| 摘要 |
PURPOSE:To provide an automatic door controller with a simple structure, which can accurately and securely control a door. CONSTITUTION:A motor 20 drive is reduced by a reducer 5 to drive a driving pulley 16. And this driving power drives a driven pulley 15. An encoder circuit 19 equipped on the driven pulley 15 outputs pulse signals according to the driving speed and the driving direction of the driven pulley 15 to a controller 500. The controller 500 detects directly the moving speed, the moving direction and the present position of the door 10 from the input signals. The controller 500 controls the current conduction time of the motor 20 on the basis of the detected result to control the door so as to coincide with the preset transfer speed of the door 10. |
