关键词: 性能稳健指数, 产品族, 稳健设计, 参数化, 产品设计

Abstract: Aiming at the performance robustness problem in product family owing to the stochastic variation of design parameters, a method for robust optimization design of product family was developed based on the performance robustness index. To measure the robustness of design, the concept and calculation of performance robustness index were presented focusing on the subject of interval parameters. Based on above foundations, the platform parameters were selected by analyzing the sensitivity of the design parameters firstly. Then, the fuzzy c-means clustering algorithm was applied to determine the sharing strategy of platform parameters by clustering the performance variation. Finally, taking the performance robustness index as constraint, the robust optimization model was constructed to enhance the robustness of real products. The feasibility and effectiveness of proposed approach were demonstrated by the robust optimization design of universal motor families.

Key words: performance robustness index, product family, robust design, parameterization, product design