| 摘要 |
<p>PROBLEM TO BE SOLVED: To monitor the motion stroke of the constituent member without any danger of being caught. SOLUTION: This is a method for monitoring the motion stroke of the constituent member which can be moved by a driving device 13 toward at least one end position; and at least one time span corresponding to a selectable rotational frequency of a driving shaft 14 and evaluated, and a scale for the motion behavior of the constituent member is provided. Then at least one time span corresponding to the selectable rotational frequency of the driving shaft 14 is measured right after the driving device starts. Then this time span is stored intermediately when the minimum selectable rotational frequency is applied to the driving shaft 14, a time span corresponding to the selectable rotational frequency of the driving shaft 14 is newly measured when the driving device 13 starts next time and compared with the intermediately stored time span, and when intermediately stored time span is a selectable value larger, the driving device 13 is stopped or reversed.</p> |
