| 摘要 |
PURPOSE:To enable a stable, high response property and high accuracy feedback control by inserting sample and hold circuits into a speed feedback loop or current feedback loop to control the circuits and by applying the output of a speed control circuit or that of a current control circuit to the sample and hold circuits. CONSTITUTION:The output of a frequency/voltage converter circuit, etc., are applied to a first S/H circuit 15 and the output of the circuit 15 is inputted to a speed control circuit 2. In like manner, the output of a current detection circuit 8 is applied to a second S/H circuit 16. Further, when the response of a PID circuit included in the speed control circuit 2 and current control circuit 3 is slow, the output of the speed control circuit 2 may be applied to a third S/H circuit 17 or that of the current control circuit 3, to a fourth S/H circuit 18. Thus, it is possible to realize the stable, high response property and high accuracy control of a servomotor. |
