并行工程管理系统研究

并行工程管理系统是并行工程的核心，它由产品开发过程建模仿真与优化子系统和产品开发过程管理与协调子系统组成。本文讨论了开发过程建模的ＩＤＥＦ３过程描述获取方法，提出了系统的体系结构和主要功能，建立了面向对象的产品开发过程仿真机制。     

产品开发过程管理系统

分析了PDM系统对产品开发过程管理的基本功能和不足，提出了一种集成产品数据管理和开发过程管理的工作流管理系统，提出了一种以过程活动为核心，集成了产品结构，组织，资源，成本和时间等视图的集成化产品开发过程模型。针对此模型，设计并实现了一个集成工作流建模，工作流执行和产品数据管理的产品开发过程管理系统。     

让顾客融入产品开发和设计过程

为了加强面向顾客的产品开发和设计过程。本文提出了评价方法，该方法得自产品开发和使用的过程链以及经证明为可靠的设计方法学理论。作者建议成立郑客－销售－开发一体的协会。     

基于PDM的产品开发过程管理方法的研究与实现

分析了产品开发过程与工作流程的关系,提出了产品开发过程分析与改进方法,并且对具体的铁路货车产品开发过程进行了分析与改进。给出了基于Windchill PDM的产品开发过程管理方法,包括用户、组、数据域、产品生命周期、工作流程等定义与实现。经过实践证明,基于PDM的产品开发过程管理方法有很强的实用性,具有广泛的推广应用价值。     

产品开发过程与数据集成管理模型的研究

针对目前产品开发过程管理与产品数据管理相互独立,无法实现无缝集成的问题,提出以产品开发过程链为主线,产品配置为辅线,建立产品开发过程中的文档与产品配置之间的映射关系,实现开发过程与产品数据的无缝集成.分析了产品开发过程中的人员、过程、资源等主要元素,建立了各对象模型,建立了面向对象的产品开发过程与产品数据的集成管理模型.     

基于活动方法的协同设计过程管理系统研究

通过分析活动的组成及与过程建模的关系，提出了一种协同环境下设计过程管理的体系结构。根据产品开发过程的现状和特点，讨论了过程建模、多活动单元设计环境、过程监控以及系统间的数据交换等一系列重要的问题。最后，给出了协同设计过程管理和过程监控显示情况。     

协同设计中基于DSM过程重构的研究

将设计结构矩阵方法应用到复杂产品的协同设计开发过程中，通过分析设计行为之间的信息交互获得DSM的量化表达，利用图论中的强连通分支问题算法识别耦合活动集，并在此基础上根据DSM重构原则对DSM进行模块化的过程重构，同时对块内设计任务进行聚类、撕裂，获得协同设计开发过程中的优化重组，为复杂产品的设计开发提供了有效的解决方法，并通过实例说明了该方法的实用性。     

产品开发资源能力测度及优化配置研究

资源管理是产品开发过程管理的重要一环,为了定量描述产品开发资源能力,更好地支持产品开发资源配置和管理,提出了资源能力概念及其测度方法,构建了基于产品开发活动及其实现过程(ProA)的资源能力模型,深入分析了产品开发ProA资源能力描述和资源能力层次结构。通过资源任务能力项RTCI与资源实际能力项RPCI的映射关系,以及资源能力指数RCI的匹配度建立了产品开发过程资源能力的优化配置机制和方法。实例应用表明该资源能力模型与方法能对产品开发资源配置进行有效的管理。     

考虑供应的产品和过程分析

作为利用外剖能力进行产品开发过程的基础，必须对产品和过程进行分析。在这个基础上才能对新的开发任务确定目标并确认为开发产品的优化潜力。     

运用模糊理论对产品进行并行设计的生态学评判

将开发适合环保的产品的方法和工具与设计过程捆绑在一起常常令人不满意。作者介绍一种集成的方案，将计算机辅助系统与通常的设计环境融为一体，借助于模糊理论的模糊集将来自ＣＡＤ系统的产品数据和过程数据集合为一个特征值，在产品开发过程中为产品开发者提供简单的，方向正确的决策支持。     

工序分析法在投影仪装配线改善过程中的应用

将投影仪组装作业按照其先后逻辑顺序和作业目的,使用工序图符号对产品组装流程进行工序分析,识别出生产流程改善点.通过改变生产工艺来减少机体反光镜组件的库存,减少在制品库存来缩短停滞时间,改善生产线布局来消除多余搬运活动.通过实施改善方案,工序总数减少,在制品库存降低70%左右,投影仪加工周期大幅降低.     

企业过程建模体系的研究

企业过程建模作为一项支持企业过程集成与优化的共性技术，是对企业系统中与企业过程有关的特性加以抽象表达的工具和方法。首先对企业建模和过程建模进行了探讨，在此基础上，提出了一种企业过程建模体系框架（EPMF），并从四个维对EPMF进行了详细的讨论。最后对EPMF进行了简要的总结。     

Optimal process capability analysis for process design

Conventional process capability analysis is used to measure and control the quality level of a production process in real exercises for on-line quality management. There has been a deficiency in this type of management; namely, the defects which occur in the production process are only passively detected and modified afterwards. Additionally, conventional process capability expression has difficulty distinguishing between alternatives for process selection among possible candidates before process realisation. There is, therefore, considerable motivation for developing a process capability expression which can be used to evaluate alternatives at the beginning of the process design, i.e., off-line application. The conventional C_pm expression is built up by measuring mean deviation and process variances for on-line application. However, if C_pm is used for the process capability analysis for process design, an erroneous C_pm value is found and an inappropriate process design is ended. Thus, the proposed process capability expression revised from the conventional C_pm in consideration of the balance between tolerance cost and quality loss has been developed. This development is the main contribution of this research and, with this development, the appropriate mean and tolerance values can be determined simultaneously prior to the real production process so as to maximise the proposed process capability value. The production is then processed with the pre-determined mean and tolerance values in a real production process. The expectation after process realisation is that the produced responses will be the best of all the alternatives in terms of quality and cost, and that the process capability value obtained after the real production process will be close to the proposed process capability value maximised prior to the real production process.     

基于工序成本的多元过程能力指数分析

单一的多元过程能力指数在反映企业制造多元质量特性产品能力时存在缺陷,无法反映由于各工序成本的差异而造成的工序能力重要性的差别.基于此,从企业工序质量控制和工序成本关系的角度来分析,构建了基于工序成本修正的多元过程能力指数,反映企业的成本控制能力和产品竞争能力.最后,通过修正得到的多元过程能力指数,一方面优选企业的质量改进或控制方案,另一方面判定企业在同类产品制造中的实际质量控制能力和过程成本损失差异.     

热处理工艺数据管理技术研究

针对企业热处理车间工艺管理复杂、重复工作多的现状,根据热处理的生产特点,采用热处理工艺的工艺模板化管理方案,实现工艺模板化管理,并应用到车间MES系统中,达到了工艺归类、方便应用、节省人力成本和工艺维护成本的目的.     

Design Process Optimization Based on Design Process Gene Mapping

The idea of genetic engineering is introduced into the area of product design to improve the design efficiency.A method towards design process optimization based on the design process gene is proposed through analyzing the correlation between the design process gene and characteristics of the design process.The concept of the design process gene is analyzed and categorized into five categories that are the task specification gene,the concept design gene,the overall design gene,the detailed design gene and t...     

Uncertainty management in a process environment

Abstract

Software systems are developed by software projects. A software project generally associates with a process (software development process). A software project's process can be managed by process‐centered software engineering environments (PSEEs). In other words, PSEEs facilitate monitoring software projects. When a software project is being executed, many details may be uncertain in the early phases of the project. Therefore, managing uncertainty of a project's process becomes necessary. We identified existing approaches that can manage process uncertainty. Nevertheless, existing approaches suffer from drawbacks such as resource wasting. We thus propose two new approaches, which are pre‐defined semantics and incremental process program development. The former approach prevents duplicating the same code in a process program and the latter handles both predictable and unpredictable process uncertainty. This paper primarily presents the new approaches.     

The New Nino Capability Index for Dynamic Process Capability Analysis

The process capability analysis is a crucial activity to evaluate if the process outcome meets the design specifications. Classically, such analysis is performed by verifying the in‐control condition of the process and evaluating suitable capability indices, by assuming the process in‐control steady‐state condition. However, the in‐control period of the process characterizes only a part of the system functioning cycle, the one with the lower defective rate. In particular, the system functioning cycle is also characterized by the out‐of‐control period, during which a greater defective rate is produced, and such increasing is not considered by the widely adopted capability indices. As consequence, the classical approaches to perform the process capability analysis involves an overestimation of the process capability level. For this reason, in order to overcome the previously described limitation, in the present paper it is proposed a new capability index based on the real defective rate of the process. Thus, such new index is able to estimate the real process capability level. Finally, in order to compare the new index to the conventional C_p capability index, a numerical comparison study related to a process capability analysis is carried out, and the related practical considerations are given. Copyright © 2013 John Wiley & Sons, Ltd.     

化学气相渗（CVI）碳化硅工艺研究

对均热法、热梯度法和压差－温度梯度法三种化学相渗ＳｉＣ工艺进行了研究，结果表明：三种方法制备周期依次缩短。均热法适合制备形状复杂的样品，提高沉积效率靠增大沉积炉和多放样品来实现，整个过程受气体自由扩散所控制，热梯度法适合制备形状简单、规则的薄壁试样，每炉只能做一个，过程主要受样品内外温度梯度所控制，用该法可以制备出成分连续变化的的功能梯度材料；压差－温度梯度法适合制备板状、圆筒状厚壁样品，过程受样     

基于成形过程的钣金特征识别与工序排配

目的在工序排配中引入特征识别技术,提高工序排配的自动化水平。方法提出了一种基于成形过程的钣金特征识别与工序排配的方法,先在最终的产品零件上进行钣金特征识别,然后按照工序步骤反向逐步进行中间工序设计,形成最终工序排配方案。结果在NX11平台上,以微波炉门体为例进行测试,该方法完成工序排配大约耗时5min,每序设计结果能用于辅助该序数字化模具的生成。结论基于成形过程的钣金特征识别与工序排配,显著提高了工序排配的效率,降低了钣金模具设计的周期。