| 摘要 |
A method for determining the fatigue of a pump rotor of a gas turbopump has the following method steps: continuous detection of the rotor rotational speed (n) of the pump rotor, detection of the local rotational-speed maxima and minima of a temporal rotational-speed profile under consideration, association of the rotational-speed maxima and minima with one another to form pairs, detection of a pair fatigue value (L) for each of the rotational-speed pairs, and accumulation of all pair fatigue values (L) to form an overall fatigue value (Ltot). It becomes possible in this way to detect the cycle loading for the pump rotor of a vacuum pump and to incorporate it into the calculation of an overall fatigue value.
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