In this paper, an adaptive output feedback tracking for a class of uncertain nonlinear systems with input and output quantization is investigated. A new controller structure is introduced in which a modified output quantizer is proposed so that its first-order derivative exists, and an observer is designed with quantized input and output as its input signals. Then, with dynamic surface control as a tool, an adaptive recursive design is developed which can avoid higher-order derivatives of the quantized output signal. It is proved that, with the proposed scheme, coarser input and output quantization can be achieved and the tracking error can converge to a small residual set by appropriately choosing some design parameters.

中文翻译：

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一类具有量化输入和输出的非线性系统的自适应输出反馈跟踪

在本文中，研究了一类具有输入和输出量化的不确定非线性系统的自适应输出反馈跟踪。引入了一种新的控制器结构，其中提出了一种改进的输出量化器，使其一阶导数存在，并设计了一个以量化的输入和输出作为输入信号的观测器。然后，以动态表面控制为工具，开发了一种自适应递归设计，可以避免量化输出信号的高阶导数。It is proved that, with the proposed scheme, coarser input and output quantization can be achieved and the tracking error can converge to a small residual set by appropriately choosing some design parameters.