摘要
在光学自动设计模型中引入机械结构和装配工艺约束,建立了面向装配过程的精密光学系统计算机辅助装调数学模型,探讨了该模型的求解方法。以光学设计软件ZEMAX为基础运算模块,独立开发了数据处理模块、失调量解算模块、优化变量选择模块、方案输出模块,形成了一套完整的面向装配过程的计算机辅助装调软件系统。通过集成产品的结构设计模型并进行数据映射,建立了产品的装调工艺模型,通过对装调工艺参数进行灵敏度和相关性分析,并结合机械结构和装配工艺确定辅助装调优化变量。在实际装调过程中,以系统的像差为评价函数,以灵敏度高、相关性好的装调工艺参数为优化变量,利用计算机强大的计算功能,自动寻找最优的辅助装调工艺参数,定量指导技师的装调。利用该软件对某红外探测光学系统进行辅助装调,该光学系统的传递函数由44.9%提高到64.1%,验证了该方法的有效性和可行性。
Mechanical structure and assembly process constraint was introduced in optics automatic design model,and a assembly process oriented computer aided alignment mathematical model of precision optical system was formulated.Moreover,the solution method to the model was also discussed.Taking optical design software ZEMAX as basic computation module,the data processing module,misadjustment solving module,optimizing variables selection module and scheme output module were developed independently,and then a integrated computer aided alignment software system oriented to assembly process was formulated.The products＇ assembly process model was constructed by integrating the structure design model and mapping data of products.Through analyzing the sensitivity and relativity of assembly process parameter,aided alignment optimization variables were determined by integrating mechanical structure and assembly process.In actual aligning process,the aberration was defined as merit function,so that the assembly process parameters with good sensitivity and complementary for misalignment were selected as optimization variables.By using computer＇s calculation function,the best aided alignment process parameter was automatically found out,which provided quantitative alignment support for technicians.This software was used to assembled an infrared detection optical system whose Modulation Transfer Function（MTF） increased from 44.9% to 64.1%,and illustrated the feasibility and effectiveness of this approach.
出处
《计算机集成制造系统》
EI
CSCD
北大核心
2011年第10期2163-2170,共8页
Computer Integrated Manufacturing Systems
基金
武器装备预研基金资助项目(51318050205)
武器装备预研基金重点资助项目(9140A18010210KG01)~~
关键词
计算机辅助装调
装配过程
光学系统机械结构
装配工艺约束
软件系统
computer aided alignment
assembly process
optical system mechanical structure
assembly process constraint
software system
