数字孪生装配单元建模与质量优化控制框架研究

打开文本图片集

关键词：数字孪生装配单元；精度预测；误差溯源；质量优化中图分类号：TH166文献标志码：ADOI： 10.7652/xjtuxb202605014 文章编号： 0253-987X（2026）05-0142-11

Research on Digital Twin Assembly Cell Modeling and Quality Optimization Control Framework

WANG Rui 1，2 ， ZHOU Guanghui 1，3 ，ZHANG Chao 1，3 ，MA Dongxu1 ， MEN Songchen1，ZOU Yongcheng1 （1.School of Mechanical Engineering，Xi'an Jiaotong University， Xi'an 710049，China; 2. School of Science， Xi'an University of Architecture and Technology，Xi'an 710o55，China; 3. State Key Laboratory for Manufacturing Systems Engineering，Xi'an Jiaotong University，Xi'an 71oo54，China）

Abstract： To address the challnge of ensuring assembly quality for complex products，this study proposes an assembly cell modeling and quality control method that integrates digital twin forward deduction，reverse traceability，and targeted optimization，achieving visual simulation， prediction， and full-process optimization control of assembly quality. First，a three-in-one digital twin assembly cell reference framework consisting of a physical layer， a twin layer，and an application layer was constructed to reveal the dynamic formation mechanism and precise regulation mechanism of assembly quality. A digital twin assembly cell modeling technology which integrates multiple dimensions including manufacturing errors， assembly deformations， and positioning errors was proposed，addressing the inaccuracy issues caused by traditional modeling methods that consider only single error sources. Based on this，an assembly accuracy prediction method using Jacobian matrices and small displacement torsors was studied. A precise error traceability model for key assembly deviation-related processes/processparameters was established. Multi-objective optimization and control technologies for assembly quality deviations were developed，forming a technical system that integrates forward deduction，reverse traceability，and targeted optimization throughout the entire assembly process. A prototype system for a digital twin assembly cell integrating software and hardware was developed and validated in the assembly process of a solid rocket engine nozzle，effectively improving the modeling accuracy and quality optimization control efficiency of the solid rocket engine nozzle assembly process.

Keywords： digital twin assembly cell; accuracy prediction; error traceability; quality optimization

随着复杂产品向复杂化、集成化、精密化等方向发展，其性能指标要求持续提升。（剩余17487字）