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首页> 外文期刊>Automatic Control, IEEE Transactions on >State and Unknown Input Observers for Nonlinear Systems With Bounded Exogenous Inputs
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State and Unknown Input Observers for Nonlinear Systems With Bounded Exogenous Inputs

机译：有界输入的非线性系统的状态和未知输入观测器

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摘要

A systematic design methodology for state observers for a large class of nonlinear systems with bounded exogenous inputs (disturbance inputs and sensor noise) is proposed. The nonlinearities under consideration are characterized by an incremental quadratic constraint parameterized by a set of multiplier matrices. Linear matrix inequalities are developed to construct observer gains, which ensure that a performance output based on the state estimation error satisfies a prescribed degree of accuracy. Furthermore, conditions guaranteeing estimation of the unknown inputs to arbitrary degrees of accuracy are provided. The proposed scheme is illustrated with a numerical example, which does not satisfy the so-called “matching conditions.”
机译：提出了一种用于系统的状态观测器的系统设计方法，该系统用于具有大量外源输入（干扰输入和传感器噪声）的非线性系统。所考虑的非线性特征是由一组乘数矩阵参数化的增量二次约束。线性矩阵不等式被开发来构造观察者增益，从而确保基于状态估计误差的性能输出满足规定的准确度。此外，提供了保证将未知输入估计为任意精度的条件。所提出的方案以不满足所谓“匹配条件”的数值示例进行说明。

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