Barreiras de robustez e técnicas no domínio da frequência em sistemas multivariáveis

Abstract

This text aims to present some frequency domain technique and robustness bounds for multi variable systems, using SVD (Singular Value Decomposition) approach, considering that Bode Plots have not much to do with MIMO systems. In order to validate the techniques, a LQR controller with output feedback was designed for a F-16 aircraft’s lateral flight dynamics and the analysis was performed with time and frequency domain approaches, evaluating system specifications, such as, steady-state error, overshoot, settling time and rising time. In a sense, the designed controller balanced the system’s singular values at DC, ensured suitable time domain response, good robustness for the case of disturbances and validated the multi variable techniques presented in this work