Research on the Expression Method of Customer Requirement Information for Customized Complex Heavy Equipment Products

• 1、Institute of Manufacturing Engineering, State Key Laboratory of Mechanical Transmission, School of Mechanical Engineering, Chongqing University
• 2、China National Heavy Machinery Research Institute Co,Ltd.

Abstract：Aiming at the problem of information expression errors and incompleteness caused by the requirements of complex and heavy equipment users and differences in user knowledge, a method for modeling the needs of single-piece small batch customers is proposed, and the requirements are classified and described in terms of function, performance, structure, safety and cost And to obtain the weight of customer needs;On this basis, the customer requirement model is constructed to complete the classification of requirement constraints. Use the validation tree to check the consistency of customer requirements to resolve the related attribute conflicts and contradictions. Use fuzzy rough set to complete the missing information of customers' requirements, and solve the problem of incomplete and invalid user information. Finally, the feasibility and effectiveness of the proposed theory and method are verified by taking the customer requirements of large extruder as an example.

Keywords： requirementexpression complex heavy equipment consistency check rationalityofrequirementexpression