GERT analysis of a single conveyor system†

Graphical Evaluation and Review Technique (GERT) has been applied to the analysis of the discrete conveyor model for service time distributions which are general but bounded and where there is no storage at work stations and no recirculation. The model is described by states with the Markovian property. The GERT analysis gives a visual representation of the conveyor system and useful information in the conveyor system design.     

Modeling and Simulation of Resistive Superconducting Fault-Current Limiters

Superconducting fault-current limiters (SFCL) offer ideal performance in electrical power system. The design of SFCL has to be both flexible, to allow an easy adaptation to the specific requirements of each particular application, and a high quality standard with reproducible properties. Up to now no simulation model of SFCL has been validated or introduced in the Library of MATLAB software. In this paper a simulation model for a novel resistive type superconducting fault-current limiter is proposed. This model includes the electric field-current density (E?CJ) characteristics of High-Temperature Superconductors (HTS). A?graphical interface using Graphical User Interface (GUI) of MATLAB is developed in order to ease the operation of the proposed model. This one facilitates the introduction or the parameter modification of materials candidate to a SFCL model. Thus, the operation characteristics and limitation behavior of SFCL have been investigated. The developed model accurately predicted the current-time waveforms achievable with typical limiters, and improved standard of understanding concerning the fault-current limitation mechanisms.     

A knowledge-based advisory system for statistical quality control

Implementation of an effective quality management system requires the ready availability of expert statistical quality control (SQC) practitioners. However, this expertise may be unavailable to many small- and medium-size manufacturing organizations. Knowledge-based systems (KBS) can be used to make SQC expertise easily available to these organizations. This paper describes a KBS that has been developed for providing assistance in: (1) the selection and design of appropriate quality control charts; (2) the process monitoring analyses; and (3) providing corrective advice based on the monitoring analyses results. The KBS runs on a microcomputer and has been developed using a commercially available development shell.     

汽车光电定位测量系统

本文介绍了一个光电系统,它利用汽车外轮廓来测量汽车在检测线上的方位。用6个CCD器件来确定汽车的轮廓位置,用IBM PC/XT微型机完成数据采集和处理,以CCD的固有分辨率确定汽车的轮廓位置,最后计算出汽车实际轮廓中心线相对理想中心线的偏转角。     

PACIES A PArt Code Identification Expert System

This paper discusses an Expert System to generate part codes for the selection of small part feeding and orienting devices for use in automatic assembly. The PACIES system embodies the specific knowledge and experience of human experts to determine a part code consistent with the UMASS coding system to facilitate the handling and orienting of small parts for use in automatic assembly. The system is implemented on an IBM/PC class microcomputer running MS-DOS using the micro-PROLOG programming language, and consists of a rule set containing 163 rules.     

Data storage gets to the point

Could a system that is basically mechanical, albeit micromechanical, compete with electronic and magnetic devices for storing large volumes of data? Surprisingly, recent research suggests that the answer may be yes. Stranger still, the concept being investigated by IBM and others is not too far removed from that of the phonograph and record player, the once familiar system used for writing and retrieving data to and from revolving disks. But the scale of the once familiar pick-up needle compared with what is now proposed is as an ocean compared with a drop.In the new ultra-compact system for storing digital data developed by IBM researchers, patterns on the surface of a material are traced by points so fine that the impression left by one of them would be one fifty-thousandth the size of the full stop at the end of this sentence. Using technology first developed as the atomic force microscope (AFM) to trace topography down to the scale of individual atoms and molecules can, say IBM researchers, enable data to be stored at densities as high as 1 Tb/in² — a density ten times higher than today’s most advanced disk drives.     

A hospital-based digital computer system for research and clinical applications

A computer system is described that has been designed for use in both a research and a clinical environment. The system utilizes a small computer (PDP/8) capable of being used autonomously, but also able to function as a satellite of a larger, more fully equipped machine (IBM 1800). Such a system has the advantage of making available to the inexperienced user a small relatively simple to use machine, while at the same time providing access to a more sophisticated system when the need arises. The low cost of the satellite computer makes it possible for each investigator to have his own computer (eliminating scheduling problems) and makes it economically feasible to commit a computer to a single, routine clinical task.     

A microcomputer-based system for measuring excitation functions with good energy resolution

A system is described which removes time dependent energy fluctuations from a proton beam incident on solid targets. Operating under microcomputer control, this system permits automatic measurement of extended (several MeV) excitation functions with very good energy resolution ( 300 eV FWHM) for thin solid targets. The long-term energy stability of this system has been measured to be 0.0003%/h at E_p = 2.0 MeV, with a short-term energy spread of σ = 5 eV.     

远程分布式多LED显示屏控制系统研究

综合单片机、网络通信技术、远程视频技术,提出了一种基于RS-485总线的主从分布式远程LED显示屏控制系统,可实现对多显示屏的远程监控及显示内容的动态刷新,并可将显示内容在PC机上进行预览.介绍了该系统的总体设计方案、软硬件构成,并详细阐述了多LED显示屏的远程通信原理及实现方法.     

工业炸药裹包装置上翻包机构的图解法设计

使用图解法对工业炸药中包包装线上裹包装置中的翻包机构进行了设计。在介绍了问题的背景后,使用图解法首先确定气缸的行程及其规格,然后通过从一边试探的方式,三次试探就得到了问题的解答。研究表明,这种图解法对该类带气缸的连杆机构设计具有普遍的借鉴意义。     

分布式控制系统的主从式RS—485多机通信

本文阐述了分布式控制系统的RS—485主从式多机通信原理和实现方案,介绍了RS—485串行通信接口标准和转换电路,说明了8031单片机系统RS—485多机通信的软硬件设计方法．     

弯板拱桥曲厚壳元分析及其试验研究

本文首次提出了弯板拱桥的曲厚壳元分析方法,通过与三维实体单元的分析结果及试验实测值进行比较,说明用曲厚壳元分析弯板拱是切实可行的,完全可以代替三维实体单元的分析方法,而且用微机就可解决问题。     

A Microcomputer Fitted Method for Determination of the True ODF of Hexagonal Materials according to the Maximum-Entropy Estimate

A method which is especially suitable for microcomputer calculation of the true orientation distribution function(ODF) according to the maximum-entropy estimate is proposed for hexagonal system polycrystalline materialswith physical symmetry.The resultant computational software system has been also designed and first carried outin a microcomputer PANAFACOM-U1200 being on line with the X-ray diffractometer D/max-3A.The simu-lated calculation shows that the method is concisely pragmatic and easily popularized,while the results obtainedare trust worthy.     

Metallization of plastics by magnetron sputtering for application of membrane switching

A water cooled magnetron sputtering system has been successfully applied to the deposition of silver onto thin thermally fragile Mylar sheets. The sheets were stencil masked to provide a pattern of row and column conductors in a 64-cell membrane switch array which was intended for use in a microcomputer based aid for the handicapped. The specification for such a microcomputer scanned keyboard matrix is outlined and the design details given for a back-illuminated array of cross point switches. Test results indicate that the technique is potentially suitable for the production of low-profile, high reliability keyboards and other low resistivity flexible conductor applications.     

基于AT89C52单片机温度测控系统的硬件设计

本文介绍了基于AT89C52单片机的温度测控系统的硬件设计。该系统采用DS18820进行温度采集,通过AT89C52单片机外围电路来实现温度的设定、显示以及报警。该温度测控系统测温范围为-55℃＋125℃,它具有读数方便、测温范围广、测温准确等优点,被广泛运用于工业生产、日常生活中。     

GUI-Based DL-Network Designer for KISTI’s Supercomputer Users

With the increase in research on AI (Artificial Intelligence), the importance of DL (Deep Learning) in various fields, such as materials, biotechnology, genomes, and new drugs, is increasing significantly, thereby increasing the number of deep-learning framework users. However, to design a deep neural network, a considerable understanding of the framework is required. To solve this problem, a GUI (Graphical User Interface)-based DNN (Deep Neural Network) design tool is being actively researched and developed. The GUI-based DNN design tool can design DNNs quickly and easily. However, the existing GUI-based DNN design tool has certain limitations such as poor usability, framework dependency, and difficulty encountered in changing GUI components. In this study, a deep learning algorithm that solves the problem of poor usability was developed using a template to increase the accessibility for users. Moreover, the proposed tool was developed to save and share only the necessary parts for quick operation. To solve the framework dependency, we applied ONNX (Open Neural Network Exchange), which is an exchange standard for neural networks, and configured it such that DNNs designed with the existing deep-learning framework can be imported. Finally, to address the difficulty encountered in changing GUI components, we defined and developed the JSON format to quickly respond to version updates. The developed DL neural network designer was validated by running it with KISTI’s supercomputer-based AI Studio.     

Imaging techniques for cable network structures

Imaging techniques are presented for developing interactive computer display of cable network structures on a microcomputer such as the IBM PS/2®. These structures create surfaces formed by an orthogonal mesh of cables and are primarily loaded normal to the surface. A three-dimensional perspective representation of network structures is developed for fast drawing of cable structures on microcomputers.     

CPLD与单片机在超压存储测试系统中的应用

本文研究了基于复杂可编程逻辑器件(CPLD)和单片机技术的爆炸冲击波超压存储测试系统,该系统选用8bA／D转换器,由单片机和CPLD组成的双控制器对数据进行高速采样存储．设计中综合了单片机在控制、通信及使用灵活性等方面的优点和CPLD的高速性和高可靠性,以完成系统总体的设计要求．文中介绍了系统的组成以及CPLD与单片机控制模块完成的功能和设计思路,并给出时序仿真图．最后,给出了系统调试结果,证明系统设计方案的可行性．