Robust integral controller design based on composite nonlinear feedback in uncertain systems with constrained inputs and external disturbances. (English) Zbl 1531.93061
Summary: In this article, to enhance the transient performances in constrained uncertain systems, a control technique based on linear matrix inequality (LMI) is characterized to the robust integral composite nonlinear feedback (CNF) controller design. To achieve this aim, considering the inputs limitations and the uncertainties, the regulation is transformed into a minimization subjected to several LMIs. Solving an optimization in real-time, the gains of the controller are calculated. So, the regulation and the disturbance rejection are effectively handled employing the presented control law. Compared with the existing integral methodology, the provided simulations validate the applicability of the robust integral CNF control law in uncertain systems.
© 2023 John Wiley & Sons Ltd.
© 2023 John Wiley & Sons Ltd.
MSC:
| 93B35 | Sensitivity (robustness) |
| 93B52 | Feedback control |
| 93C10 | Nonlinear systems in control theory |
| 93C73 | Perturbations in control/observation systems |
| 93C41 | Control/observation systems with incomplete information |
Keywords:
composite nonlinear feedback; input saturation; integral control; linear matrix inequality; robust controlReferences:
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