This paper clarifies numerically and experimentally the characteristics of residual vibrations caused by the natural frequency variation for a positioning mechanism, such that a load modeled as a one-degree-of-freedom vibratory system is driven by a servomotor. Moreover, a multi-design-point method is proposed, which can reduce residual vibrations over a comparatively wide range of parameter variations. It is also shown that this method enables high-speed and accurate positioning for a serial printer carriage.

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