NDLI: A control design method for unknown systems using frequency domain data

Content Provider	IEEE Xplore Digital Library
Author	Khadraoui, S. Nounou, H. Nounou, M. Datta, A. Bhattacharyya, S.P.
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Texas A&M Univ. at Qatar, Doha, Qatar (Khadraoui, S.; Nounou, H.) \|\| Dept. of Chem. Eng., Texas A&M Univ. at Qatar, Doha, Qatar (Nounou, M.) \|\| Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX, USA (Datta, A.; Bhattacharyya, S.P.)
Abstract	This paper deals with fixed-structure controller design for stable linear systems by using measurements. Most control design approaches developed in the literature are generally based on a mathematical model which can be obtained via identification system by using a set of measured data. However, an identified model, which is often built on the basis of some assumptions, cannot perfectly describe complex behaviors characterizing physical systems. Thus, the performance expected for the closed-loop system will be limited by the quality of such models used in the control design process. Hence, data-based controller design methods can be viewed as a possible alternative to model-based methods. In this paper, we propose to directly utilize frequency response data in the controller design. The principle is to design fixed-structure controllers for which the closed-loop frequency response fits a desired frequency response. This problem is formulated as an error minimization problem. The main feature of our proposed approach is that controller can be designed free of any mathematical model, which allows to avoid errors associated with identification process. Moreover, it enables to select low-order controllers, which are suitable for embedded systems. A simulation example is given to illustrate and validate the efficacy the proposed approach.
Starting Page	1
Ending Page	6
File Size	1439783
Page Count	6
File Format	PDF
ISBN	9781467357678
e-ISBN	9781467357692
DOI	10.1109/ASCC.2013.6606148
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-23
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Control design Frequency-domain analysis Unknown systems Low-order controller Performance achievement Error minimization Frequency response Frequency-domain data Closed loop systems Mathematical model Frequency control Model-free control
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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