinear Systems With Unknown Measurement Sensitivity
(2018-07-01)
Chen, Chih-Chiang
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Qian, Chunjiang
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Sun, Zong-Yao
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Liang, Yew-Wen
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電控工程研究所
This note investigates the problem of global output feedback stabilization for a class of nonlinear systems with unknown measurement sensitivity. A new design method, namely dual-domination approach, is proposed to explicitly construct a state observer as well as an output feedback control law, which globally asymptotically stabilizes the nonlinear systems. The novelty of this note owes to a distinct perspective in coping with unknown measurement sensitivity which has previously been a hurdle to solve the global output feedback stabilization problem of the nonlinear systems.
Interval homogeneous domination approach for global stabilization of nonlinear systems with time-varying powers
(2016-01-01)
Chen, Chih-Chiang
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Qian, Chunjiang
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Liang, Yew-Wen
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Li, Shihua
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電控工程研究所
This paper considers the problem of global stabilization for a class of nonlinear systems with time-varying powers. A new design method based on the technique of adding a power integrator and the interval homogeneous domination approach, which can be thought as an evolution of the homogeneous domination approach, is developed to explicitly construct a smooth state feedback globally stabilizing controller. The novelty of this paper is the development of a systematic scheme, which provides us a new perspective to deal with the state feedback control problem for the nonlinear systems with time varying powers.
Smooth output feedback stabilization for a class of nonlinear systems with time-varying powers
(2017-12-01)
Chen, Chih-Chiang
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Qian, Chunjiang
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Lin, Xiangze
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Sun, Zong-Yao
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Liang, Yew-Wen
This paper investigates the global asymptotic stabilization problem for a class of nonlinear systems with time-varying powers. First, adding a power integrator technique is revamped to design a smooth state feedback controller, which is implementable with only upper and lower bounds of the time-varying powers. When the system state is not fully available and the time-varying power is exactly known, a smooth output feedback controller constituted by a state feedback and a nonlinear state observer is constructed to globally stabilize the system. Copyright (c) 2017 John Wiley & Sons, Ltd.
Smooth output feedback stabilization for nonlinear systems with time-varying powers
(2016-01-01)
Chen, Chih-Chiang
;
Qian, Chunjiang
;
Lin, Xiangze
;
Liang, Yew-Wen
;
電控工程研究所
This paper considers the global asymptotic stabilization problem for a class of nonlinear systems with time-varying powers. With only upper and lower bounds of the time-varying power, a smooth state feedback control law solving the problem is frst developed via the so-called adding a power integrator technique. When the system state is not fully available and the time-varying power is exactly known, a smooth output feedback control law constituted by a nonlinear state observer and a state feedback is constructed for achieving the stabilization task. In both cases, systematic approaches are explicitly presented for designing gains of control law and observer. (C) 2016, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.
Smooth output feedback stabilization of a class of planar switched nonlinear systems under arbitrary switchings
(2017-08-01)
Lin, Xiangze
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Chen, Chih-Chiang
;
Qian, Chunjiang
;
電控工程研究所
;
Institute of Electrical and Control Engineering
Smooth output feedback stabilization problem for a family of planar switched nonlinear systems is addressed. First, based on the adding a power integrator technique, the tasks of finding a common Lyapunov function and designing state feedback stabilizing control laws are accomplished simultaneously. Then, combining the state feedback control laws and the reduced-order nonlinear observers, output feedback control laws are designed to globally stabilize the switched nonlinear system under arbitrary switchings, whose subsystems may have uncontrollable/unobservable Jacobian linearizations. (C) 2017 Elsevier Ltd. All rights reserved.