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arXiv 0810.0776math.OC
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非线性系统鲁棒全局镇定的松弛李雅普诺夫判据

Relaxed Lyapunov Criteria for Robust Global Stabilization of Nonlinear Systems

Iasson Karafyllis, Costas Kravaris, Nicolas Kalogerakis

摘要:

引入了松弛鲁棒控制李雅普诺夫函数的概念,并将其用于非线性系统的鲁棒反馈镇定器的设计。特别是,它示出的系统与输入约束,放松RCLF可以很容易地获得,而RCLF是不可用的。此外,它表明,使用放松RCLF通常会导致不同的反馈设计,通过使用标准的RCLF方法。利用松弛RCLFs反馈设计方法,设计了一个简单的控制器,保证了扰动恒化器模型的鲁棒全局镇定。

英文摘要:

The notion of the relaxed Robust Control Lyapunov Function (relaxed RCLF) is introduced and is exploited for the design of robust feedback stabilizers for nonlinear systems. Particularly, it is shown for systems with input constraints that relaxed RCLFs can be easily obtained, while RCLFs are not available. Moreover, it is shown that the use of relaxed RCLFs usually results to different feedback designs from the ones obtained by the use of the standard RCLF methodology. Using the relaxed RCLFs feedback design methodology, a simple controller that guarantees robust global stabilization of a perturbed chemostat model is provided.

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