| 摘要 |
A process is disclosed for monitoring the path of displacement of a part that can be moved by a drive towards at least one end position. At least one period of time that corresponds to a selectable number of rotations of a driving shaft is measured, evaluated and provides a criterion for evaluating the displacement of the part. According to the invention, at least one period of time that corresponds to a selectable number of rotations of the driving shaft is measured as soon as the drive is started, this period of time is temporarily stored when the driving shaft has completed a selectable minimum number of rotations and next time the drive is started the period of time that corresponds to the selectable number of rotations of the driving shaft is measured again and compared with the temporarily stored period of time. When the measured period of time exceeds the temporarily stored period of time by a selectable value, the drive is stopped or reversed. |
