Study On Modularize Design And Process Management Of Inspection System For Generalized Defects On Optical Surface

Load capacity is one of the significant indicators of high-power solid laser devices. According to long-term field data and research, it is demonstrated that generalized defects on an optical surface is one of important factors, which have influence on the load capacity. Therefore, to inspect and analyze the generalized defects on an optical surface is the prerequisite to control the quality of an optical component, and thus to enhance load capacity of devices. In this paper, modularization is used to study the design and development of an inspection system for generalized defects on an optical surface.Aiming at project requirements, to use the modularization design method to develop a complex mechatronic measurement and control system is proposed. The system is decomposed into relatively independent function modules and some tools are applied to manage the design process. Therefore, using these methods complexity and uncertainty in system design can be reduced, and confusion in research ideas and non-standardability during development has been avoided.In order to realize the inspection system functions for generalized defects on a precise optical surface, the study focused on the following aspects:①Based on following Axiomatic Design Theory and application of modularization thinking with Design Structure Matrix, the paper introduces a top-down expansion based on overall objectives and through demand analysis, functional analysis, functional modeling, modularization decomposing and solving, a design proposal is suggested. Work Breakdown Structures are applied to represent the overall system design task modules and to control research and development progress.②Through demand analysis and functional modeling, with consideration of function objectives and constraints, the system is divided into three functional subsystems by modularization decomposition for detecting objects. There is the vision subsystem, the motion control subsystem and the image processing and analysis software subsystem.③Based on function requirements and constraints for each model, illumination system, three-dimensional electric control moving workbench and clamping frame are designed. The closed-loop motion control is achieved by implementation of a stepper motor and a linear scale. The defect images are acquired with a CCD, and feature parameters of defects are obtained by image processing techniques. The software subsystem is developed by means of Visual C++2005. As a result, every module is solved.④Finally, the complete system is tested in order to verify the overall performance and fulfillment of the targets it was designed to achieve. Presented is the result, which demonstrated the validity and practicality of the design.