| 引用本文: | 李欣,于乃辉,曹玉君,等.基于状态空间模型的航天器装配角偏误差研究.[J].国防科技大学学报,2014,36(1):104-109 ，115.[点击复制] |
| LI Xin,YU Naihui,CAO Yujun,et al.Angular variation analysis of spacecraft assembly based on state space model[J].Journal of National University of Defense Technology,2014,36(1):104-109 ，115[点击复制] |
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| 基于状态空间模型的航天器装配角偏误差研究 |
| 李欣1, 于乃辉1, 曹玉君1, 张志雄2, 尚建忠1 |
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(1. 国防科技大学 机电工程与自动化学院， 湖南 长沙 410073;2.国防科技大学 军事高科技培训学院， 湖南 长沙 410073)
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| 摘要: |
| 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。 |
| 关键词: 虚拟夹具 误差流 状态空间模型 角偏误差 |
| DOI：10.11887/j.cn.201401019 |
| 投稿日期：2013-04-18 |
| 基金项目:国家自然科学基金资助项目（51175505）；国家部委资助项目（51318010406） |
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| Angular variation analysis of spacecraft assembly based on state space model |
| LI Xin1, YU Naihui1, CAO Yujun1, ZHANG Zhixiong2, SHANG Jianzhong1 |
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(1.College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China;2.College of Continuing Education, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| 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. |
| Keywords: virtual fixtures stream of variation state space model angular variation |
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