A sliding mode technique for reconstruction of unknown control input in linear systems
The unknown input estimation problem for linear dynamic systems exposed to the disturbances is studied in the paper. A novel approach to designing sliding mode observer is suggested for systems not satisfying matching, minimum phase, and detectability conditions. To apply this approach, the reduced-order model of the original system is used. Such a model allows to reduce the dimension of the sliding mode observer, besides the restrictions placed on the original system are relaxed.
CYBERNETICS AND PHYSICS, VOL. 12, NO. 1, 2023, 82–88