The invention provides a multi-heat-source multi-material additive manufacturing optimization method and
system based on
machine learning, and relates to the field of additive manufacturing, and the method comprises the following steps: collecting process parameters, material physical properties and
target response data in real time, and constructing a multi-
source data set; on the basis, a multi-
task learning model is trained, common features are extracted, target responses are synchronously predicted, a proxy target function is constructed through predicted values, if errors exceed a threshold value, experimental
verification is conducted, and new data is fed back to update the model. And applying the
weight coefficient to a multi-objective
evolutionary algorithm, iteratively screening a Pareto candidate solution set, verifying a high-uncertainty solution, and updating the model to error convergence. And selecting and deploying an optimal parameter combination by using an entropy weight-
TOPSIS method, and embedding an
online learning mechanism to form closed-
loop optimization. According to the method, multi-
task learning and a self-adaptive
evolutionary algorithm are combined, and efficient optimization of multi-heat-source multi-material additive manufacturing process parameters can be achieved.