Global finite‐time stabilization of a class of perturbed planar systems with actuator saturation and disturbances

2021 ◽  
Author(s):  
Yuxin Su ◽  
Chunhong Zheng ◽  
Paolo Mercorelli
Keyword(s):  
Finite Time ◽  
Actuator Saturation ◽  
Planar Systems ◽  
Finite Time Stabilization

Saturated output feedback control for finite-time attitude stabilization of spacecraft

2020 ◽  
Vol 234 (23) ◽  
pp. 4557-4571
Author(s):  
Yuquan Xia ◽  
Yuxin Su
Keyword(s):  
Output Feedback ◽  
Finite Time ◽  
Actuator Saturation ◽  
A Priori ◽  
Output Feedback Control ◽  
Lyapunov Stability Theory ◽  
Attitude Stabilization ◽  
Homogeneous Method ◽  
Finite Time Stabilization ◽  
Attitude Measurements

The finite-time attitude stabilization of spacecraft subject to actuator constraints and attitude measurements only is investigated. A saturated output feedback finite-time proportional-derivative control is proposed. Lyapunov stability theory and homogeneous method are employed to show the finite-time stabilization. Advantages of the proposed control include the finite-time stabilization featuring faster transient and higher precision and the absence of the modelling information and the velocity measurements in the control law formulation, and thus, it offers an easy-going solution for high-quality motion control of spacecraft. An additive feature is that the actuator saturation will not be reached by selecting the control gains a priori. Simulations are presented to illustrate the effectiveness of the proposed control.

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