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Title: A Graphical Design Approach for Two-Input Single-Output Systems Exploiting Plant/Controller Alignment: Design and Application

Abstract

Due to the unique structure of two-input single-output (TISO) feedback systems, several closed-loop properties can be characterized using the concepts of plant and controller “directions” and “alignment.” Poor plant/controller alignment indicates significant limitations in terms of closed-loop performance. In general, it is desirable to design a controller that is well aligned with the plant in order to minimize the size of the closed-loop sensitivity functions and closed-loop interactions. Although the concept of alignment can be a useful analysis tool for a given plant/controller pair, it is not obvious how a controller should be designed to achieve good alignment. We present a new controller design approach, based on the PQ method (Schroeck et al., 2001, “On Compensator Design for Linear Time invariant Dual-Input Single-Output Systems,” IEEE/ASME Trans. Mechatronics, 6(1), pp. 50–57), which explicitly incorporates knowledge of alignment into the design process. Here, this is accomplished by providing graphical information about the alignment angle on the Bode plot of the PQ frequency response. We show the utility of this approach through a design example.

Authors:
 [1];  [2]
+ Show Author Affiliations
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
Sandia University Programs; USDOE
OSTI Identifier:
1570278
Report Number(s):
SAND-2019-10667J
Journal ID: ISSN 0022-0434; 679243
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Dynamic Systems, Measurement, and Control
Additional Journal Information:
Journal Volume: 142; Journal Issue: 1; Journal ID: ISSN 0022-0434
Publisher:
ASME
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS

Citation Formats

Weir, Nathan A., and Alleyne, Andrew G. A Graphical Design Approach for Two-Input Single-Output Systems Exploiting Plant/Controller Alignment: Design and Application. United States: N. p., 2019. Web. doi:10.1115/1.4044717.
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Weir, Nathan A., & Alleyne, Andrew G. A Graphical Design Approach for Two-Input Single-Output Systems Exploiting Plant/Controller Alignment: Design and Application. United States. https://doi.org/10.1115/1.4044717
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Weir, Nathan A., and Alleyne, Andrew G. Wed . "A Graphical Design Approach for Two-Input Single-Output Systems Exploiting Plant/Controller Alignment: Design and Application". United States. https://doi.org/10.1115/1.4044717. https://www.osti.gov/servlets/purl/1570278.
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@article{osti_1570278,
title = {A Graphical Design Approach for Two-Input Single-Output Systems Exploiting Plant/Controller Alignment: Design and Application},
author = {Weir, Nathan A. and Alleyne, Andrew G.},
abstractNote = {Due to the unique structure of two-input single-output (TISO) feedback systems, several closed-loop properties can be characterized using the concepts of plant and controller “directions” and “alignment.” Poor plant/controller alignment indicates significant limitations in terms of closed-loop performance. In general, it is desirable to design a controller that is well aligned with the plant in order to minimize the size of the closed-loop sensitivity functions and closed-loop interactions. Although the concept of alignment can be a useful analysis tool for a given plant/controller pair, it is not obvious how a controller should be designed to achieve good alignment. We present a new controller design approach, based on the PQ method (Schroeck et al., 2001, “On Compensator Design for Linear Time invariant Dual-Input Single-Output Systems,” IEEE/ASME Trans. Mechatronics, 6(1), pp. 50–57), which explicitly incorporates knowledge of alignment into the design process. Here, this is accomplished by providing graphical information about the alignment angle on the Bode plot of the PQ frequency response. We show the utility of this approach through a design example.},
doi = {10.1115/1.4044717},
journal = {Journal of Dynamic Systems, Measurement, and Control},
number = 1,
volume = 142,
place = {United States},
year = {2019},
month = {10}
}
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Journal Article:
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https://doi.org/10.1115/1.4044717
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Figures / Tables:

Fig. 1 Fig. 1: TISO feedback system
All figures and tables (19 total)
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Works referenced in this record:

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On compensator design for linear time-invariant dual-input single-output systems
journal, March 2001

  • Schroeck, S. J.; Messner, W. C.; McNab, R. J.
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    Figures / Tables found in this record:

    Fig. 1 (p. 3)figure
    Fig. 2 (p. 8)figure
    Fig. 3 (p. 8)figure
    Fig. 4 (p. 9)figure
    Fig. 5 (p. 11)figure
    Fig. 6 (p. 12)figure
    Table 1 (p. 12)table
    Fig. 7 (p. 13)figure
    Fig. 8 (p. 14)figure
    Fig. 9 (p. 14)figure
    Table 2 (p. 14)table
    Fig. 10 (p. 15)figure
    Fig. 11 (p. 17)figure
    Fig. 12 (p. 17)figure
    Fig. 13 (p. 17)figure
    Fig. 14 (p. 18)figure
    Fig. 15 (p. 19)figure
    Fig. 16 (p. 20)figure
    Fig. 17 (p. 20)figure
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