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Observer Design for Unknown Input Nonlinear Descriptor Systems via Convex Optimization

机译:通过凸优化设计未知输入非线性描述符系统的观测器设计

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摘要

This paper treats the design problem of full-order observers for nonlinear descriptor systems with unknown input (UI). Depending on the available knowledge on the UI dynamics, two cases are considered. First, a UI proportional observer (UIPO) is proposed when the spectral domain of the UI is unknown. Second, a PIO is proposed when the spectral domain of the UI is in the low frequency range. Sufficient conditions for the existence and stability of such observers are given and proved. Based on the linear matrix inequality (LMI) approach, an algorithm is presented to compute the observer gain matrix that achieves the asymptotic stability objective. An example is included to illustrate the method.
机译:本文讨论具有未知输入(UI)的非线性描述符系统的全阶观测器的设计问题。根据有关UI动态的可用知识,考虑两种情况。首先,当UI的光谱域未知时,提出了UI比例观察器(UIPO)。其次,当UI的频谱域在低频范围内时,建议使用PIO。给出并证明了这些观测器存在和稳定的充分条件。基于线性矩阵不等式(LMI)方法,提出了一种算法来计算观测器增益矩阵,以达到渐近稳定的目的。包含一个示例来说明该方法。

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