Method and device for calculating the speed, in particular the turning speed of a rotating machine element

摘要

The method involves detecting distance elements spaced from each other and considering time supplied by a time or a pulse generator (6). The detection of the speed takes place in a speed area above a limiting speed after a frequency measuring process and takes place in the speed area below the limiting speed after a time measuring process. An independent claim is included for a device for determining the speed, particularly speed of a rotating machine element.