Production line process knowledge evolution method and system

The invention belongs to the technical field of intelligent manufacturing, and particularly provides a production line process knowledge evolution method and system, and the method comprises the following steps: obtaining process knowledge from a process knowledge source, representing the obtained process knowledge through employing an ontology modeling technology, and constructing a hierarchical representation model of the process knowledge; process route data sets of different production tasks and process parameter data sets of different production processes are used as input, process route evolution, process parameter evolution and process case integration are implemented in sequence based on a process knowledge evolution target, and intelligent generation of process knowledge is realized; and storing process knowledge formed in the whole evolution process into a process knowledge base. Layered representation is carried out on the process knowledge, a standardized process knowledge representation model is