Building-Environment Control With Wireless Sensor and Actuator Networks: Centralized Versus Distributed
Building-Environment Control With Wireless Sensor and Actuator Networks: Centralized Versus Distributed
复制标题
使用无线传感器和执行器网络进行建筑环境控制：集中式与分布式
DOI：
10.1109/tie.2009.2029585
复制
发表时间：
2010-11-01
影响因子：
7.7
通讯作者：
Sun, Youxian
中科院分区：
文献类型：
--
作者：
Cao, Xianghui;Chen, Jiming;Sun, Youxian
研究了建筑环境控制系统中无线传感器与执行器网络(WSAN)中控制与通信的联合问题。在传统控制系统中，集中控制(CC)和分散控制(DC)是两种主要的控制方式。然而，在控制和通信的联合问题上比较这两种方法的工作很少，特别是在作为控制环路组件的WSAN中。在本文中，我们提出了一种基于全局信息进行控制决策的CC方案和一种使分布式执行器能够进行局部控制决策的DC方案。我们还开发了与控制策略兼容的系统设备之间的无线通信方法，并提出了一种降低丢包率的方法。我们通过仿真从多个方面对这两种方案进行了比较。仿真结果表明，DC算法可以获得与CC算法相当的控制性能，而DC算法比CC算法具有更强的抗丢包能力和更低的计算复杂度。此外，在某些条件下，DC比CC具有更短的致动潜伏期。
This paper considers joint problems of control and communication in wireless sensor and actuator networks (WSANs) for building-environment control systems. In traditional control systems, centralized control (CC) and distributed control (DC) are two major approaches. However, little work has been done in comparing the two approaches in joint problems of control and communication, particularly in WSANs serving as components of control loops. In this paper, we develop a CC scheme in which control decisions are made based on global information and a DC scheme which enables distributed actuators to make control decisions locally. We also develop methods that enable wireless communications among system devices compatible with the control strategies, and propose a method for reducing packet-loss rate. We compare the two schemes using simulations in many aspects. Simulation results show that the DC can achieve a comparable control performance of the CC, while the DC is more robust against packet loss and has lower computational complexity than the CC. Furthermore, the DC has shorter actuation latency than the CC under certain conditions.