共查询到19条相似文献,搜索用时 75 毫秒
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目的研究市场上现有的民用机箱,以此为参照对象进行创新,从而改良现有电脑机箱空间浪费和不能自选配置的问题,同时增强消费者的购买欲。方法对机箱进行TRIZ理论分析,找出机箱设计冲突,如机箱空间浪费和用户不能自主配置的问题。根据现有的冲突,在TRIZ理论中找出对应的3个解决原理,分别为分割原理、动态化原理、抛弃与修复原理,用以解决电脑机箱存在的问题。结论通过运用TRIZ理论,提出舍弃被用户淘汰不用的组件位置,分割机箱功能组件,从而使机箱模块化、动态化的改进方案,同时设计出一款可拆卸拼装、利于维修、满足用户需求的创新型机箱。在节省机箱空间的前提下,改变传统机箱在拼装后固有的静止状态,使机箱实现模块化、动态化的自主拼装。 相似文献
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机箱作为电子设备一个重要的基础结构,其结构形式随着电子技术的不断发展而发展,当今的机箱已朝着小型化、积木化、人性化方向发展。另一方面,由于电子设备使用的范围不断扩大,其所处的环境愈来愈复杂(舰船、车载、机载、地下、海中等),因此对机箱又提出了很多特殊的要求。文章介绍了一种新颖便携式机箱的结构设计,分别从机箱的设计、电磁兼容设计、抗振动与抗冲击设计、热设计及三防技术五个方面阐述了便携式机箱的设计新技术及实际应用,并结合设计情况提出了一些建议。 相似文献
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《中国测试》2017,(6):99-102
机箱装配具有部位多、标准件类型复杂等特点,实现机箱标准件装配质量评价,模式识别是关键。该文提出类间均衡树(KB-BBT)机器评价系统结构,首先,提出可实现不同评价标准的机箱标准件装配质量机器评价方法;其次,结合机箱具有固件三大类标准件的特点,构建3个SVM分类器,实现漏装配与机箱功能件、机箱钣金件、机箱紧固件三标准件大类的模式识别;最后,应用均衡树(BBT)结构,实现各大类标准件类内不同零部件模式的识别。经具有15种、204个的机箱标准件样本集实验,结果表明:KB-BBT结构能使SVM分类器最高识别准确率达到100.0%,比BBT结构提升7%,KB-BBT统结构从顶层区分三大类标准件,具有分类识别准确率高、分类器训练简单的特点。 相似文献
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机箱设计作为电子设备结构设计的主要内容,已经成为实现设备技术指标的重要环节。这篇文章介绍了一种新颖便携式机箱的结构设计,分别从机箱的设计、电磁兼容设计、抗振动与抗冲击设计、热设计及三防技术五个方面阐述了便携式机箱的设计新技术及实际应用,并结合设计情况提出了一些建议。 相似文献
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插板式密封机箱可有效提高电子设备的可靠性,提高设备的集成度和通用性。其直接的不良后果是耗散热量在增加,散热效率在降低。针对大功率散热的插板式密封机箱,通过特殊的导热设计,选用低热阻导热脂等方法进行热设计。并使用热仿真软件进行分析和优化设计。最后通过高温环境实验对热设计进行验证,对于大功率插板式密封机箱的热设计具有一定的借鉴意义。 相似文献
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全息激光防护薄膜的研制 总被引:2,自引:0,他引:2
介绍了全息激光防护薄膜基本理论和设计方法。研制成功的全息激光防护薄膜,其光学性能测试表明:0.53μm波长激光的光密度D达4.11,防护角达15°,具有良好的可见光透过率,且抗激光破坏能力强,可用于人眼和光电探测系统的激光防护。 相似文献
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Quality Improvement of an Injection-Molded Product Using Design of Experiments: A Case Study 总被引:1,自引:0,他引:1
This paper was originated by a problem that occurred in an injection-molding project. The mold design team reported that the machine produced excessive flash on the molded part, the Bulldog, of Kettering University's mascot. The investigation of the manufacturing process problem required the understanding of many factors that influenced excessive flashing. After discussion and input from the team, a simple four-factor full-factorial design with duplicate measurements was used for the experiment. The analysis revealed that factors A (pack pressure), C (injection speed), and D (screw RPM) and also the interactions AC and CD were significant. The settings for A, C, and D were obtained. The confirmation runs showed that the setting of A at low level (150 psi), C at low level (0.5 in./sec), and D at high level (200 rpm) produced Bulldogs with zero flash. 相似文献
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通过对NHK弹簧扁钢的质量合格率的统计分析,发现主要有刮伤、翘皮、弯曲三种质量缺陷,按工艺流程对生产各工序容易产生的质量缺陷进行了分析,并结合生产实际提出了相应的解决方法。 相似文献
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Norman P. Bresky 《技术计量学》2013,55(3):340-341
In developing quality-control procedures, a step-loss function has been used implicitly or explicitly to describe consumer perceptions about product quality. A quadratic loss function has been suggested by Taguchi as an alternative to the step-loss function in measuring the loss due to imperfect product quality (cost of acceptance). In this article, Bayesian analyses of the known-standard-deviation acceptance-sampling problem are described for both the step and quadratic loss functions with three cost components—cost of inspection, cost of acceptance, and cost of rejection. A normal prior distribution is used for the lot mean. Efficient procedures for finding minimum expected cost procedures are given. For a particular example, comparisons are made of how optimal sampling plans and costs computed under the two cost structures change as the form of the prior distribution and misspecification of its mean and variance are varied. Sensitivity analyses for both cost functions show that the optimal sampling plan is robust with respect to the form of the prior distribution, as well as to misspecification of its mean and variance, if the tail specification reasonably approximates that of a normal distribution. 相似文献
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V. I. Gulyaev V. V. Gaidaichuk I. L. Solov’ev L. V. Glovach 《Strength of Materials》2007,39(5):492-501
On the basis of the statement and solution of direct and inverse problems of statics of flexible curvilinear rods, we study
the stress-strain state of drill strings for deep drilling in a curvilinear well with given geometric parameters. We deduce
the resolving equations aimed at the evaluation of the internal forces and moments in a drill string, the forces of contact
interaction, and the friction forces between the wall of the well and the drill string in the processes of its lifting, lowering,
and rotation. A procedure for the solution of these equations is proposed. An example is presented for a drill string of curvilinear
shape.
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Translated from Problemy Prochnosti, No. 5, pp. 55–67, September–October, 2007. 相似文献
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数字影像取代传统影像是以数字技术的发展为前提的,数字技术对传统技术的冲击带来了数字影像技术发展壮大的同时,也引出了影像科学理论上的新问题。如何对数字影像质量,尤其是技术质量进行科学的评价和界定,在目前的理论界有着非常重要的意义。本文从影调再现、细部再现、彩色再现三个方面对数字影像的技术质量进行了较为系统的梳理和分析。 相似文献