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arXiv 1310.2575math.OC
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具有线性估计误差动力学的线性李群上的局部观测器

Local observers on linear Lie groups with linear estimation error dynamics

Mikhail Koldychev, Christopher Nielsen

摘要:

本文提出了线性李群上系统的局部指数观测器。我们研究两类不同的系统。在第一类中,系统的全态在线性李群上演化,并且可用于测量。在第二类中,只有部分系统的状态在线性李群上演化,并且这部分状态可用于测量。在每种情况下,我们提出了两种不同的观察者设计。我们表明,根据所选择的观察员,局部指数稳定的两个观测误差动态,左或右不变的误差动态,得到。对于第一类系统,这些结果的发展表明,估计误差动态微分等价于一个稳定的线性微分方程的向量空间。对于第二类系统,估计误差动态几乎是线性的。我们说明了这些观测器的设计上的姿态估计问题。

英文摘要:

This paper proposes local exponential observers for systems on linear Lie groups. We study two different classes of systems. In the first class, the full state of the system evolves on a linear Lie group and is available for measurement. In the second class, only part of the system's state evolves on a linear Lie group and this portion of the state is available for measurement. In each case, we propose two different observer designs. We show that, depending on the observer chosen, local exponential stability of one of the two observation error dynamics, left- or right-invariant error dynamics, is obtained. For the first class of systems these results are developed by showing that the estimation error dynamics are differentially equivalent to a stable linear differential equation on a vector space. For the second class of system, the estimation error dynamics are almost linear. We illustrate these observer designs on an attitude estimation problem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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