CAJ | 학술논문

装配过程的误差建模是分析装配误差的重要手段之一。通过分析影响航天器装配结果的尺寸和形位误差、装夹定位误差，将其装配的偏差源分为夹具装夹误差和舱段制造误差两类。并将不同形式的误差通过虚拟夹具的概念进行了统一的表达，进而基于误差流理论针对航天器舱段建立其误差传播的状态空间模型，求出了该过程的状态空间表达式，应用该模型对装配过程中的角偏误差进行了分析。将分析得到的结果同蒙特卡洛仿真的结果进行了比较，两种方法的相对误差小于3％，说明了该方法的可行性。该方法的优势在于它不仅可以分析复杂装配过程，还可以对各工位的装配效果进行观测，从而进行向后分析。
장배과정적오차건모시분석장배오차적중요수단지일。통과분석영향항천기장배결과적척촌화형위오차、장협정위오차，장기장배적편차원분위협구장협오차화창단제조오차량류。병장불동형식적오차통과허의협구적개념진행료통일적표체，진이기우오차류이론침대항천기창단건립기오차전파적상태공간모형，구출료해과정적상태공간표체식，응용해모형대장배과정중적각편오차진행료분석。장분석득도적결과동몽특잡락방진적결과진행료비교，량충방법적상대오차소우3％，설명료해방법적가행성。해방법적우세재우타불부가이분석복잡장배과정，환가이대각공위적장배효과진행관측，종이진행향후분석。
Variation modeling is one of the most important tools for assembly variation analysis.Considering dimension and geometric precision,and part situation precision,the deviation source that affects assembly accuracy is clustered into two types:deviation of geometric location and orientation,variation of geometric form.And these different types of variation or deviation were unified by Virtual Fixture.So a 3D rigid assembly state space modeling technique was developed for stream of variation analysis (SOVA)in multi-station processes.A missile-cabin-assembly process was analyzed in this model.It enhances the applicability in modeling complex assemblies.The developed methodology outperforms the techniques based on other simulations in computation efficiency.It is more powerful not only in forward analysis of complex assembly systems, but also in backward analysis.The model is validated by using Monte Carloseries simulations.