The simple multi-period repetitive control system was proposed by Yamada et al. in order to specify the input-output characteristic and the disturbance attenuation characteristic more easily than the multi-period repetitive control system. In addition, Yamada et al. clarified the parameterization of all stabilizing simple multi-period repetitive controllers. Recently, Sakanushi et al. proposed the parameterization of all robust stabilizing simple multi-period repetitive controllers for multiple-input/multiple-output time-delay plants with uncertainty. However, using their method, it is complex to specify the low-pass filter in the internal model for the periodic reference input of which the role is to specify the input-output characteristic. Because, the low-pass filter is related to three free parameters in the parameterization. To specify the input-output characteristic easily, this paper proposes the parameterization of all robust stabilizing simple multi-period repetitive controllers for multiple-input/multiple-output time-delay plants with specified input-output characteristic such that the input-output characteristic can be specified beforehand.
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