NDLI: Event-driven output feedback control for a class of nonlinear systems subject to disturbances

Content Provider	IEEE Xplore Digital Library
Author	Jiankun Sun Jun Yang Shihua Li Xisong Chen
Copyright Year	2015
Description	Author affiliation: Key Lab. of Meas. & Control of CSE, Southeast Univ., Nanjing, China (Jiankun Sun; Jun Yang; Shihua Li; Xisong Chen)
Abstract	In this paper, we propose an event-driven output feedback control strategy for a class of nonlinear systems subject to disturbances. Different from the time-driven control, the event-driven control can be regarded as a more reactive approach where the control actions are taken only when an event is triggered, thus the event-driven control has a better balance between the control performance and other system aspects (such as processor load, communication load, and system cost price). Based on the extended state observer (ESO), we propose a composite event-driven controller, which is asynchronously updated only when an intolerable effect on the closed-loop performance is produced. It is proved that the closed-loop system is globally uniformly bounded, and has a good robustness against disturbances. Meanwhile, the closed-loop system considered in this paper is a hybrid system, thus we need to consider the problem of Zeno behavior, which is a phenomenon unique to hybrid systems, and describes the situation where a hybrid system undergoes an unbounded number of discrete transitions in a finite and bounded length of time. Fortunately, it is proved that the system under the event-driven controller can avoids the Zeno behavior of the sampling, and has the significantly reduced sampling frequency compared with the time-driven controller. Finally, a simulation of DC-DC buck converter is conducted to demonstrate the efficiency of the new scheme.
Sponsorship	IEEE
Starting Page	003437
Ending Page	003442
File Size	238849
Page Count	6
File Format	PDF
e-ISBN	9781479917624
DOI	10.1109/IECON.2015.7392632
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-11-09
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Output feedback Observers Closed loop systems Nonlinear systems Frequency control Process control DC-DC buck converter Event-driven output feedback control Disturbance rejection Global uniform boundedness
Content Type	Text
Resource Type	Article

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