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@PHDTHESIS{Montavon:835033,
author = {Montavon, Benjamin Leendert},
othercontributors = {Schmitt, Robert H. and Heizmann, Michael},
title = {{V}irtual reference frame based on distributed large-scale
metrology providing coordinates as a service; 1. {A}uflage},
volume = {27/2021},
school = {RWTH Aachen University},
type = {Dissertation},
address = {Aachen},
publisher = {Apprimus Verlag},
reportid = {RWTH-2021-10238},
isbn = {978-3-98555-010-4},
series = {Ergebnisse aus der Produktionstechnik},
pages = {1 Online-Ressource : Illustrationen, Diagramme},
year = {2021},
note = {Druckausgabe: 2021 - Auch veröffentlicht auf dem
Publikationsserver der RWTH Aachen University; Dissertation,
RWTH Aachen University, 2021},
abstract = {Globalization, technological advances and societal trends
are reflected in manufacturing by larger and more complex
products, individualization and smaller lot sizes, tighter
tolerances as well as the pursuit of shorter cycle times,
higher degree of automation and resilience, improved
cost-efficiency and sustainability. Cyber-Physical
Production Systems (CPPS) reacting to these requirements
lead to metrology becoming a indispensable enabler to
provide synchronization between real world systems and
virtual models required to implement adaptive automation and
subsequent control loops. Novel paradigms, especially in
assembly, imply a mobilization of resources such as robots
and subsequently require an ubiquitous reference coordinate
frame taking over the role of fixed monuments to maintain
stable processes and account for kinematic inaccuracies.
This thesis introduces and investigates the Coordinates as a
Service (CaaS) paradigm adopting the methodology of Design
Science Research. It aims at making available the benefits
of a servitized, virtual reference coordinate frame based on
multiple, heterogeneous Large-Scale Metrology (LSM)
instruments to applications constituting CPPS and relying on
ubiquitous spatial synchronization. The course of research
commences with the introduction of a novel, artifact-free
method to register the local coordinate systems of
heterogeneous LSM instruments to provide a common, global
coordinate system. Following the unification on physical
level, an abstraction on interface level using a functional,
technology-independent model for the individual LSM
instruments and standardized Internet of Things (IoT)
protocols is developed. To further achieve the amalgation of
necessary information and data flows and their integration
into the shop floor’s infrastructure, a reference
architecture for CaaS is elaborated using a decomposition
into individual microservices as approach to satisfy the
requirements of modern manufacturing IT. Adhering to the
service-oriented design, the individual instruments are
considered as resources of CaaS, such that an approach to
resource management based on descriptive models and a novel
metric is investigated. The approach deliberately allows to
defer this task to a superordinate planning system if
necessary. To validate the outcome of the individual design
cycles, a CaaS reference system using laser trackers, indoor
GPS and ultrawideband systems as well as a machine tool is
implemented at WZL’s laboratory for Metrology, Assembly
and Robotic Systems. The implementation is accompanied by
the elaboration of a reusable multi-layer IT architecture.
Both the CaaS reference system and IT architecture are used
in reference applications, concluding a successful
validation.},
cin = {417510 / 417200},
ddc = {620},
cid = {$I:(DE-82)417510_20140620$ / $I:(DE-82)417200_20140620$},
typ = {PUB:(DE-HGF)11 / PUB:(DE-HGF)3},
doi = {10.18154/RWTH-2021-10238},
url = {https://publications.rwth-aachen.de/record/835033},
}
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