The use of singular value gradients and optimization techniques to design robust controllers for multiloop systemsA method for designing robust feedback controllers for multiloop systems is presented. Robustness is characterized in terms of the minimum singular value of the system return difference matrix at the plant input. Analytical gradients of the singular values with respect to design variables in the controller are derived. A cumulative measure of the singular values and their gradients with respect to the design variables is used with a numerical optimization technique to increase the system's robustness. Both unconstrained and constrained optimization techniques are evaluated. Numerical results are presented for a two-input/two-output drone flight control system.
Document ID
19830060459
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Newsom, J. R. (NASA Langley Research Center Loads and Aeroelasticity Div., Hampton, VA, United States)
Mukhopadhyay, V. (Joint Institute for Advancement of Flight Sciences Hampton, VA, United States)