摘要:

Research in production control which recognizes the strong synergism between product quality and process control is an oft-neglected element of quality engineering. This paper focuses on the optimal control of a sequential production process when product quality is the objective. An algorithm is developed for resolving this problem. The algorithm both identifies the optimal solution and has strong intuitive appeal. To illustrate the procedure, an example is presented for a two-stage discrete part manufacturing system.

ISSN:0020-7543    

DOI:10.1080/00207549208948129

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

A new method based on coherence analysis in the frequency domain for predicting chatter is presented. From the evidence of the experiments conducted, the ability of this method to detect different types of chatter does not seem to be affected by the cutting conditions. The theory of the method is presented, which is then validated by experiments also described.

ISSN:0020-7543    

DOI:10.1080/00207549208948130

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

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 providebothFMS 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.

ISSN:0020-7543    

DOI:10.1080/00207549208948131

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

TESSA is a heuristic for determining which facilities should be adjacent in a planar layout. Once the adjacencies are known the block plan can be constructed by existing techniques. TESSA overcomes problems with earlier heuristics for determining adjacencies as it does not require planarity testing nor does it restrict the type of layout produced. The algorithm is polynomial in time and produces good quality solutions, almost all of which are above 90% of the (often unattainable) upper bound.

ISSN:0020-7543    

DOI:10.1080/00207549208948132

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

The cost of handling material is a vital factor in the facilities design process, whether it is for a new facility or for the redesign of an existing facility. Handling activities generally account for 30 to 40% of production costs, but in some industries they can be as high as 70%. Well designed handling systems are thus crucial for reduced costs and increased profits.

ISSN:0020-7543    

DOI:10.1080/00207549208948133

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor