駆動電流制御による直流モータの騒音抑制

概要

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This study is concerned with the noise reduction of the DC Motor. We added a stable power supply to DC Motor, but complicated vibration occurs for the driving current by the brush. The wave in the electric current causes the noise. Hence, it is thought that we can reduce the noise of the motor by controlling a current wave. In this study, we generate the signal which reversed the phase of the current waveform as a control signal, and try noise reduction by adding it to the power supply voltage. As a method to generate a control signal, we suggested the technique how I used FFT and the thing which referred to a past current value. In this paper, we report about simulation and the result that we experimented on each method. In conclusion, we obtain that the control which we used a past current value was effective for noise reduction.