Event-predictive control for energy saving of wireless networked control system
Event-predictive control for energy saving of wireless networked control system
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DOI：
10.1109/acc.2009.5160732
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发表时间：
2009-06
期刊：
影响因子：
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通讯作者：
Y. Iino;T. Hatanaka;M. Fujita
中科院分区：
文献类型：
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作者：
Y. Iino;T. Hatanaka;M. Fujita
本文讨论了事件预测控制的新概念，它是事件触发控制的一种扩展。研究的目的是将这种异步采样控制策略应用到无线网络控制系统中，以节省无线节点的电池能量消耗。其核心思想是在保证控制性能的前提下，最大化控制间隔，为控制系统中无线网络节点的电池寿命节省通信能量成本。引入了一种启发式的新概念“预测事件”，它被预先确定为被控系统未来预测响应与稳定区域轨迹的交叉点，称为“容许集轨迹”，以保证系统可恢复到稳定区域。然后，根据预测事件控制无线节点的睡眠和唤醒模式。讨论了稳定性条件的一些考虑，在一定的假设下，该条件可推广到一类非线性对象。数值算例表明了该方法的有效性。
This paper discusses on a new concept of Event-predictive control, which is an extension of the Event-triggered control. The aim of the research is to apply such asynchronous sampling control strategy to a wireless networked control system to save battery energy consumption in the wireless nodes. The key idea is to maximize the control interval, under the condition of appropriate control performance, to save communication energy cost for battery life of wireless network nodes incorporated in the control system. A heuristic new concept of “predictive event” is introduced which is pre-determined as a cross-point of future predictive response of the controlled system and the stable region trajectory named “admissible set trajectory” to ensure recoverability to stable region. Then the sleep and wake mode of the wireless node is controlled according to the predictive events. Some considerations on stability condition are discussed, which is extendable to a class of nonlinear plants under some assumptions. A numerical example is illustrated to show the effectiveness of the proposed method.