Appointed-time tracking control for uncertain nonstrict-feedback nonlinear systems with output constraint

A novel appointed-time adaptive tracking control scheme is proposed for a class of uncertain nonstrict-feedback nonlinear systems with output constraint. First, a modified nonlinear state transformation is constructed to guarantee the output constraint. And desired tracking performance of the actual...

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Bibliographic Details
Main Authors: Li, Yajun, Wang, Gen, Miao, Haochun, Li, Jinping
Format: Conference Proceeding
Language:English
Subjects:
Actuators
Adaptive systems
appointed-time tracking control
Backstepping
Control design
modified nonlinear state transformation
Nonlinear dynamical systems
Nonstrict-feedback systems
output constraint
Quantization (signal)
shifting error transformation
Time-varying systems
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Summary:A novel appointed-time adaptive tracking control scheme is proposed for a class of uncertain nonstrict-feedback nonlinear systems with output constraint. First, a modified nonlinear state transformation is constructed to guarantee the output constraint. And desired tracking performance of the actual output can be obtained by directly manipulating the output tracking error of the transformed system. Then, a new shifting error transformation is introduced in the control design to ensure that the tracking error converges into a pregiven interval in appointed time even when the initial tracking condition is unknown. Backstepping technique, dynamic surface control method as well as fuzzy approximators are applied to formulated the adaptive controller, and the stability of the proposed control scheme is theoretically proved, and the effectiveness is numerically validated.
ISSN:1948-9447
DOI:10.1109/CCDC55256.2022.10034063