Sampled-Data Cooperative Output Regulation: An Adaptive Distributed Continuous-Discrete Observer Approach

被引:2
|
作者
Zhang, Ying [1 ]
Su, Youfeng [1 ]
Cai, He [2 ]
机构
[1] Fuzhou Univ, Coll Comp & Data Sci, Fuzhou 350116, Peoples R China
[2] South China Univ Technol, Sch Automat Sci & Engn, Guangzhou 510641, Peoples R China
基金
中国国家自然科学基金;
关键词
Adaptive distributed observer; certainty equivalence; multiagent system; output regulation; sampled-data control; MULTIAGENT SYSTEMS; CONSENSUS;
D O I
10.1109/TAC.2023.3282848
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This article studies the sampled-data cooperative output regulation problem for linear multiagent systems. First, a novel adaptive distributed continuous-discrete observer is established to recover the leader's state, which, on one hand, only relies on the sampling output of the leader, and on the other hand, does not need to store the sampled message from neighbors. Second, by solely making use of the digital states of both the agent and the distributed observer, a certainty equivalence control law is synthesized featuring a time-varying feedforward gain. It is rigorously proven that, with this time-varying feedforward gain, the proposed control approach can achieve exponential convergence of the tracking errors given arbitrary time-varying leader's signal, and the upper bound for the sampling intervals is explicitly given. Third, for the class of chain-integrator multiagent systems, the proposed control approach does not need any restriction on the upper bound of the sampling intervals, and thus would be more practical in certain application scenarios from the perspective of energy saving. The performance of the proposed control approach is validated by the simulation results of inverter-based distributed generation systems.
引用
收藏
页码:1234 / 1241
页数:8
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