Connections between conventional and singular-value-based multi-variable flight control system design techniquesIt is proposed that frequency-domain multivariable robustness techniques, when combined with classical multivariable procedures, can offer an additional means of evaluating FCS designs. A lateral-directional FCS for an advanced fighter is used as an example. Robustness to unstructured aircraft-input uncertainties is assessed using purely numerical singular-value procedures. Literal approximations for the singular values of the open-loop plant and controller and for the inverse return difference are shown to provide a means of decomposing and diagnosing robustness problems that are insoluble via purely numerical methods.
Document ID
19870030668
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mcruer, D. T. (Systems Technology, Inc. Hawthorne, CA, United States)
Myers, T. T. (Systems Technology, Inc. Hawthorne, CA, United States)
Thompson, P. M. (California Institute of Technology Pasadena, United States)