scholarly journals Further Results on Output Tracking Problem of Uncertain Nonlinear Systems with High-Order Nonlinearities

2016 ◽  
Vol 9 (1) ◽  
pp. 409-422 ◽  
Author(s):  
Keylan Alimhan ◽  
Naohisa Otsuka ◽  
Maksat N. Kalimoldayev
Keyword(s):  
Nonlinear Systems ◽  
High Order ◽  
Uncertain Nonlinear Systems ◽  
Tracking Problem ◽  
Output Tracking

scholarly journals Global Practical Output Tracking of Inherently Nonlinear Systems Using Continuously Differentiable Controllers

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Keylan Alimhan ◽  
Naohisa Otsuka ◽  
Abilmazhin A. Adamov ◽  
Maksat N. Kalimoldayev
Keyword(s):  
Nonlinear Systems ◽  
State Feedback ◽  
Uncertain Nonlinear Systems ◽  
Tracking Problem ◽  
Numerical Example ◽  
Output Tracking

This paper considers the global practical output tracking problem by at least continuously differentiable (C1) state feedback for a class of uncertain nonlinear systems whose linearization around the origin may contain uncontrollable modes. Based on utilizing the homogeneous domination approach, we not only propose conditions of constructing a global continuously differentiable (C1) controller, but also provide explicit design schemes for such systems. Finally, a numerical example demonstrates the effectiveness of the result.

Output tracking control of high-order nonlinear systems with dynamic uncertainties

2019 ◽  
Vol 42 (8) ◽  
pp. 1511-1520
Author(s):  
Zong-Yao Sun ◽  
Yu-Jie Gu ◽  
Qinghua Meng ◽  
Wei Sun ◽  
Zhen-Guo Liu
Keyword(s):  
Nonlinear Systems ◽  
Tracking Control ◽  
Tracking Error ◽  
High Order ◽  
Approximation Technique ◽  
Zero Dynamic ◽  
Adding A Power Integrator ◽  
Output Tracking ◽  
Output Tracking Control ◽  
Dynamic Uncertainties

This paper investigates the output tracking control problem for a class of nonlinear systems with zero dynamic. On the basis of adding a power integrator method and approximation technique, an appropriate controller is proposed to guarantee that the tracking error turns to a preassigned neighborhood of the origin. The systems under investigation allow unmeasurable dynamic uncertainties, unknown nonlinear functions and unknown high-order terms. As an application, two examples are provided to illustrate the effectiveness of a control strategy.

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