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Frequency‐domain linear quadratic optimal system design with two‐degree‐of‐freedom configuration
Author(s) -
Lin ChihMin,
Wu JiannMin
Publication year - 1997
Publication title -
optimal control applications and methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.458
H-Index - 44
eISSN - 1099-1514
pISSN - 0143-2087
DOI - 10.1002/(sici)1099-1514(199701/02)18:1<73::aid-oca590>3.0.co;2-9
Subject(s) - control theory (sociology) , frequency domain , weighting , parametric statistics , transfer function , linear system , controller (irrigation) , quadratic equation , computer science , signal (programming language) , noise (video) , closed loop transfer function , stability (learning theory) , mathematics , engineering , control (management) , medicine , mathematical analysis , agronomy , statistics , geometry , artificial intelligence , biology , electrical engineering , radiology , programming language , machine learning , image (mathematics) , computer vision
Using a parametric two‐degree‐of‐freedom controller configuration, a frequency domain linear quadratic optimal system design is developed to achieve closed‐loop stability and to minimize a quadratic cost function including control input minimization, model reference signal tracking, disturbance and noise rejection. By applying frequency‐dependent weighting functions, the derived method can easily achieve reference signal tracking and frequency shaping. A flight control system and a robot system are considered as design examples to illustrate the validity of the proposed design method. © 1997 John Wiley & Sons, Ltd.