Design and comparison of LQG/LTR and H-infinity controllers for a VSTOL flight control system

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Design and comparison of LQG/LTR and H-infinity controllers for a VSTOL flight control system. / Zarei, Jafar; Montazeri, Allahyar; Motlagh, Mohmmad Reza Jahed et al.
In: Journal of The Franklin Institute, Vol. 344, No. 5, 08.2007, p. 577-594.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Zarei, J, Montazeri, A, Motlagh, MRJ & Poshtan, J 2007, 'Design and comparison of LQG/LTR and H-infinity controllers for a VSTOL flight control system', Journal of The Franklin Institute, vol. 344, no. 5, pp. 577-594. https://doi.org/10.1016/j.jfranklin.2006.02.033

APA

Zarei, J., Montazeri, A., Motlagh, M. R. J., & Poshtan, J. (2007). Design and comparison of LQG/LTR and H-infinity controllers for a VSTOL flight control system. Journal of The Franklin Institute, 344(5), 577-594. https://doi.org/10.1016/j.jfranklin.2006.02.033

Vancouver

Zarei J, Montazeri A, Motlagh MRJ, Poshtan J. Design and comparison of LQG/LTR and H-infinity controllers for a VSTOL flight control system. Journal of The Franklin Institute. 2007 Aug;344(5):577-594. doi: 10.1016/j.jfranklin.2006.02.033

Author

Zarei, Jafar ; Montazeri, Allahyar ; Motlagh, Mohmmad Reza Jahed et al. / Design and comparison of LQG/LTR and H-infinity controllers for a VSTOL flight control system. In: Journal of The Franklin Institute. 2007 ; Vol. 344, No. 5. pp. 577-594.

Bibtex

@article{9942c7edaf664b089eea8e724c802942,

title = "Design and comparison of LQG/LTR and H-infinity controllers for a VSTOL flight control system",

abstract = "In this paper two robust controllers for a multivariable vertical short take-off and landing (VSTOL) aircraft system are designed and compared. The aim of these controllers is to achieve robust stability margins and good performance in step response of the system. LQG/LTR method is a systematic design approach based on shaping and recovering open-loop singular values while mixed-sensitivity H-infinity method is established by defining appropriate weighting functions to achieve good performance and robustness. Comparison of the two controllers show that LQG method requires rate feedback to increase damping of closed-loop system, while H-infinity controller by only proper choose the weighting functions, meets the same performance for step response. Output robustness of both controllers is good but H-infinity controller has poor input stability margin. The net controller order of H-infinity is higher than the LQG/LTR method and the control effort of them is in the acceptable range. (c) 2006 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.",

keywords = "LQG/LTR design, VSTOL flight control, robust control, Kalman filter",

author = "Jafar Zarei and Allahyar Montazeri and Motlagh, {Mohmmad Reza Jahed} and Javad Poshtan",

year = "2007",

month = aug,

doi = "10.1016/j.jfranklin.2006.02.033",

language = "English",

volume = "344",

pages = "577--594",

journal = "Journal of The Franklin Institute",

issn = "0016-0032",

publisher = "Elsevier Limited",

number = "5",

}

RIS

TY - JOUR

T1 - Design and comparison of LQG/LTR and H-infinity controllers for a VSTOL flight control system

AU - Zarei, Jafar

AU - Montazeri, Allahyar

AU - Motlagh, Mohmmad Reza Jahed

AU - Poshtan, Javad

PY - 2007/8

Y1 - 2007/8

N2 - In this paper two robust controllers for a multivariable vertical short take-off and landing (VSTOL) aircraft system are designed and compared. The aim of these controllers is to achieve robust stability margins and good performance in step response of the system. LQG/LTR method is a systematic design approach based on shaping and recovering open-loop singular values while mixed-sensitivity H-infinity method is established by defining appropriate weighting functions to achieve good performance and robustness. Comparison of the two controllers show that LQG method requires rate feedback to increase damping of closed-loop system, while H-infinity controller by only proper choose the weighting functions, meets the same performance for step response. Output robustness of both controllers is good but H-infinity controller has poor input stability margin. The net controller order of H-infinity is higher than the LQG/LTR method and the control effort of them is in the acceptable range. (c) 2006 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.

AB - In this paper two robust controllers for a multivariable vertical short take-off and landing (VSTOL) aircraft system are designed and compared. The aim of these controllers is to achieve robust stability margins and good performance in step response of the system. LQG/LTR method is a systematic design approach based on shaping and recovering open-loop singular values while mixed-sensitivity H-infinity method is established by defining appropriate weighting functions to achieve good performance and robustness. Comparison of the two controllers show that LQG method requires rate feedback to increase damping of closed-loop system, while H-infinity controller by only proper choose the weighting functions, meets the same performance for step response. Output robustness of both controllers is good but H-infinity controller has poor input stability margin. The net controller order of H-infinity is higher than the LQG/LTR method and the control effort of them is in the acceptable range. (c) 2006 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.

KW - LQG/LTR design

KW - VSTOL flight control

KW - robust control

KW - Kalman filter

U2 - 10.1016/j.jfranklin.2006.02.033

DO - 10.1016/j.jfranklin.2006.02.033

M3 - Journal article

VL - 344

SP - 577

EP - 594

JO - Journal of The Franklin Institute

JF - Journal of The Franklin Institute

SN - 0016-0032

IS - 5

ER -

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