| 摘要 |
PURPOSE:To obtain a true overshoot at all times by building a pulse delay circuit and a deviation counter in a control circuit of a DC motor having a feedback system. CONSTITUTION:When a pulse generating circuit 1 is started by an external start input 11, the pulse generating circuit 1 feeds a pulse to a motor driver 2 rotating a motor M. Here in accordance with rotation of the motor M, a signal is fed to a comparator circuit 5 through a signal detecting circuit 7 and a measuring circuit 6. When a preset reference value is obtained, the pulse generator 1 stops. While an output pulse of the pulse generating circuit 1 is added to a deviation counter 4. Simultaneously, the output pulse of the pulse generating circuit 1 is input to the deviation counter 4 as a subtraction pulse through a pulse delay circuit 3. As the result, a value of the deviation counter 4 shows an overshoot simulating a total unit delay. |
