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arXiv 1202.6436eess.SYcs.SY
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不确定非线性系统鲁棒控制设计的均值定理方法

A Mean Value Theorem Approach to Robust Control Design for Uncertain Nonlinear Systems

University of New South Wales at Australian Defence Force Academy(新南威尔士大学澳大利亚皇家军事学院);University of Waterloo(滑铁卢大学)

Obaid Ur Rehman, Ian R. Petersen, Barıs Fidan

AI总结:

提出一种基于均值定理的鲁棒反馈线性化两步方案,将不确定非线性系统转化为MIMO线性不确定模型,并设计极小极大LQR控制器,应用于吸气式高超声速飞行器的速度和高度跟踪控制。

摘要:

本文提出了一种利用鲁棒反馈线性化方法为一类不确定非线性系统设计跟踪控制器的方案。该方案由两步组成。第一步,采用鲁棒反馈线性化方法建立相应不确定非线性系统的线性化不确定性模型。在这一步中,使用标准反馈线性化方法对不确定非线性系统的标称非线性动态进行线性化。然后,利用均值定理在任意点对剩余的非线性不确定性进行线性化。该方法给出了一个具有结构化不确定性表示的多输入多输出(MIMO)线性不确定系统模型。第二步,针对MIMO线性化不确定系统模型设计极小极大线性二次调节(LQR)控制器。为了证明所提方法的有效性,将其应用于吸气式高超声速飞行器的速度和高度跟踪控制问题。

英文摘要:

This paper presents a scheme to design a tracking controller for a class of uncertain nonlinear systems using a robust feedback linearization approach. The scheme is composed of two steps. In the first step, a linearized uncertainty model for the corresponding uncertain nonlinear system is developed using a robust feedback linearization approach. In this step, the standard feedback linearization approach is used to linearize the nominal nonlinear dynamics of the uncertain nonlinear system. The remaining nonlinear uncertainties are then linearized at an arbitrary point using the mean value theorem. This approach gives a multi-input multi-output (MIMO) linear uncertain system model with a structured uncertainty representation. In the second step, a minimax linear quadratic regulation (LQR) controller is designed for MIMO linearized uncertain system model. In order to demonstrate the effectiveness of the proposed method, it is applied to a velocity and altitude tracking control problem for an air-breathing hypersonic flight vehicle.

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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