Vehicle conceptual assembly variation analysis system

Assembly success requires an integrated view of assembly sequence, joint configuration, and tolerance fields setting. As a result of incompleteness and uncertainty of design information, it needs to introduce qualitative analysis and reasoning into quantitative methods to help and instruct designers in the project conceptual design stage. A proposed framework for vehicle conceptual assembly design system is presented in the paper. The heuristic algorithm is improved to increase efficiency such as uncertainty presentation in qualitative analysis, fuzzy inferring, and qualitative reasoning of uncertainty knowledge. Some continuous improvement in knowledge-based system is used to help assembly solution generation and greatly increase analysis efficiency. Practical application is broadened to perfect the quantitative and qualitative simulation program. The research will help to construct the big and uniform platform of vehicle body digital concurrent design.

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