A new output feedback stabilization controller for the disturbance attenuation of MIMO non-linear systems. (English) Zbl 1194.93183
Summary: In this paper, an output feedback discontinuous controller is proposed for a class of non-linear systems to attenuate the disturbance influence on the system performance. Our main goal is to globally stabilize the non-linear system in the presence of unknown structural system uncertainties and external disturbances. Our approach consists of constructing a high gain non-linear observer to reconstruct the unavailable states, and then design discontinuous controller using a backstepping like design procedure to ensure stability of the non-linear system. The design parameters of the observer and the controller are determined in a complementary manner to ensure stability. As a result the whole system can be stabilized while internal stability of the system states is also ensured. Finally, an example is presented to show the effectiveness of the proposed scheme.
MSC:
| 93D15 | Stabilization of systems by feedback |
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