Design of linear unknown input observers for sensor fault estimation in nonlinear systems
Design of linear unknown input observers for sensor fault estimation in nonlinear systems
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DOI：
10.1016/j.automatica.2023.111152
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发表时间：
2023-07
期刊：
影响因子：
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通讯作者：
Sunjeev Venkateswaran;C. Kravaris
中科院分区：
文献类型：
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作者：
Sunjeev Venkateswaran;C. Kravaris
针对非线性系统中传感器故障估计问题，提出了一种线性未知输入观测器（UIO）设计的系统方法。给出了非线性系统存在线性UIO的充分必要条件。只要这些条件得到满足，我们得到明确的设计公式的观察员。该方法适用于非等温化学反应器（CSTR）的浓度传感器故障。
A systematic method for the design of linear unknown input observers (UIO) for sensor fault estimation in nonlinear systems is developed. Necessary and sufficient conditions for the existence of linear UIOs for nonlinear systems are derived. As long as these conditions are satisfied, we obtain explicit design formulas for the observer. The method is applied to a non-isothermal chemical reactor (CSTR) subject to a concentration sensor fault.