【摘要】 针对现行以几何量控制为主的装配工艺协调方法所带来的装配精度传递不确定度大、事后强迫校形等问题，对融合真实误差状态的装配协调误差累积传递机理及量化评价方法展开研究。首先，针对航空薄壁结构装配过程中的变形问题，基于柔性配合面符号矩阵，构建柔性装配体误差传递路径模型；其次，结合小位移旋量理论及齐次变换理论，建立初始偏差传递计算矩阵，通过实时获取多物理场耦合偏差值，动态更新装配过程中的偏差传递因子并修正传递计算矩阵，精准计算装配误差；进而，借助稳定性熵函数，建立以装配误差值为主导指标、局部熵值为附加指标的综合评价体系，实现薄壁表面误差累积状态的精确评估；最后，以翼盒结构为例开展验证，结果表明该方法可有效提升装配质量。更多还原

【Abstract】 For the problems such as high uncertainty in assembly accuracy transmission and post-assembly forced alignment by the current assembly coordination methods that are mainly based on geometric quantity control, this study investigates the cumulative transmission mechanism and quantitative evaluation methods of assembly coordination errors that incorporate the practical error state. Firstly, the deformation during the assembly process of aeronautical thinwalled parts was analyzed, and an error transmission path model for flexible assemblies was constructed based on the symbolic matrix of flexible mating surfaces. Secondly, based on the small displacement torsor theory and homogeneous transformation theory, an initial deviation transmission calculation matrix was constructed. By obtaining the multi-physical field coupling deviation in real-time, the deviation transmission factors were dynamically updated during the assembly process and the transmission calculation matrix was corrected to accurately calculate the assembly error. Furthermore, with the help of the stability entropy function, a comprehensive evaluation system was established with the assembly error value as the leading indicator, and the local entropy value as the additional indicator, and the accurate evaluation of the cumulative error state on the thin-wall surface could be achieved. Finally, a wing-box structure was taken as an example for verification, and the improvement of the assembly quality was achieved significantly.更多还原