2010/04/03 by Manuel Mazo, Paulo Tabuada, Mazo, Manuel +1 · 2 citations
Computer Science · #Petri Nets in System Modeling #Network Time Synchronization Technologies #Energy Efficient Wireless Sensor Networks
paper · pdf · doi:10.48550/arxiv.1004.0477
In recent years we have witnessed a move of the major industrial automation\nproviders into the wireless domain. While most of these companies already offer\nwireless products for measurement and monitoring purposes, the ultimate goal is\nto be able to close feedback loops over wireless networks interconnecting\nsensors, computation devices, and actuators. In this paper we present a\ndecentralized event-triggered implementation, over sensor/actuator networks, of\ncentralized nonlinear controllers. Event-triggered control has been recently\nproposed as an alternative to the more traditional periodic execution of\ncontrol tasks. In a typical event-triggered implementation, the control signals\nare kept constant until the violation of a condition on the state of the plant\ntriggers the re-computation of the control signals. The possibility of reducing\nthe number of re-computations, and thus of transmissions, while guaranteeing\ndesired levels of performance makes event-triggered control very appealing in\nthe context of sensor/actuator networks. In these systems the communication\nnetwork is a shared resource and event-triggered implementations of control\nlaws offer a flexible way to reduce network utilization. Moreover reducing the\nnumber of times that a feedback control law is executed implies a reduction in\ntransmissions and thus a reduction in energy expenditures of battery powered\nwireless sensor nodes.\n