| 摘要 |
A position control system of closed-loop configuration in which a position detector is provided on a motor-driven machine element for sensing the position thereof and a rotary encoder is provided on the motor shaft for detecting the rotational speed thereof by producing pulses of a frequency proportional to the rotational speed. The system includes a device for controlling position based on a position detection signal from the position detector and a motor position signal from the rotary encoder, and a device for controlling speed based on a rotational speed signal from the rotary encoder and an output from the position control device.
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