標準SN比を用いた高速・高精度用紙搬送技術の開発

抄録

The two-step design strategy of quality engineering was used to develop a high speed and high accuracy paper feeding system for a printer, first by using the standard signal-to-noise ratio to improve the stability of the basic mechanical driving system, then tuning the control system. Specifically, the stability of the mechanical driving system was evaluated by using the current waveform obtained when a step response waveform was supplied to the DC motor as the characteristic value. Experiments and analysis were carried out with friction load torque as a noise factor and with control factors assigned to an L18 orthogonal array. The results showed an improvement in the robustness of the mechanical driving system under the optimum conditions, compared to other conditions. Then a control unit was connected and control stability was evaluated,showing that control had become more stable and variations in linefeed time and linefeed accuracy had been reduced. Using the standard signal-to-noise ratio to improve system functionality led to substantial functional improvement and a reduction in development time.