It is well recognized that an adaptive output feedback control based on almost strictly positive real-ness (ASPR) or output feedback strictly passivity (OFSP) property of the system has strong robustness with respect to disturbances and uncertainty. However, most practical systems do not have such properties. In order to realize an augmented ASPR system for designing adaptive output feedback controller, a kind of adaptive parallel feedforward compensator (PFC) design schemes have been proposed for linear systems. In this paper, we propose an adaptive PFC design scheme by Kernel method for nonlinear systems and provide output feedback passivity based adaptive output feedback control for nonlinear systems. The effectiveness of the proposed method will be confirmed through numerical simulations. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

中文翻译：

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具有自适应并行前馈补偿器和通过核方法的前馈输入的非线性系统自适应输出反馈控制设计

众所周知，基于系统几乎严格正实性（ASPR）或输出反馈严格被动（OFSP）属性的自适应输出反馈控制对于干扰和不确定性具有很强的鲁棒性。然而，大多数实际系统都没有这样的特性。为了实现用于设计自适应输出反馈控制器的增强 ASPR 系统，已经提出了一种用于线性系统的自适应并行前馈补偿器 (PFC) 设计方案。在本文中，我们提出了一种基于核方法的非线性系统自适应 PFC 设计方案，并为非线性系统提供基于输出反馈无源性的自适应输出反馈控制。所提出方法的有效性将通过数值模拟得到证实。© 2021 日本电气工程师学会。