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本文讨论了建立标准的功能和作用的意义和要求,分析了功能和作用的内涵,深入讨论了研究标准功能和作用的价值,研究提炼了标准的五个功能,研究提炼了标准九个作用,深入讨论了标准的功能和作用的特点和关系。 相似文献
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本文讨论了建立标准的功能和作用的意义和要求,分析了功能和作用的内涵,深入讨论了研究标准功能和作用的价值,研究提炼了标准的5个功能,研究提炼了标准9个作用,深入讨论了标准的功能和作用的特点和关系. 相似文献
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本文在理解管理模式和商业模式设计创新的基本原理和内在意义的基础上,简述了管理模式和商业模式的基本概念和目的:讨论了管理模式和商业模式中业务系统的内容、作用:利用管理和商业模式创新设计的方法,以外贸企业为例,浅析了管理和商业模式设计与应用:分析了外贸企业的业务系统和盈利模式以及相应管理模式和商业模式的创新设计。 相似文献
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本文针对标准化地位和作用论述中存在的问题,从理性思维出发,深入研究了标准化的地位和作用关系,研究提出了标准化的地位,并给出了每个地位的内涵解释;研究提出了标准化的直接作用,给出了每个作用的理论依据和应用关系;论述了标准化作用的关系和特点. 相似文献
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以某公司全新开发的底盘为研究对象,分析了总体设计参数和达到的指标。重点分析了车架方案和动力总成和主要部件。通过分析和方案论证,达到了设计参数要求和指标。为零部件设计提供指导方向和设计硬点的确定,为下一步的设计开发工作提供了有利依据。 相似文献
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毛绘宇 《制冷空调与电力机械》2010,31(2):107-109
简单介绍了气力垃圾输送管道的种类和材料。重点介绍了几种不同材质和工艺的钢管及其适用范围,并对其进行了比较,指出了螺旋焊管和直缝焊管各自的特点和优势;详细阐述了埋地气力输送钢管的土壤腐蚀类型及比较常见的防腐方法,重点介绍了目前已在气力输送工程中实际应用的3PE防腐、环氧涂层防腐和阴极保护防腐的工艺流程和特点;最后提出了气力垃圾输送管道应用中存在的一些问题和展望。 相似文献
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本文简明扼要地介绍了几种新开发的医学影像技术,叙述了其工作原理和采用的设备和影像记录材料,归纳了其特殊功能和显著成就,阐述了其应用范围和效果,并指出了其令人鼓舞的发展前景。 相似文献
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A modular architecture for rapid development of CAPP systems for agile manufacturing 总被引:2,自引:0,他引:2
Current manufacturing planning software systems, such as computer aided process planning (CAPP) systems, are general and in a closed form. It is very difficult to modify these systems to respond to a user's dynamically changing needs. These systems are no longer suitable for agile manufacturing. This paper presents research aimed at developing a novel architecture for the rapid development of CAPP systems. The architecture supports the construction of CAPP systems from prepackaged, plug-compatible software components. Specifications of the architecture and its building blocks are defined. Several important issues in architecture implementation are discussed, and an experimental system is illustrated. Finally, an Internet-based distributed CAPP system architecture is presented as a preview of next generation CAPP system development. 相似文献
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对自动测试系统(ATS)的开放式结构进行了研究,建立了ATS开放式软件体系结构。基于COM软构件技术开发了软件集成构架,实现了在运行时刻根据测试需求对测试资源的动态调度,用户测试程序与物理仪器资源的操作相互隔离,测试程序具有可移植性和互操作性。软件集成构架对远程和本地测试程序的开发提供了一致的编程接口,使基于开放系统的远程ATS与本地ATS具有相同的开发方式。 相似文献
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The development of complex, flexible manufacturing systems (FMS) is very much dependent on the development of the associated control software. Because of the complexity involved, reliable and quality FMS software with comprehensive functionality and sophistication is difficult to design, implement and maintain. This paper proposes a modular, generic software system. Using the software developed, a range of cellular FMS (CFMS) control software can be generated from a library of well-defined software building blocks. This paper also describes the design of a generic software architecture, covering specifications for the control architecture, controller structure and software platform. Application of the building block concept has addressed the CFMS software problem effectively and the resulting software possesses a high degree of modularity and flexibility. 相似文献
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Celeritas: a coloured Petri net approach to simulation and control of flexible manufacturing systems
In many areas of computerization today, the capabilities of hardware systems far exceed the sophistication of software systems needed for optimum control. This research is an attempt to advance software control capabilities of flexible manufacturing systems (FMSs). To this end, an FMS controller architecture, called Celeritas, has been designed and a software system conforming to this architecture has been designed and implemented. Celeritas is a generic, data-configurable FMS controller designed using the coloured Petri nets (CP-nets) modelling paradigm augmented with decision support software to provide both FMS simulation and control. Formalisms of the CP-net paradigm provide straightforward representation of both the inherent concurrency and resource conflicts present in such a complex system. Augmentations provide user-defined routines for real-time interfaces to this information which is utilized to provide resource arbitration services among jobs competing for scarce resources and overall job scheduling. 相似文献
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Axiomatic Design Theory for Systems 总被引:11,自引:1,他引:10
Nam P. Suh 《Research in Engineering Design》1998,10(4):189-209
A general theory for system design is presented based on axiomatic design. The theory is applicable to many different kinds
of systems, including machines, large systems, software systems, organizations, and systems consisting of a combination of
hardware and software. Systems are represented by means of a system architecture, which takes the form of the {FR}/{DP}/{PV}hierarchies, a ‘junction-module’ diagram, and the ‘flow diagram’. The ‘flow diagram’ for system architecture concisely represents
the system design, the relationship among modules, and the control sequence in operating systems. The flow diagram of the
system architecture can be used for many different tasks: design, construction, operation, modification, and maintenance of
the system. It should also be useful for distributed design and operation of systems, diagnosis of system failures, and for
archival documentation. 相似文献