Process for the adaptive actual-value correction in fatigue strength tests

Abstract

A process is provided for the adaptive actual-value correction during fatigue strength tests in which a deviation of the actual value from the desired value is determined and by means of a change of the desired-value indication to a desired correction value, the actual value can be controlled in the direction of the real desired value. To minimize problems with errors and test time length, signals which correspond to the desired value and the actual value are separated into in each case at least one individual event which are each defined by two reversal points and are described by (i) a first load measurement in the first reversal point, (ii) a second load measurement in the second reversal point, (iii) a time interval between the reversal points and the points in time of the reversal points, and (iv) characteristic form of the connection curve between the two reversal points, or a comparison is made of the individual events of the desired values and the actual values, the new desired correction values are formed which are then used for the control instead of the previous desired values, in the next return period.

Dependencies are inferred from the claim text.