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ROBUST SUBOPTIMAL CONTROL OVER MULTICHANNEL OBJECTS UNDER SATURATION CONDITIONS

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A robust suboptimal stabilization algorithm for multiple-input-multiple-output (MIMO) systems with input signal restrictions of amplitude saturation type is considered. The proposed approach uses auxiliary loop method for disturbances compensation together with the optimal control provided by a linear quadratic regulator. The object under control is described by a linear interval model in which the effect of unmeasured bounded external disturbances is taken into account. Interval linearization allows to use the proposed approach in practical testing with Twin Rotor MIMO System laboratory setup. Comparison of obtained results with performance at conventional control approaches demonstrate the lack of overshoot and increase the accuracy of stabilization in the steady state with the proposed algorithm.

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