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Advanced concepts of a task driven factory

A general interface standard for factory automation
: Hoffmeister, Michael

Hoffmeister, Michael (Ed.); Peschl, Michael (Ed.) ; Fraunhofer-Institut für Produktionstechnik und Automatisierung -IPA-, Stuttgart; Harms & Wende GmbH & Co KG, Hamburg:
Knowledge-based manufacturing. XPRESS Proceedings : A new approach for precision assembly industries. Status Colloquium 3-4 May 2011, Stuttgart, Germany
Stuttgart: Fraunhofer IPA, 2012
1 S.
Status Colloquium "Knowledge-based Manufacturing" <2011, Stuttgart>
Fraunhofer IPA ()
knowledge based; manufacturing; Fabrikorganisation; Reihenfolgeplanung; task planning; Fertigungsplanung; flexibles Fertigungssystem; Informationsverarbeitung

The Task Description Document (TDD) allows describing the manufacturing task such, that it can be understood by many machines, even from different vendors. However, by principle, each vendor wants to bring in his specific features to the task description, as well. This counteracts the idea of standardising task descriptions.
In order to solve this issue, the XPRESS approach foresees, that each Manufactron describes its own particularities with respect to the TDD. That is, the Manufactron Self Description (MSD) requests information, which shall be contained within a valid TDD.
When planning the production order, the Production Configuration System requires all Manufactrons to provide their Manufactron Self Description. This allows to decide, which Manufactron is basically capable of fulfilling the manufacturing task. Based on this information, a Task Description Document is generated, which holds sufficient knowledge for all applicable Manufactrons. The specific structure of the TDD permits to hold this superset of information.
After generation, this common applicable TDD can be distributed and automatically simulated on multiple Manufactrons to predict costs, product and quality features.
The XPRESS approach turns simple machines and automation elements into "Manufactrons", which are self-standing and providing expertise in order to deal with a multitude of variations. These variations are introduced by preceding process steps, by different materials or by fast changing product designs. In order to cope with constantly changing conditions, the XPRESS concept foresees a well-defined, but open XML document called Task Description Document for interfacing between all levels of the XPRESS hierarchy.
Each Task Description Document complies to this well-defined specification; the goal is to describe a manufacturing task by a set of always understandable knowledge items rather than providing recipe values, which are specific to a single machine.