NDLI: Rate limited reference governor for network controlled systems

Content Provider	IEEE Xplore Digital Library
Author	Di Cairano, S. Kolmanovsky, I.V.
Copyright Year	2010
Description	Author affiliation: Ford Res. & Adv. Eng., Dearborn, MI, USA (Di Cairano, S.) \|\| Dept. Aerosp. Eng., Univ. of Michigan, Ann Arbor, MI, USA (Kolmanovsky, I.V.)
Abstract	Controllers that communicate with sensors and actuators via networks are becoming increasingly common. The networks introduce flexibility, reconfigurability, and simplify maintenance and design, but may degrade the closed-loop performance, due to phenomena such as delays and data losses. These may result in loss of stability and constraints violation. In this paper we propose a control architecture based on reference governor for dealing with network-induced time-varying delays. By modelling the closed-loop as a sampled-data system, the effect of the delay results in an input-variation dependent disturbance, so that the time delay acts as a limit on the rate of change of the command. For the case of delay smaller than the sampling period, control strategies are proposed for full and partial state measurement cases, guaranteeing robust constraints satisfaction and convergence to the setpoint. The results are used for the case where longer than sampling period (and possibly unbounded) delays occur, and a strategy that guarantees convergence using probabilistic arguments is derived.
Starting Page	3704
Ending Page	3709
File Size	1014549
Page Count	6
File Format	PDF
ISBN	9781424474264
ISSN	07431619
e-ISBN	9781424474271
DOI	10.1109/ACC.2010.5530650
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Control systems Delay effects Sampling methods Convergence Sensor phenomena and characterization Actuators Degradation Performance loss Stability Robust control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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