一类含输入时滞非线性系统的干扰观测器控制

文新宇

doi:10.3724/SP.J.1004.2014.01882

一类含输入时滞非线性系统的干扰观测器控制

doi: 10.3724/SP.J.1004.2014.01882

文新宇

1.
太原科技大学电子信息工程学院太原 030024

基金项目:

国家自然科学基金（61203049），太原科技大学校博士启动资金（20122048），山西省高校科技研究开发项目（20121068）资助

详细信息

作者简介:
文新宇太原科技大学副教授.主要研究方向为干扰估计和抗干扰控制.E-mail：wxysunrain@163.com

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出版历程
- 收稿日期: 2013-07-18
- 修回日期: 2013-09-29
- 刊出日期: 2014-09-20

Disturbance Observer Based Control for a Class of Nonlinear Systems with Input Time-delay

WEN Xin-Yu

1.
School of Electronic Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024

Funds:

Supported by National Natural Science Foundation of China (61203049), Taiyuan University of Science and Technology Doctor Priming Foundation (20122048), and Research Development Program of Science and Technology of Higher Education of Shanxi Province(20121068)

摘要

摘要: 基于干扰观测器控制（Disturbance-observer-based control，DOBC）作为一种有效的干扰补偿策略取得了广泛的应用. 然而，当干扰和控制输入不能在同一时刻进入控制通道时，外部信号很难得到实时估计和补偿.提出一种复合DOBC结构，包括干扰观测、干扰预测和反馈调节三个部分.该方法的特点是即使一类非线性系统存在输入时滞，同样可以继承传统DOBC的优点. 最后，通过构造辅助观测器给出了预测误差以及复合闭环系统的稳定性分析方法.
- 干扰观测器 /
- 干扰预测 /
- 辅助观测器 /
- 输入时滞
Abstract: Disturbance-observer-based control (DOBC) has been considered as an effective disturbance rejection scheme in applications. However, if the control input and disturbance cannot enter the control channel at the same time, it will be difficult to estimate and compensate the exogenous signals in real time. A compound DOBC method, consisting of a disturbance observer, disturbance prediction and a feedback regulation part, is thus developed. One novel feature of the proposed method is that the merits of DOBC can be inherited for a class of nonlinear systems with input time-delay. Moreover, stability analysis for both the dynamic prediction error system and the composite closed-loop system is provided by designing an auxiliary observer.
- Disturbances observer /
- disturbance prediction /
- auxiliary observer /
- input time-delay

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参考文献(16)

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