ABSTRACT This paper is devoted to the global output-feedback stabilisation for a class of nonlinear systems with inherent nonlinearities and coarse disturbance. Remarkably, the disturbance may be non-periodic, non-differentiable and/or of unknown magnitude, and hence some critical requirements on the disturbance in the existing related literature are successfully removed. Recognising that the strategies of disturbance compensation, such as internal model principle, sliding mode control method, learning method and active disturbance rejection control method, are quite hard or even impossible to apply, a time-varying design scheme is developed in the paper. Moreover, the serious unknowns and time-variations reflected in the growth rate of the system are also dealt with by the proposed scheme. By designing a time-varying output-feedback controller, all the signals of the resulting closed-loop system are globally bounded, and the original system state and the observer state ultimately converge to zero.

中文翻译：

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通过时变输出反馈对具有固有非线性和粗扰的系统进行全局稳定

摘要 本文致力于一类具有固有非线性和粗扰的非线性系统的全局输出反馈稳定。值得注意的是，扰动可能是非周期性的、不可微的和/或未知量级的，因此成功去除了现有相关文献中对扰动的一些关键要求。考虑到扰动补偿策略，如内模原理、滑模控制方法、学习方法和自抗扰控制方法很难甚至不可能应用，本文开发了一种时变设计方案。此外，所提出的方案还处理了反映在系统增长率中的严重未知数和时间变化。通过设计时变输出反馈控制器，