Adaptive state observer design of nonlinear differential-algebraic systems

被引：1

作者：

Xu F. ^{[1
]}

Guan J. ^{[1
]}

Luo X.-L. ^{[1
]}

机构：

[1] Inst. of Automation, China Univ. of Petroleum

来源：

Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2010年 / 32卷 / 11期

关键词：

Adaptive; Differential-algebraic equation; Nonlinear system; Process control; State observer;

D O I：

10.3969/j.issn.1001-506X.2010.11.40

中图分类号：

学科分类号：

摘要：

For nonlinear differential-algebraic systems, a state observability criterion is presented, and a design method of adaptive state observer is proposed. A desired feedback gain matrix is achieved by allocating the observer poles on-line based on the current operating point of the state observer to ensure that the observers can run in a wide range. The robustness of the observer is also analyzed when the modeling errors exist, and it is proved that if the model has no steady errors the observer will also have no steady errors. The simulation of the typical differential-algebraic system in chemical process shows that the observed state can converge to the real value and the proposed observer has a good dynamic performance.

引用

页码：2442 / 2446

页数：4

共 15 条

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