Abstract: It was difficult to afford unified expression and storage for semantic information and
complex topological structure of the cable harness in complex mechatronic products. Aiming at this
problem, a method of expression and stored analysis on complex cable harness information based on
ontology and undirected graph was proposed. A cable harness information integrated model based on
three-dimensional degrees of wiring design, assembly process planning and simulation analysis was
established firstly. Then the expression of cable harness semantic information was enhanced through
the ontology modeling of the model information by using the ontology technology. Finally, divide the
cable harness part into an undirected graph by using a horizontal split algorithm. On this basis, an
adjacency list of undirected graph was built, and the storage and expression of the cable harness
undirected graph in the computer were realized. A certain cable harness part was taken as the
application case to verify the feasibility of this method.

Key words: cable harness, ontology, undirected graph, information integrated model, complex
mechatronic products