An optimal control method for applications using wireless sensor/actuator networks

Authors:
Xianghui Cao;Jiming Chen;Chuanhou Gao;Youxian Sun
Affiliations:
State Key Lab. of Industrial Control Technology, Institute of Industrial Process Control, Zhejiang University, Hangzhou 310027, PR China;State Key Lab. of Industrial Control Technology, Institute of Industrial Process Control, Zhejiang University, Hangzhou 310027, PR China;Institute of Systems Optimization Techniques, Zhejiang University, Hangzhou 310027, PR China;State Key Lab. of Industrial Control Technology, Institute of Industrial Process Control, Zhejiang University, Hangzhou 310027, PR China
Venue:
Computers and Electrical Engineering
Year:
2009

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Abstract

The wireless sensor/actuator networks (WSANs) can be used for spatially distributed control systems. With smart sensors and actuators, the WSANs are able to not only sense the control system states and report measurements, but also perform control and actuation. This paper investigates WSANs on their ability of control. A centralized controller is introduced into WSANs to make up closed-loop control systems, in which control decisions are made based on global network-wide information. A model of the control and communication over WSANs is made theoretically, based on which we achieved an optimal control method. It is demonstrated by simulations that the control method proposed could stabilize the control system quickly.