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 H∞ controllers for a VSTOL flight control system
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Design and comparison of LQG/LTR and H∞ controllers for a VSTOL flight control system
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 H∞ 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∞ controller by only proper choose the weighting functions, meets the same performance for step response. Output robustness of both controllers is good but H∞ controller has poor input stability margin. The net controller order of H∞ 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
نویسندگان
, , , ,