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An LMI-Based H_∞ Discrete-Time Nonlinear State Observer Design for an Anaerobic Digestion Model

机译:基于LMI的H_∞离散时间非线性状态观测器设计厌氧消化模型

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This paper is devoted to the design of an H_∞ discrete-time nonlinear state observer for an anaerobic digestion model. Indeed, the designed observer can be used for different class of systems, mainly linear systems, LPV systems with known and bounded parameters, and nonlinear Lipschitz systems. We use an LMI approach to guarantee the H_∞ asymptotic stability of the estimation error despite the disturbances affecting the system dynamics and measurements. The synthesised LMI is relaxed due to the inclusion of additional decision variables which enhance its feasibility. This was possible due to the use of a suitable reformulation of the Young's inequality. Simulation results are given to show the robustness of the designed observer.
机译:本文致力于设计Anaerobic消化模型的H_∞离散时间非线性状态观察者的设计。实际上,设计的观察者可用于不同类别的系统,主要是线性系统,具有已知和有界参数的LPV系统,以及非线性Lipschitz系统。我们使用LMI方法来保证估计误差的H_∞渐近稳定性,尽管有影响系统动力学和测量值。由于包含额外的决策变量而增强其可行性,因此宽松地放松了合成的LMI。由于使用适当的杨氏不平等,这是可能的。给出了模拟结果显示了设计观察者的鲁棒性。

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