Assembly sequence planning for aircraft based on non-orthogonal interference matrix

Aircraft components assemblies contain many curved features in surface, complex relationships and multiple connects between parts, which make it difficult to design assembly process. A novel assembly sequence planning methodology based on non-orthogonal interference matrix was proposed. By analyzing the features of the part to be assembled, non-orthogonal assembly directs were extracted. The non-orthogonal interference matrixes were established. The method of deriving assembly feasibility was given to realize assembly sequence planning automatically. The sequences were optimized utilizing genetic algorithm, in which assembly time was used as the objective function. The assembly of the aircraft cabin door was simulated based on MATLAB platform. The simulation results indicate that the method implements simply. Assembling ability and efficiency are improved significantly compared to traditional method based on orthogonal interference matrix.