Method and device for measuring the speed or rotational speed, in particular in the case of a hydraulic drive

摘要

Method for determining the actual value of the rotational speed or linear speed of a drive, in particular a hydraulic drive, specifically in particular for use in a digital control loop (closed-loop control circuit), characterised by the use both of the method of pulse counting and of the method of pulse width measurement. The actual values determined on the basis of the two measuring methods are subjected to a decision as to which of the values is output as output actual value.