In this paper, the stability of the reduced order minimal controller synthesis (ROMCS) algorithm is investigated by comparative robustness tests. Both, ROMCS control and the proportional plus integral (P +1) controller are implemented in the case of aluminium alloy specimens of 10 mm diameter. Three other different specimens are controlled under the same controller implementations. Hence, the unmodelled dynamics and disturbances are introduced as a natural consequence of these test conditions.
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