Distributed Collaborative Processing under Communication Delay over Wireless Sensor and Actuator Networks

  • Lei Mo Key Laboratory of Autonomous Systems and Network Control, Ministry of Education College of Automation Science and Engineering South China University of Technology
  • Bugong Xu Key Laboratory of Autonomous Systems and Network Control, Ministry of Education College of Automation Science and Engineering South China University of Technology Guangzhou 510640, China

Abstract

In wireless sensor and actuator networks (WSANs), the sensor nodes are involved in gathering information about the physical phenomenon, while the actuator nodes take decisions and then perform appropriate actions upon the environment. The collaborative operation of sensor and actuator nodes brings significant advantages over WSNs, including improved accuracy and timely actions upon the sensed phenomena. However, unreliable wireless communication and finding a proper control strategy cause challenges in designing such network control system. In order to accomplish effective sensing and acting tasks, efficient coordination mechanisms among different nodes are required. In this paper, the coordination and communication problems in WSANs are studied. First, we formulate the mathematical models for the WSANs system. Then, a predictor-controller algorithm based on distributed estimation is adopted to mitigate the effects of network-induced delay. Finally, we apply a collaborative processing mechanism to meet the desired system requirements and improve the overall control performance. This approach will group the sensor and actuator nodes to work in parallel so as to reduce the computation complexity and enhance the system reacting time. Simulation results demonstrate the effectiveness of our proposed method.

Author Biography

Lei Mo, Key Laboratory of Autonomous Systems and Network Control, Ministry of Education College of Automation Science and Engineering South China University of Technology
Department of Mathematics and Computer Science

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Published
2014-09-16
How to Cite
MO, Lei; XU, Bugong. Distributed Collaborative Processing under Communication Delay over Wireless Sensor and Actuator Networks. INTERNATIONAL JOURNAL OF COMPUTERS COMMUNICATIONS & CONTROL, [S.l.], v. 7, n. 4, p. 709-720, sep. 2014. ISSN 1841-9844. Available at: <http://univagora.ro/jour/index.php/ijccc/article/view/1369>. Date accessed: 29 oct. 2020. doi: https://doi.org/10.15837/ijccc.2012.4.1369.

Keywords

Wireless sensor and actuator networks, Distributed estimation, Collaborative processing