The invention provides a transfer learning fatigue life calculation method and
system, and the method comprises the steps: obtaining training data, and determining key feature information corresponding to a key cycle number; constructing a training
data set, taking the key feature information as a source domain
data set, and dividing the target domain
data set into the training data set and a
test data set; establishing a main model and an auxiliary model, and sequentially carrying out
coupling cross training on the main model and the auxiliary model by utilizing the source domain data set and the target domain data set; and calculating a difference value between the prediction results of the main model and the auxiliary model, and outputting a minimum training model and a corresponding prediction result when the difference value is smaller than a target difference value. According to the method, the comprehensive model of the main model and the auxiliary model is established, the comprehensive model is high in prediction precision, effectively prevents excessive generalization and is suitable for fatigue life calculation under the
small sample condition, the main model and the auxiliary model are used for
cross training, the training prediction difference value of the main model and the auxiliary model is minimum as the target, repeated iteration training is carried out, and fatigue life calculation is more accurate. And an optimal solution can be obtained.