QFT (Quantitative Feedback Theory) Digital Flight Control Design as Applied to the AFTI/F16

摘要

Quantitative Feedback Theory (QFT), developed by Professor Isaac Horowitz, has been shown to adequately synthesize compensators for a variety of continuous time systems. An investigation was made to extend QFT to sampled-data systems via a pseudo-continuous time approach. This investigation resulted in the satisfaction of specifications as in the continuous case for a transport aircraft (KC-135) but not for a fighter aircraft (AFTI/F-16). This thesis attempts to extend QFT to the discrete multiple-input, multiple-output (MIMO) problem by utilizing the w' transformation from the discrete z-domain plant. The remainder of the first chapter presents a statement and the scope of the problem, the assumptions made, the approach taken, and the sequence of presentation for the rest of the thesis. Throughout the thesis, the author assumes the reader is familiar with continuous MIMO QFT techniques and, therefore, only difference from the continuous design procedure are noted.