Principle of Operation Hysteresis Filter In DIAdem

Issue Details

How does the Hysteresis filter work in DIAdem? Is it done like in DIN 45667, or is counting every single cycle with rainflow and delete the small cycles after?

Solution

A value is only counted if the absolute value of the difference between the current value and the previous value is greater than the hysteresis. All other values are not considered further. Thus, DIAdem's function works in the way that DIN 45667 describes.

The first condition is that the value falls into a different class than before. The second condition is the hysteresis. The value is only counted if the difference between the current value (x) and the previous value (y) is greater than the hysteresis. The procedure is therefore the same as in DIN 45667. If values fall within the hysteresis, they are not even considered further.