Construction of a product design model based on multi-scenario FBS-QFD

This paper proposes a multi-situational FBS and Quality Function Deployment (QFD) integrated product design requirements model for more accurate product positioning, longer product life and improved product design rationality.A multi-situational FBS-QFD model is constructed to design products by analysing the relationship between the needs of realistic and ambiguous user groups and product functionality.Specific steps: clarify the design objectives, analyse the scenario-structure units of the design objectives, and analyse the mapping relationship between scenario-function-behaviour-structure after building the FBS model.Predicting scenario feasibility, identifying user requirements and translating them into design features.Determine design feature scores and their positive and negative correlations, construct a matrix of user requirements and design feature relationships, derive key design innovation areas and functions, and complete product design solutions.The validation of the model is carried out using rehabilitation products as an example The study shows that the model is scientific and can improve the quality of product design.Provides a theoretical basis and practical strategies for product design decisions