arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.05078math.OCmath.APmath.DG
收藏

具有对称性的控制系统的动态反馈线性化

Dynamic Feedback Linearization of Control Systems with Symmetry

Jeanne N. Clelland, Taylor J. Klotz, Peter J. Vassiliou

AI总结:

本文针对具有李群对称性的非线性时变控制系统,提出基于李对称性的几何框架,给出动态反馈可线性化的充分条件及求取一般光滑轨迹的系统方法,并通过垂直起降系统等示例验证其有效性。

摘要:

所关注的控制系统通常在李群变换下保持不变。针对此类控制系统,本文构建了一个基于李对称性的几何框架,并由此得到了动态反馈可线性化的一个充分条件。此外,理论表明可以给出一个系统性步骤来获得所有光滑的、一般的系统轨迹。除了光滑性和对称性的存在之外,对控制系统的局部形式不作进一步假设,因此允许系统是完全非线性和时变的。同样,对动态补偿器的局部形式也不施加任何约束。本文特别关注与具有对称性的控制系统相关的几何(坐标无关)结构。为了展示该理论在实际中的应用,我们详细分析了若干控制系统的示例,包括垂直起降系统,证明了李对称性在动态反馈线性化中所起的重要作用。除此之外,还讨论了一些较为基础的教学示例,以帮助阅读本文。上述构造已在 Maple 软件包 DifferentialGeometry 中实现自动化。

英文摘要:

Control systems of interest are often invariant under Lie groups of transformations. For such control systems, a geometric framework based on Lie symmetry is formulated, and from this a sufficient condition for dynamic feedback linearizability obtained. Additionally, a systematic procedure for obtaining all the smooth, generic system trajectories is shown to follow from the theory. Besides smoothness and the existence of symmetry, no further assumption is made on the local form of a control system, which is therefore permitted to be fully nonlinear and time varying. Likewise, no constraints are imposed on the local form of the dynamic compensator. Particular attention is given to the consideration of geometric (coordinate independent) structures associated to control systems with symmetry. To show how the theory is applied in practice we work through illustrative examples of control systems, including the vertical take-off and landing system, demonstrating the significant role that Lie symmetry plays in dynamic feedback linearization. Besides these, a number of more elementary pedagogical examples are discussed as an aid to reading the paper. The constructions have been automated in the Maple package DifferentialGeometry.

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。

↑