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Minimum sensitivity design of linear multivariable feedback control systems by matrix spectral factorization

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1 Author(s)
Bongiorno, Joseph J. ; Polytechnic Institute of Brooklyn, Brooklyn, NY, USA

A scalar measure of system sensitivity to plant parameter variations is employed in the design of linear lumped stationary multivariable feedback control systems. The plant parameters are treated as random variables, and design formulas are derived which lead to systems with the smallest expected value for the chosen scalar sensitivity measure. The design formulas give physically realizable feedback and tandem compensation network transfer function matrices provided the overall system transfer function matrix is properly specified. The solution of the minimum sensitivity design problem is obtained by first solving the multivariable semi-free-configuration Wiener problem.

Published in:

Automatic Control, IEEE Transactions on  (Volume:14 ,  Issue: 6 )