Optimized Selection of Merit Function in Computer-Aided Alignment of Precision Optical System

2017 ◽  
Author(s):  
Luo Yong
Keyword(s):  
Optical System ◽  
Merit Function ◽  
Computer Aided ◽  
Selection Of

scholarly journals Analysis and Optimization of Image Quality Evaluation Function in Computer-aided Alignment of Precision Optical System

2020 ◽  
Vol 14 (6) ◽  
pp. 29
Author(s):  
Yong Luo
Keyword(s):  
Image Quality ◽  
Optical System ◽  
Quality Evaluation ◽  
Direct Selection ◽  
Evaluation Function ◽  
Image Evaluation ◽  
Image Quality Evaluation ◽  
Computer Aided ◽  
The Relationship ◽  
Selection Of

The consistent application of computer-aided alignment technology could surmount aimlessness and significantly shorten the align period of complex optical systems. Wherein, the appropriate system image evaluation function is the primary condition to solve the system misalignment successfully. This paper first establishes the relationship between the amount of misalignment and the system aberration through mathematical modelling and then analyzes the relationship between Zernike coefficient, geometric aberration and system image quality in detail, proposes to construct a system image evaluation system using the idea of Zernike coefficient weighting to solve the problem of numerical instability and imprecision of the solutions caused by the direct selection of Zernike coefficients. Subsequently, the experimental alignment of an infrared optical system was performed using the optical system image quality evaluation method established in this paper. The alignment results showed that the RMS value of the system image quality improved by 24.8% under the same solving algorithm compares to the direct selection of the Zernike coefficient and the weighted Zernike coefficient as the system image quality evaluation function. Therefore, the application of the weighted Zernike coefficient-based optical system image evaluation function proposed in this paper is reasonable, feasible, and effective in the computer-aided alignment process.

Computer-aided selection of a polymer matrix for polyaniline conductive blends

1998 ◽  
Vol 9 (9) ◽  
pp. 563-568 ◽  
Author(s):  
D. Alperstein ◽  
M. Narkis ◽  
M. Zilberman ◽  
A. Siegmann
Keyword(s):  
Polymer Matrix ◽  
Computer Aided ◽  
Selection Of

Enhancing CAD For The Forensic Engineer

1984 ◽  
Vol 2 (1) ◽  
Author(s):  
Lindley Manning
Keyword(s):  
Computer Graphics ◽  
Photographic Evidence ◽  
Computer Aided ◽  
Engineering Drawings ◽  
Forensic Engineering ◽  
Selection Of

The purpose of this paper is to inform the Academy of an application of computer graphics that has been successful in the court room and which has the potential for extension to many related needs of the forensic engineer. An additional purpose is to examine the possibility of cooperation within the Academy to make a broad database and selection of equipment available to the members. Attentive engineers of today are well aware of the growing use and impact of computer-aided drafting, design and analysis in a wide variety of industries. In our field, we are aware of large analysis programs which have been used with success in court, for example the CRASH series. The authors forensic engineering partnership has developed ways to utilize the more widely available drafting systems to inexpensively fill the gap between photographic evidence and full engineering drawings. We have also found that CAD drawings appear to have more impact in court than hand done drawings. In some cases

Translation Technology

2015 ◽  
Author(s):  
Lynne Bowker ◽  
Gloria Corpas Pastor
Keyword(s):  
Professional Competence ◽  
High Quality ◽  
Translation Tools ◽  
Use Of Technology ◽  
Computer Aided ◽  
Increase Productivity ◽  
Selection Of

In today’s market, the use of technology by translators is no longer a luxury but a necessity if they are to meet rising market demands for the quick delivery of high-quality texts in many languages. This chapter describes a selection of computer-aided translation tools, resources, and applications, most commonly employed by translators to help them increase productivity while maintaining high quality in their work. This chapter also considers some of the ways in which translation technology has influenced the practice and the product of translation, as well as translators’ professional competence and their preferences with regard to tools and resources.

Study on computer-aided alignment method of a three-mirror off-axis aspherical optical system

2010 ◽  
Author(s):  
Xi-ting Zhao ◽  
Wen-chun Jiao ◽  
Zhi-bo Liao ◽  
Yun Wang ◽  
Jia-yi Chen
Keyword(s):  
Optical System ◽  
Alignment Method ◽  
Computer Aided

Automated Design of Optimum Belt Drives

1991 ◽  
Author(s):  
Dipendra K. Sinha ◽  
Michael T. McDonald
Keyword(s):  
Computer Aided Design ◽  
Database Management ◽  
Relevant Information ◽  
Automated Design ◽  
Drive System ◽  
Management Systems ◽  
Belt Drives ◽  
Computer Aided ◽  
Aided Design ◽  
Selection Of

Abstract The paper describes a belt design package which works from within a commercial Computer Aided Design and Drafting package (AutoCAD) environment and utilizes FORTRAN programs for design and selection of lowest weight components for the drive system. The components used in the process are available as stock items in U.S.A. The relevant information on these products is stored in commercial database management systems such as EXCEL and LOTUS 1-2-3. Output from the package consists of scaled drawing and tabular specifications.

scholarly journals Production of aromatics from biomass by computer-aided selection of the zeolite catalyst

2020 ◽  
Vol 22 (15) ◽  
pp. 5123-5131 ◽  
Author(s):  
Vicente J. Margarit ◽  
Eva M. Gallego ◽  
Cecilia Paris ◽  
Mercedes Boronat ◽  
Manuel Moliner ◽  
...  
Keyword(s):  
Organic Molecule ◽  
Zeolite Catalyst ◽  
Diels Alder ◽  
Computer Aided ◽  
Selection Of

DS-ITQ-2 has been proposed as catalyst for the Diels–Alder (DA) reaction between 2,5-dimethylfuran and ethylene to produce p-xylene based on the fact that the organic molecule employed for its synthesis mimics the DA intermediate cycloadduct.

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