Functional architecture generation method based on SysML model

The invention discloses a functional architecture generation method based on a SysML model, and belongs to the technical field of model-based system engineering (MBSE). The method comprises the following steps: constructing a use case and a use case activity according to requirements; constructing a functional structure according to the use case and the object flow in the use case activity; functional groups are divided, and the use case activities in the functional structure are grouped into the corresponding functional groups according to a preset cohesiveness standard; and taking the use case activities divided into the corresponding function groups as function elements, and generating a function architecture in combination with the function structure. Further, on the basis of a task case constructed by SysML, a functional structure is constructed according to the case and an object flow in case activities, the case activities in the functional structure are divided into corresponding functional groups acc