| 摘要 |
PURPOSE:To use a simple detector as an angle detector and to obtain a simple and inexpensive device by forming a signal plate having an optional notch and a detector for electrically detecting the notched part and an unnotched part of the signal plate. CONSTITUTION:A notched plate 21 is formed concentrically with a rotary body and a phototransistor 23 is turned on if light from an LED22 is arrived at the phototransistor 23 or turned off when the light is interrupted by a substance to detect the notched part and the unnotched part electrically. In said constitution, a control device 24 measures the notched range of a master side rotary body and that of a slave side rotary body and outputs a deceleration command to a driver 9 if master side > slave side is formed or an acceleration command in case of master side < slave side to uniform both the speeds. Then, the control device 24 measures the shift between the notched range of the master side rotary body and that of the slave side from a reference position P1 of the master side rotary body and executes the phase-synchronized rotation of the master and slave side rotary bodies by repeating the acceleration/ deceleration of the speeds. |
