ISSN 1000-1239 CN 11-1777/TP

计算机研究与发展 ›› 2017, Vol. 54 ›› Issue (11): 2639-2645.doi: 10.7544/issn1000-1239.2017.20160643

• 网络技术 • 上一篇    



  1. 1(物联网应用技术教育部工程中心(江南大学) 江苏无锡 214122); 2(沈阳航空航天大学自动化学院 沈阳 110000) (
  • 出版日期: 2017-11-01
  • 基金资助: 

Output Feedback Control Based on Event-Based Sample in Wireless Sensor Networks

Xie Chenghan1, Lu Saijie1, Wang Hao2, Peng Li1   

  1. 1(Engineering Research Center of Internet of Things Technology Applications(Jiangnan University), Ministry of Education, Wuxi, Jiangsu 214122); 2(School of Automation, Shenyang Aerospace University, Shenyang 110000)
  • Online: 2017-11-01

摘要: 近10年,随着传感器、无线网络技术的发展,无线传感器网络促进了一系列新型网络化应用的诞生.然而在这一系列应用中,无线传感器网络耗能过多成为了制约其发展的瓶颈.在实际的应用中,传输所消耗的能量占电池总消耗能量的90%,因此研究节点数据传输节能问题有着巨大的实际意义.基于事件驱动的线性离散时不变系统的输出反馈控制算法,所提出的事件驱动传输策略能决定传感器何时发送数据.首先,通过一类近似二次值函数来推导出这种传输策略,基于此类传输机制,该系统可以很好地平衡执行器性能和无线传输速率.其次,利用所给出的传输策略设计了相应的输出反馈控制器.最后,通过数值仿真验证了理论结果的可行性和有效性.

关键词: 无线传感器网络, 节能, 输出反馈控制, 有界, 事件驱动的数据传输策略

Abstract: With the development of sensors, actuators and wireless network technology, wireless sensor networks have enabled a series of new applications in the past decade. However, we find that too much energy consumption and over-abundant occupancy rates of bandwidth are great challenges in these new applications because of the wireless channel transmission. Further, the energy consumption of the transmission accounts for 90% of the total energy of the battery in the general cases. So it has great practical significance to study the energy saving of the node's data transmission. In this paper, the problem we discuss above involving feedback control with limited actuation and transmission rate is considered. We study output feedback control based on an innovative event-triggered transmission scheme in a type of linear time-invariant discrete system. A good tradeoff between the actuator performance and communication rate can be achieved according to this transmission policy which decides the transfer time of the data packet. This kind of transmission strategy is designed through proving the upper bound on system performance, and then the corresponding output feedback control gain matrix is also calculated in detail. Finally, a numerical example is given to verify the potential and effectiveness of this theoretical transmission scheme.

Key words: wireless sensor networks, energy saving, output feedback control, boundness, event-triggered data transmission scheme