事件驱动量测-通信联合框架下基于LMPC的多AUV编队控制方法

AUV formation control method based on event driven measurement communication framework

  • 摘要: 【目的】针对多自主水下航行器(Autonomous Underwater Vehicle, AUV)编队运动过程中系统状态感知及传输能力受限的问题,提出一种事件驱动量测-通信联合框架下分布式鲁棒模型预测的编队控制方法。【方法】通过结合编队通讯拓扑网络以及系统状态,建立基于状态观测的事件触发机制。该机制利用AUV之间的相对量测信息,有效避免了因水声广播通信失效所导致的通信延迟和数据丢失,从而提高了无位置信息交互情况下系统的可观测性。在此基础上,提出一种基于Lyapunov理论的分布式编队预测控制器,并采用反步法控制律构建收缩约束,以确保预测控制器的迭代过程中可行性与闭环稳定性。【结果】理论分析与仿真结果表明,该方法可有效提高AUV编队在系统状态感知及传输能力受限情况下的编队稳定性与跟踪精度。【结论】所提方法具有良好的可行性和有效性,具有实际工程意义。

     

    Abstract: ObjectivesAiming at the problem that the system state perception and transmission ability are limited during the formation movement of multiple autonomous underwater vehicles (AUV), a distributed robust model predictive formation control method based on event driven measurement communication joint framework is proposed. Methods>By combining the formation communication topology network and system state, an event triggering mechanism based on state observation is established. The mechanism uses the relative measurement information between AUVs to effectively avoid the communication delay and data loss caused by the failure of underwater acoustic broadcasting communication, so as to improve the observability of the system without location information interaction. On this basis, a distributed formation predictive controller based on Lyapunov theory is proposed, and the contraction constraint is constructed by using the backstepping control law to ensure the feasibility and closed-loop stability of the predictive controller in the iterative process. ResultsTheoretical analysis and simulation results show that this method can effectively improve the stability and tracking accuracy of AUV formation under the condition of limited system state perception and transmission ability.ConclusionsThe proposed method has good feasibility and effectiveness, and has practical engineering significance.

     

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