Global output feedback control of feedforward nonlinear time-delay systems with unknown growth rate and unknown measurement sensitivity  

作　　者：Weiyong Yu Keao Gao Hongbing Zhou Qiang Liu 

机构地区：[1]Academy of Artificial Intelligence,Beijing Institute of Petrochemical Technology,Beijing,102617,China [2]School of Mathematics and Statistics,Nanyang Normal University,Nanyang,473061,Henan,China

出　　处：《Control Theory and Technology》2024年第1期122-134,共13页控制理论与技术（英文版）

基　　金：supported by the fund of Beijing Municipal Commission of Education(Nos.22019821001 and KM202210017001);the Natural Science Foundation of Henan Province(No.222300420253).

摘　　要：This paper discusses the problem of global state regulation via output feedback for a class of feedforward nonlinear time-delay systems with unknown measurement sensitivity. Different from previous works, the nonlinear terms are dominated by upper triangular linear unmeasured (delayed) states multiplied by unknown growth rate. The unknown growth rate is composed of an unknown constant, a power function of output, and an input function. Furthermore, due to the measurement uncertainty of the system output, it is more difficult to solve this problem. It is proved that the presented output feedback controller can globally regulate all states of the nonlinear systems using the dynamic gain scaling technique and choosing the appropriate Lyapunov–Krasovskii functionals.

关 键 词：Adaptive control Dynamic gain controllers Feedforward time-delay systems Measurement sensitivity Output feedback 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]