ISSN:0953-7287    

DOI:10.1080/09537289308919413

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

Automated manufacturing systems (AMSs) have the potential for providing a high level of manufacturing performance. Owing to the high cost of capital investment, a high utilization level of AMSs with the help of suitable production planning and control (PPC) is feature of AMSs. Realizing the potential of PPC in AMSs, an attempt has been made to review the available techniques/methods for solving the problems of production planning, control and scheduling in AMSs. The need for further research on PPC of AMSs is brought to the fore along with future research directions.

ISSN:0953-7287    

DOI:10.1080/09537289308919414

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

This paper proposes design rules in order to simplify current MRP II software systems and make them suitable for the small manufacturing firm. Simplification rules apply to production data management by reducing database complexity. This has consequences for medium-term requirements planning which is moved toward the realization of simultaneous material and capacity planning. The simplification procedure is completed by applying aggregate decision models to shop floor control which allow the introduction of a minimal transaction processing system. Object-oriented analysis concepts are used for the design of the primary production data model, which has a consistent effect on transaction data and decisional procedures throughout the whole production management software system.

ISSN:0953-7287    

DOI:10.1080/09537289308919415

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

Procurement lead time estimates are critical factors in production planning; however, they are generally based on a buyer's experience. The Westinghouse Corporation developed a linear model which successfully predicted procurement lead times for hot and cold rolled steel. This paper discusses nine models which use utilization and inventory data to predict lead time planning factors for aluminum, magnesium, steel and titanium products. The Lockheed-Georgia Company, which produces aerospace products, provided data for this research. The functional form of the models is significant and suggests that a nonlinear transformation of utilization based upon simple queueing models is a significant predictor of lead time duration.

ISSN:0953-7287    

DOI:10.1080/09537289308919416

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

Aggregate production planning decisions are inter mediate range decisions that can have a significant impact on both productivity and profitability. In this paper, we examine an interactive computer-based method that provides decision support for the aggregate planner. The proposed approach combines the judgement of the planner with the optimization of subproblems to arrive at an effective solution for multi-family aggregate production planning problems. In the interactive approach, the planner exercises direct control over sensitive workforce levels and production capacities. A network flow sub-problem solver is used to generate optimal production plans and inventory levels given the user-specified production capacities. Decision aids are provided to help the planner achieve a cost-effective solution that is consistent with judgement concerning workforce levels. Computational testing on five test problems indicates that very cost-effective solutions can be obtained. The results of applying the interactive method to a real-world problem are also reported.

ISSN:0953-7287    

DOI:10.1080/09537289308919417

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

The combination of group technology and heuristic is used to schedule jobs on a machine equipped with an automatic tool changer (ATC). The problem is prominent in flexible manufacturing systems where the efficiency in operation is, in part, obtained by use of ATC. The procedure presented here is efficient and does not require complex mathematics.

ISSN:0953-7287    

DOI:10.1080/09537289308919418

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

Logistic objectives constitute a compromise between having short leadtimes and a low volume of work in progress on the one hand and a high resource loading and due date obligation on the other. Miscellaneous production planning approaches offered today provide different combinations of logistic objectives for satisfying a manufacturing strategy. To combine the strength of the various approaches into a unified system, a new approach based on a dynamic and distributed production planning methodology is proposed. To customize the approach, various analyses and specifications have to be made and for that reason some important characteristics and criteria for analysing production control philosophies will be given.

ISSN:0953-7287    

DOI:10.1080/09537289308919419

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

The increasing dissatisfaction of users with their Computer-aided production management (CAPM) systems has been widely reported. This dissatisfaction led the UK's Science and Engineering Research Council to initiate a major study to improve CAPM systems use. The research results presented here form part of the overall initiative and focus on the development of a set of guiding principles for companies seeking to implement appropriate CAPM systems. The research team have identified three key elements that must be considered when implementing a CAPM system. First, that CAPM implementation can be eased if the overall manufacturing-system is first simplified. Second, we recognize that even then most companies will still require a computerized solution thus any methodology must include a software specification. Third, the overall performance of the system may be enhanced by changes to the infrastructure that supports the software. In attempting to meet these requirements the research team developed a four-stage methodology. The first two stages of the methodology deal primarily with the strategic context for CAPM, i.e. the simplification. The last two stages develop a software specification and present guidelines for the development of appropriate infrastructure configurations.

ISSN:0953-7287    

DOI:10.1080/09537289308919420

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

The management of the manufacture of ‘one-of-a-kind’ products (OKP) is a neglected field in production management. The key to an improvement in productivity and profitability in this field appears to depend mainly on a reduction in the delivery times for products, which in turn requires a reduction in material throughput times, and in design and production planning lead times. This paper looks at some of the ways which can be used to reduce OKP delivery times.

ISSN:0953-7287    

DOI:10.1080/09537289308919421

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

Even if the industrial production process forms a common frame of reference, the integration of the economist's concepts of production with those of the industrial production engineer may well present a vexed problem. Yet a basic requirement to engineers and economists alike ought to be a proper understanding of the interplay between engineering and economics in the area of industrial production. One solution to this problem may be to consider the production process in the unifying sense of aconstraint satisfaction problem. This approach, which is not without merit in the history of science, has its foundation in an interdisciplinaryconstraint classification, developed originally in analytical mechanics. To illustrate this approach, we demonstrate in this note how the two economic notions of a fund of services and a stock of goods, are recast into two distinct constraint formulations of fundamental importance in the mathematical modelling of industrial production processes.

ISSN:0953-7287    

DOI:10.1080/09537289308919422

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor