| 摘要 |
PURPOSE:To provide a motor driver circuit without generation vibration and noise even if a motor is used at a high rotation region (1 kpps or higher) using the control by regeneration damping. CONSTITUTION:The title circuit controls the drive of a stepping motor for plotter by inputting the pulse width modulation waveform of input sinusoidal wave to an H bridge 12 and then operating the H bridge 12 and performs the feedback control of the input sinusoidal wave by the feedback loop from the H bridge 12 with an integration circuit 18 for controlling the pulse width modulation waveform. Therefore, the H bridge 12 is connected for regenerative damping and at the same time a capacitor 20 is provided at the downstream position from the integration circuit 18 within a feedback loop. |
