Model-Based Network Scheduling and Control for Systems over the IEEE 802.15.4 Network
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Model-Based Network Scheduling and Control for Systems over the IEEE 802.15.4 Network∗ ZHAO Yunbo · XU Deheng · HE Jiangtao · XI Xugang · KANG Yu
DOI: 10.1007/s11424-020-9081-4 Received: 10 March 2019 / Revised: 20 November 2019 c The Editorial Office of JSSC & Springer-Verlag GmbH Germany 2020 Abstract The scheduling and control of a class of wireless networked control system is investigated, whose control loop is closed via a shared IEEE 802.15.4 wireless network. By using a gain scheduler within the packet-based control framework and fitting the delay-dependent gains into a time-delay system model, a less conservative self-triggered approach is proposed to determine the sampling update, which consequently enables the design of two network scheduling algorithms to reduce the communication usage. Numerical and TrueTime based examples illustrate the effectiveness of the proposed approach in the sense that it reduces greatly the communication usage while maintaining satisfactory control performance. Keywords
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IEEE 802.15.4, packet-based control, scheduling, wireless networked control system.
Introduction
With the rapid advance of the wireless communication technology, the data transmission channels of control systems can now be implemented with various kinds of wireless communication networks, thus forming the so-called wireless networked control systems (WNCSs). Applications of WNCSs can already be found in smart home, intelligent transportation, smart agriculture[1–3] , and so forth. Furthermore, the next era intelligent systems such as Internet of Things, cyber physical systems, etc., are all demanding wireless connections among their components, hence creating great significance for the development of WNCSs. To make WNCSs ZHAO Yunbo · XU Deheng · HE Jiangtao College of Information Engineering, Zhejiang University of Technology, Hangzhou 310023, China. Email: [email protected]; [email protected]; [email protected]. XI Xugang School of Automation, Hangzhou Dianzi University, Hangzhou 310018, China. KANG Yu Department of Automation, University of Science and Technology of China, Hefei 230027, China. ∗ This paper was supported by the National Natural Science Foundation of China under Grant Nos. 61673350, 61725304, 61673361, the Thousand Talents Plan of China and Zhejiang, the Youth Top-Notch Talent Support Program, and in part by the Youth Yangtze River Scholar. This paper was recommended for publication by Editor SUN Jian.
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ZHAO YUNBO, et al.
reliably useful in practice, however, requires not only new design for the controller but also deep insight for the characteristics of the wireless communication network, which have attracted broad attention in recent years[4–9] . Considerable works have already been reported on WNCSs, which may be roughly divided into two categories. The first category of study is more from the control theory perspective. Despite the different communication constraints caused by wireless communication networks, these constraints can still be formulated as certain parameters within con
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