The objective of this paper is to propose both feedforward and feedback controllers designed by the Linear Quadratic Gaussian and Loop Transfer Recovery (LQG/LTR) methodology. The adoption of a two-degree-of-freedom controller with feedforward and state-feedback controllers can improve the disadvantages of high gain for only feedback controllers designed by the LQG/LTR method. This paper also derives the algorithms which can take all the time-domain, frequency-domain, and robust design techniques into a unified method. An example of F-16 lateral autopilot design is given, which shows that the proposed method is more robust to measurement noise and more practical in applications, and has better steady-state responses in time domain.
Optimal feedforward and feedback controllers designed by LQG/LTR method
Entwurf optimaler vorwärts- und rückgekoppelter Regler
Journal of the Chinese Institute of Engineers ; 20 , 1 ; 57-66
1997
10 Seiten, 13 Quellen
Aufsatz (Zeitschrift)
Englisch
Low-order feedforward controllers: Optimal performance and practical considerations
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