Kk. Shyu et al., Decentralized dynamic output feedback controllers for interconnected systems with mismatched uncertainties using new sliding mode control, INT J SYST, 31(8), 2000, pp. 1011-1020
This paper presents a method for the design of decentralized output feedbac
k controllers for an interconnected systems with mismatched uncertainties u
sing a variable-structure control approach. A new reaching condition of the
sliding mode is derived such that the reduced-order system is invariant to
the mismatched uncertainties. In every subsystem, a new idea for a sliding
mode that consists of two sets of switching surfaces is introduced, and a
scheme of decentralized dynamic control using only output states is also pr
oposed. This scheme can guarantee closed-loop stability of a sliding manifo
ld of the composite system. Finally, a numerical example is given to illust
rate the controller design method.