| 摘要 |
PURPOSE:To change the speed of a controlling motor automatically according to controlled variable of angle, distance, etc. and thus to make a controlled unit operate stably by changing a power voltage of the controlling motor according to the value of a deviation voltage. CONSTITUTION:When voltage V0 is changed by a voltage regulator 11, there arises a difference between it and a voltage V1 of a controlled side voltage regulator 12, a difference signal is obtainable through a voltage comparator 13, and the deviation output is impressed on a motor driving circuit 15 to keep a motor 17 running until the voltages V0 and V1 become identical with each other. Then, the voltage V0 and V1 are also applied on an amplifier 14, and a power voltage regulating circuit 16 is driven by the deviation signal. And an arrangement is such that when an output of the amplification circuit 14 is large, an output of the voltage regulating circuit 16 is made large and a speed of the motor is also made high; when the amplifier output is small, the output of the voltage regulating circuit 16 is made small and the motor speed is also made low. |
