NDLI: Frequency Response Analysis of Active Disturbance Rejection Based Control System

Content Provider	IEEE Xplore Digital Library
Author	Gang Tian Zhiqiang Gao
Copyright Year	2007
Description	Author affiliation: Cleveland State Univ., Cleveland (Gang Tian; Zhiqiang Gao)
Abstract	Active Disturbance Rejection is a relatively new, and quite different, design concept that shows much promise in obtaining consistent response in an industrial control system full of uncertainties. But most of the development and analysis has previously been shown in the time-domain. In this paper, frequency-domain analysis of such a control system is performed to quantify its performance and stability characteristics. The transfer function description of the controller is derived and, together with a highly uncertain linear time-invariant plant, the loop gain frequency response is analyzed. The result shows that the active disturbance rejection based control system possesses a high level of robustness. The bandwidth and stability margins, in particular, are nearly unchanged as the plant parameters vary significantly; so is the sensitivity to input disturbance. Such characteristics makes this control system an appealing solution in dealing with real world control problems where uncertainties abound.
Starting Page	1595
Ending Page	1599
File Size	327790
Page Count	5
File Format	PDF
ISBN	9781424404421
ISSN	10851992
DOI	10.1109/CCA.2007.4389465
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-01
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency response Control systems Uncertainty Industrial control Time domain analysis Frequency domain analysis Stability analysis Transfer functions Robust control Bandwidth Robustness Active Disturbance Rejection Stability Margins
Content Type	Text
Resource Type	Article

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