Parameter optimization of dynamic inversion control laws for shipboard operations

Joseph Francis Horn, Junfeng Yang, Dooyong Lee, Chengjian He

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Two approaches to gains optimization of dynamic inversion control laws have been developed to facilitate the shipboard operation of rotorcraft. The first approach is a frequency-based method to optimize the tradeoffbetween stability margins and disturbance rejection properties; the second approach uses direct optimization of gains to enhance tracking performance in the time domain. Comparative studies show that both methods tend to use high gain design for improvement of tracking error while rejecting airwake disturbances and following station-keeping commands over a moving deck. The frequency domain based method provides firm information on the margin to instability, although this is done via analysis of each axis independently. The direct optimization approach directly addresses tracking error performance in all axes, but the method resulted in only moderate improvements over the baseline gains for the particular case studied.

Original languageEnglish (US)
Pages (from-to)1420-1433
Number of pages14
JournalAnnual Forum Proceedings - AHS International
StatePublished - Jan 1 2017
Event73rd American Helicopter Society International Annual Forum and Technology Display 2017 - Fort Worth, United States
Duration: May 9 2017May 11 2017

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Disturbance rejection

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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title = "Parameter optimization of dynamic inversion control laws for shipboard operations",
abstract = "Two approaches to gains optimization of dynamic inversion control laws have been developed to facilitate the shipboard operation of rotorcraft. The first approach is a frequency-based method to optimize the tradeoffbetween stability margins and disturbance rejection properties; the second approach uses direct optimization of gains to enhance tracking performance in the time domain. Comparative studies show that both methods tend to use high gain design for improvement of tracking error while rejecting airwake disturbances and following station-keeping commands over a moving deck. The frequency domain based method provides firm information on the margin to instability, although this is done via analysis of each axis independently. The direct optimization approach directly addresses tracking error performance in all axes, but the method resulted in only moderate improvements over the baseline gains for the particular case studied.",
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Parameter optimization of dynamic inversion control laws for shipboard operations. / Horn, Joseph Francis; Yang, Junfeng; Lee, Dooyong; He, Chengjian.

In: Annual Forum Proceedings - AHS International, 01.01.2017, p. 1420-1433.

Research output: Contribution to journalConference article

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AU - Yang, Junfeng

AU - Lee, Dooyong

AU - He, Chengjian

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