| 摘要 |
PURPOSE:To achieve a high response control, by dividing the frequency of an encoder pulse signal into optimal number of frequencies corresponding to the rotary speed of a DC motor, and employing the frequency divided signals as an encoder remote measurement signal and an interruption signal. CONSTITUTION:A-phase encoder pulse ENCA is fed to a flipflop circuit 13 provided with a clear function and the clock input terminal CK of a binary counter 14. CPU1 makes an interruption processing based on an output fed from the flipflop circuit 13 then reads out a count from the binary counter 14 to measure the internal of the encoder pulse and resets FF circuit 13. Upon finish of interruption processing, FF circuit 13 is released. Consequently, high response control can be achieved. |
