کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4976131 | 1365607 | 2007 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Design and comparison of LQG/LTR and Hâ controllers for a VSTOL flight control system
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
پردازش سیگنال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
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 Hâ 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 Hâ controller by only proper choose the weighting functions, meets the same performance for step response. Output robustness of both controllers is good but Hâ controller has poor input stability margin. The net controller order of Hâ is higher than the LQG/LTR method and the control effort of them is in the acceptable range.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Franklin Institute - Volume 344, Issue 5, August 2007, Pages 577-594
Journal: Journal of the Franklin Institute - Volume 344, Issue 5, August 2007, Pages 577-594
نویسندگان
Jafar Zarei, Allahyar Montazeri, Mohmmad Reza Jahed Motlagh, Javad Poshtan,