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arXiv 1508.07076eess.SYcs.SY
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多智能体系统的一种H∞协同故障恢复控制

An $H_{\infty}$ Cooperative Fault Recovery Control of Multi-Agent Systems

Concordia University(康科迪亚大学);Qatar University(卡塔尔大学)

Zahra Gallehdari, Nader Meskin, Khashayar Khorasani

AI总结:

本文研究了多智能体系统在执行器故障下的H∞性能故障恢复控制问题,设计分布式控制重构策略以保证状态一致性误差有界或渐近收敛,故障系统输出与健康系统一致,并最小化H∞性能界。

摘要:

本文研究了多智能体系统在执行器故障下的H∞性能故障恢复控制问题。我们的主要目标是设计一种分布式控制重构策略,使得:a)在无扰动情况下,状态一致性误差要么保持有界,要么渐近收敛到零;b)在存在执行器故障时,故障系统的输出与健康系统相同;c)在有界能量扰动下,指定的H∞性能界被最小化。重构控制律的增益首先通过几何方法选择,一组控制器保证故障代理的输出模仿健康代理,并满足一致性目标。接下来,控制律增益选择的剩余自由度用于最小化指定H∞性能指标的界。研究了故障检测与隔离模块决策中不确定性和不完美性对正确估计故障严重性的影响,以及触发重构控制律延迟的影响,并获得最大可容忍估计不确定性和时间延迟的界。所提出的分布式和协同控制恢复方法应用于五艘自主水下车辆团队,以展示其在各种执行器故障、触发恢复控制延迟、故障检测与隔离不完美性和不可靠性下的整体团队需求完成能力。

英文摘要:

In this work, an $H_{\infty}$ performance fault recovery control problem for a team of multi-agent systems that is subject to actuator faults is studied. Our main objective is to design a distributed control reconfiguration strategy such that \textbf{a)} in absence of disturbances the state consensus errors either remain bounded or converge to zero asymptotically, \textbf{b)} in presence of actuator fault the output of the faulty system behaves exactly the same as that of the healthy system, and \textbf{c)} the specified $H_{\infty}$ performance bound is guaranteed to be minimized in presence of bounded energy disturbances. The gains of the reconfigured control laws are selected first by employing a geometric approach where a set of controllers guarantees that the output of the faulty agent imitates that of the healthy agent and the consensus achievement objectives are satisfied. Next, the remaining degrees of freedom in the selection of the control law gains are used to minimize the bound on a specified $H_{\infty}$ performance index. The effects of uncertainties and imperfections in the FDI module decision in correctly estimating the fault severity as well as delays in invoking the reconfigured control laws are investigated and a bound on the maximum tolerable estimation uncertainties and time delays are obtained. Our proposed distributed and cooperative control recovery approach is applied to a team of five autonomous underwater vehicles to demonstrate its capabilities and effectiveness in accomplishing the overall team requirements subject to various actuator faults, delays in invoking the recovery control, fault estimation and isolation imperfections and unreliabilities under different control recovery scenarios.

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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