| 摘要 |
PURPOSE:To repeat the same adjustment by attenuating an input signal by a digital output control signal corresponding to the position of a slider, and driving the slider by an output corresponding to the variation rate of the digital output. CONSTITUTION:When a slider 1 is moved manually, a memory 7 recives a command from a touch signal detecting circuit 13 to read output values of a digital switch 4 corresponding to the position of the slider 1 successively, thereby recording its varying speed successively. On the other hand, the output of the switch 4 is D/A-converted and the attenuation factor of a voltage-controlled attenuator 6 is varied corresponding to the position of the slider 1 to attenuate and output the signal input. For control by the same pattern as the last one, when a control start signal is applied to the memory 7, the memory 7 outputs a command value to a servoamplifier 9. It is then compared with the output of the switch and the result is applied to a motor 3. The same control as the last manual operation output of the switch 4 is performed, and the attenuator 6 attenuates and outputs the input signal with the same pattern as the last one. |
