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Frequency Response Data-based Multiple Peak Filter Design Applied to High-Precision Stage in Translation and Pitching

Tuning of feedback controllers in high-precision stages needs a lot of time and skills. In particular, multiple filter design for multi-input multi-output systems is difficult because of a large number of controller parameters in each axis and a coupling problem between each axis. In this study, the frequency response data-based multiple peak filter design method is proposed to reduce the error. The multiple peak filters are designed by convex optimization with the objective function to reduce the error. The effectiveness of the proposed method is validated in the simulated data of the two-degree-of-freedom high-precision stage in translation and pitching.