11,708 research outputs found
An agile and adaptive holonic architecture for manufacturing control
Tese de doutoramento. Engenharia Electrotécnica e de Computadores. 2004. Faculdade de Engenharia. Universidade do Port
Discrete events: Perspectives from system theory
Systems Theory;differentiaal/ integraal-vergelijkingen
TOWARDS DIGITAL TWIN-DRIVEN PERFORMANCE EVALUATION METHODOLOGY OF FMS
The paper presents a method of automated modelling and performance evaluation of concurrent production flows carried out in Flexible Manufacturing Systems. The method allows for quick assessment of various variants of such systems, considering their structure and the organization of production flow of possible ways of their implementation. Its essence is the conditions imposed on the designed model, limiting the space of possible variants of the production flow only to deadlock-free variants. The practical usefulness of the model implemented in the proposed method illustrates the example, which describes the simultaneous assessment of alternative variants of the flexible machining module's structure and the planned multi-assortment production. The ability of the method to focus on feasible solutions offers attractive perspectives for guiding the Digital Twin-like scenario in situations caused by the need to change the production flow
Part grouping for efficient process planning
A framework to provide automated part grouping has been investigated in order
to overcome the limitations found in existing part grouping techniques. The work is
targeted at: exploration of criteria for feature-based part grouping to make the process
planning activity efficient; determination of the optimal number of part families in the part grouping
process; development of an experimental hybrid process planning system (HYCAPP); investigation of the effects of improved part grouping on manufacturing cell
design.
The research work has explored the creation of a feature-based component data
model and manufacturing system capability data model, and checked the limitations
inherent in existing part grouping techniques i.e. part grouping: around methods; based
on part geometry; based on machining processes; and based on machines. [Continues.
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