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Aperiodic sampled-data control of distributed networked control systems with time-delay
Transactions of the Institute of Measurement and Control ( IF 1.7 ) Pub Date : 2021-01-18 , DOI: 10.1177/0142331220982504
Kritika Bansal 1 , Pankaj Mukhija 1
Affiliation  

This paper proposes a hybrid aperiodic sampled-data mechanism for the control of interconnected subsystems with time-delay. The proposed aperiodic sampled-data mechanism comprises of two stages. In the first stage, the next sampling instant for each subsystem is computed using self-triggering strategy. Thereafter, in the second stage, an event-triggering condition is checked at these sampling instants for each subsystem and signal is transmitted to the controller only if the event-triggering condition is violated. Further, to reduce the computational complexity involved in the proposed triggering mechanism, another triggering mechanism with integrated event-triggering and self-triggering is developed. Also, an upper bound on delay for each subsystem is computed to ensure the stability of distributed networked control system. The results proposed are validated using a simulation example. A comparison of the proposed technique with other triggering mechanisms in terms of sampling instants, number of transmissions to the controller, maximum delay bound and other performance measures is drawn through simulation example.



中文翻译:

具有时间延迟的分布式网络控制系统的非周期性采样数据控制

本文提出了一种混合的非周期性采样数据机制,用于控制具有时间延迟的互连子系统。所提出的非周期性采样数据机制包括两个阶段。在第一阶段,使用自触发策略计算每个子系统的下一个采样时刻。此后,在第二阶段中,在每个子系统的这些采样时刻检查事件触发条件,并且仅在违反事件触发条件时才将信号发送到控制器。此外,为了降低所提出的触发机制所涉及的计算复杂度,开发了另一种具有集成事件触发和自触发的触发机制。另外,计算每个子系统的延迟上限,以确保分布式网络控制系统的稳定性。所提出的结果使用一个仿真示例进行了验证。通过仿真实例,将所提出的技术与其他触发机制在采样时刻,到控制器的传输次数,最大延迟范围和其他性能指标方面进行了比较。

更新日期:2021-01-18
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