Sporadic event-based control of first-order linear stochastic systems
Sporadic event-based control of first-order linear stochastic systems
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DOI：
10.1016/j.automatica.2008.03.026
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发表时间：
2008-11-01
期刊：
影响因子：
6.4
通讯作者：
Cervin, Anton
中科院分区：
文献类型：
--
作者：
Henningsson, Toivo;Johannesson, Erik;Cervin, Anton
计算机控制系统的标准方法是定期采样和控制。在某些应用中，例如网络控制系统或能量受限系统，使用基于事件的控制方案可能是有利的。先前的工作已经研究了一阶随机系统的非周期基于事件的控制。然而，在任何实际的实现中，必须有一个明确定义的最小事件间时间。在本文中，我们探索了一阶线性随机系统的两种此类零星控制方案，并将可实现的性能与周期和非周期控制进行了比较。结果表明，在降低过程状态方差和降低控制动作频率方面，偶发控制比周期性控制具有更好的性能。 (C) 2008 Elsevier Ltd. 保留所有权利。
The standard approach in computer-controlled systems is to sample and control periodically. In certain applications, such as networked control systems orenergy-constrained systems, it could be advantageous to instead use event-based control schemes. Aperiodic event-based control of first-order stochastic systems has been investigated in previous work. In any real implementation, however, it is necessary to have a well-defined minimum inter-event time. In this paper, we explore two such sporadic control schemes for first-order linear stochastic systems and compare the achievable performance to both periodic and aperiodic control. The results show that sporadic control can give better performance than periodic control in terms of both reduced process state variance and reduced control action frequency. (C) 2008 Elsevier Ltd. All rights reserved.