面向多工序加工系统的可重构工艺规划

为提高工艺规划的柔性、可扩展性、可重用性及动态适应性,从而符合可重组制造系统的特点和需求,研究了工艺规划方法的实现机理,提出面向多工序加工系统的可重构工艺规划方法.根据任务性质异同和分级规划原理,建立了面向多工序加工系统的分层可重构工艺规划体系架构.简化层上,从工序和工步两个层次探讨相似实例工艺的简化方法;重构层上,在构建惩罚、切削时间矩阵以及换刀、定位、装夹、工作台旋转等时间向量的基础上,以非加工时间和相对时间偏差为目标,建立可重构工艺规划的数学模型,利用多目标智能优化算法进行求解;修正层上,对以上工艺进行调整和修改,以使其更符合实际需求.通过实例验证了所提方法的实用性与有效性.     

Reconfigurable modular automation systems for automotive power-train manufacture

This paper describes research towards the realization of reconfigurable modular automated machines and the associated engineering methods and tools necessary to support their lifecycle needs. UK-based research, in collaboration with the Ford Motor Company and several machine builders, has resulted in the development of full-scale prototype reconfigurable modular automation systems for both engine assembly and machining applications. The implementation of an assembly system is featured in this paper. An engineering environment and associated reconfigurable component-based control system architecture have been created aimed at supporting the lifecycle needs of a new generation of agile automated systems, i.e., providing reconfigurable, easily scalable automated machinery. This approach has the potential to fit within a wider collaborative automation strategy where manufacturing systems are implemented as a conglomerate of distributed, autonomous, and reusable units.     

基于流程控制的纺织生产管理系统可重构设计

针对目前中小纺织企业存在的生产管理问题,提出了一种可重构的纺织生产管理系统设计方案,该系统包括流程控制和生产物料计划等模块。针对纺织生产基于流程控制和面向订单的特点,提出了流程节点模块化和订单信息抽象化的设计模型,并建立了业务注册机制,实现了流程控制模块的重构;节点模块化将流程步骤封装为处理单一事务的模块单元,订单抽象化将订单生产相关信息整合为通用元素集合,实现了业务内容与系统框架的松耦合;结合企业开发框架Jboss Seam和工作流引擎jBPM加以实现。研究结果表明,该设计方案可以较好地实现系统的重构性,便于系统的改进和移植。     

Reconfigurable manufacturing systems: Principles,design, and future trends

Reconfigurable manufacturing systems (RMSs), which possess the advantages of both dedicated serial lines and flexible manufacturing systems, were introduced in the mid-1990s to address the challenges initiated by globalization. The principal goal of an RMS is to enhance the responsiveness of manufacturing systems to unforeseen changes in product demand. RMSs are costeffective because they boost productivity, and increase the lifetime of the manufacturing system. Because of the many streams in which a product may be produced on an RMS, maintaining product precision in an RMS is a challenge. But the experience with RMS in the last 20 years indicates that product quality can be definitely maintained by inserting in-line inspection stations. In this paper, we formulate the design and operational principles for RMSs, and provide a state-of-the-art review of the design and operations methodologies of RMSs according to these principles. Finally, we propose future research directions, and deliberate on how recent intelligent manufacturing technologies may advance the design and operations of RMSs.     

可重组制造系统

可重组制造系统是一种能够快速响应新的生产环境的新型制造系统，在快速响应市场变化和个性化生产方面具有重要的意义。阐述了可重组制造系统的发展历史、概念、分类、重组特性及其特点，评述了目前可重组制造系统的研究现状，讨论了可重组制造系统的关键技术，并提出了可重组制造系统应用研究的发展方向。     

快速重组制造系统

企业要获得和保持竞争力,必须配置新一代的可变制造系统－－快速重组制造系统。讨论了快速重组制造系统的科学原理、理论和方法,并介绍中国制造系统和制造单元重组的研究和实施的现况。     

可重构机床设计

为实现机床整个生命周期的可重构性，给出了可重构机床设计的基本原理。根据并行工程理论，提出了一种基于工艺规划与机床配置并行完成的可重构机床设计方法，将机床整个生命周期的配置／重构设计过程分解为几个相互关联的子过程。针对各子过程的实现，以气缸体类零件加工为例，给出了相应的理论和方法，即设计可重构机床的几个关键使能技术。     

可重构的敏捷供应链管理系统

提出的敏捷供应链系统以供应链基本功能体为核心，建立了一套基于组件技术、代理技术和工作流技术的供应链敏捷化配置工具，可方便地对供应链中的商务流程进行编辑、重组，实现企业业务流程和功能的规范化和敏捷化，以可重用组件实现GUI前台重构，以多代理协同机制实现后台过程重组，较好地实现了供应链管理敏捷化的目标。     

Joint decision making for maintenance and production scheduling of production systems

Deteriorated equipment has a significant impact on the product quality and maintenance policies. In this paper, we present a decision-making architecture to determine maintenance and product dispatching policies based on condition-monitoring information and the relationship between machine degradation and associated product quality. We use a Markov decision process for the long-term decision making and integer programming for the short-term decision making with a multi-product, multi-station system. We demonstrate the advantage of the proposed approach by comparing the proposed policy with traditional decision-making approaches. Furthermore, we illustrate the improvement of the proposed policy over the current usage-based maintenance policy with a semiconductor manufacturing process application.     

Simulation of technological systems in custom production

Russian Engineering Research -     

Rule-based production planning in flexible manufacturing systems

Production planning in flexible manufacturing may require the solution of a large-scale discrete-event dynamic stochastic optimization problem, due to the complexity of the system to be optimized, and to the occurrence of discrete events (new orders and hard failures). The production planning problem is here approached for a multistage multipart-type manufacturing shop, where each work cell can share its processing time among the different types of parts. The solution of this problem is obtained by an open-loop-feedback control strategy, updated each time a new event occurs. At each event time, two coupled problems are solved: 1) a product-order scheduling problem, conditioned on estimated values of the production capacities of all component work cells; and 2) a production-capacity planning problem, conditioned on predefined sequences of the product orders to be processed. In particular, the article aims at defining a production planning procedure that integrates both analytical tools, derived from mathematical programming, and knowledge-based rules, coming from experience. The objective is to formulate a hybrid (knowledge-based/analytical) planning architecture, and to analyze its use for multicell multipart-type manufacturing systems.     

Pneumatic positional drive for flexible production systems

A high-speed pneumatic inertial drive is proposed. The positional precision of the drive is sufficient for use in the automation of flexible production systems. The positional coordinates are specified by means of software.     

Requirements analysis of production management software systems

A methodology and an expert system are presented for use in determining software requirements for production planning and control systems. A dual taxonomy of production systems is proposed, based on both functional types and industrial sectors. The main aim is the production of a tool for identifying changes to the standard software or the organization of the firm which would produce the maximum benefit, based on the system concepts of potential and feasible changes. The methodology is implemented with the help of software engineering tools ranging from structured systems analysis to an object-oriented expert system shell with simultaneous support of the hypercard technique.     

可重构制造系统概述

总结了国内外学者对于可重构制造系统（RMS）及相关领域的研究,归纳得出RMS的特性及关键技术,简要阐述RMS是如何应对市场的突然变化。利用层次分析法对大规模生产系统（DMS）、柔性制造系统（FMS）及RMS等3个典型的制造系统进行评价,验证其在制造系统发展中的优势地位。     

网络化可重构制造资源优化配置技术研究

在中国国家863高技术发展计划重大专项《基于制造资源优化配置的制造过程管理系统》之子课题《可重构制造资源优化配置平台》，中国航空科学基金项目《以工艺流程为核心的异地协同制造资源优化配置及其实现技术研究》资助下，面向网络化、智能化、敏捷化的数字制造模式，综合运用面向对象技术、分布式数据库技术、集成技术，以及多目标优化理论，开展网络化可重构制造资源优化配置关键技术研究，重点是建构网络化协同制造任务信息模型，网络化制造资源信息模型，动态可重构的制造资源优化配置方案，开发网络化可重构制造资源优化配置平台。     

Classification of Reconfigurable Parallel Mechanisms

Russian Engineering Research - The theoretically possible reconfigurable parallel mechanisms are classified, in terms of the layout of guides on the base. Formulas are derived for the...     

可重构机器的模块化设计

提出了一种基于旋量理论以及图论的可重构机器的模块化设计方法.该方法通过对已知加工任务的分析,建立实现该任务的可重构机器的拓扑构型,同时利用机械模块库生成一系列可选择的可重构机器.设计方法主要由数学模型建立模块、任务分析模块、拓扑构型模块和机械模块的选择模块4部分组成.并根据上述方法,对可重构机器进行软件建模.