| 摘要 |
PROBLEM TO BE SOLVED: To detect the generation of shock positively and easily by automatic detection without preparing a conventional vibration detector or the like by detecting whether start shock or stop shock is generated from the output change of a speed control system at the time of starting elevation control of an elevator car or stopping it. SOLUTION: Whether or not a shock is generated at the time of starting elevation control of an elevator car or stopping it is detected from the output change of a speed control system, and the peak value of a torque current command IP1 from a speed control amplifier 4 in a certain speed range at the time of starting control is stored in a peak holding part 21. A judging part 22 judges the generation of start shock when the peak value exceeds a start shock judgment level PI2 . The case of detecting from the difference between the maximum value and the minimum value is also included depending on a control device. The generation of stop shock is detected from the difference at the time of stop. The case of remote-adjusting a constant of a gain or the like of the control device from the detection of shock generation is also included. |
