arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2403.03030eess.SYcs.AIcs.SYmath.OC
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统一设计稳定非线性系统的控制器以满足规范有界控制输入

Unifying Controller Design for Stabilizing Nonlinear Systems with Norm-Bounded Control Inputs

Ming Li, Zhiyong Sun, Siep Weiland

AI总结:

本文提出一种统一的控制器设计方法,通过扩展Lin-Sontag的通用公式并引入状态依赖的缩放项,解决了非线性系统稳定控制中的经典挑战,实现了控制器设计的统一和多样化,满足特定需求并优化成本函数。

摘要:

本文重新审视了在非线性系统中设计稳定控制器时面临的经典挑战,即具有规范有界输入约束的控制器设计。通过扩展Lin-Sontag的通用公式并引入通用(状态依赖)缩放项,提出了一种统一的控制器设计方法。该缩放项的引入使得能够推导出具有各种有利性质的替代通用公式,从而适用于定制的控制设计以满足特定要求,并在不同控制场景中提供灵活性。此外,我们提出了一种构造性方法来确定最优缩放项,从而得到一个优化问题的显式解,即基于优化的通用公式。所得到的控制器确保渐近稳定性,满足规范有界输入约束,并优化预定义的成本函数。最后,分析了统一控制器的本质属性,包括光滑性、原点处的连续性、稳定性裕度和逆最优性。仿真验证了该方法的有效性,展示了其在解决非线性系统复杂稳定控制问题中的效果。

英文摘要:

This paper revisits a classical challenge in the design of stabilizing controllers for nonlinear systems with a norm-bounded input constraint. By extending Lin-Sontag's universal formula and introducing a generic (state-dependent) scaling term, a unifying controller design method is proposed. The incorporation of this generic scaling term gives a unified controller and enables the derivation of alternative universal formulas with various favorable properties, which makes it suitable for tailored control designs to meet specific requirements and provides versatility across different control scenarios. Additionally, we present a constructive approach to determine the optimal scaling term, leading to an explicit solution to an optimization problem, named optimization-based universal formula. The resulting controller ensures asymptotic stability, satisfies a norm-bounded input constraint, and optimizes a predefined cost function. Finally, the essential properties of the unified controllers are analyzed, including smoothness, continuity at the origin, stability margin, and inverse optimality. Simulations validate the approach, showcasing its effectiveness in addressing a challenging stabilizing control problem of a nonlinear system.

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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