TY  - JOUR
A1  - Braun, Sebastian
A1  - Cheng, Chi-Tsun
A1  - Dowey, Steve
A1  - Wollert, Jörg
T1  - Performance evaluation of skill-based order-assignment in production environments with multi-agent systems
JF  - IEEE Journal of Emerging and Selected Topics in Industrial Electronics
N2  - The fourth industrial revolution introduces disruptive technologies to production environments. One of these technologies are multi-agent systems (MASs), where agents virtualize machines. However, the agent's actual performances in production environments can hardly be estimated as most research has been focusing on isolated projects and specific scenarios. We address this gap by implementing a highly connected and configurable reference model with quantifiable key performance indicators (KPIs) for production scheduling and routing in single-piece workflows. Furthermore, we propose an algorithm to optimize the search of extrema in highly connected distributed systems. The benefits, limits, and drawbacks of MASs and their performances are evaluated extensively by event-based simulations against the introduced model, which acts as a benchmark. Even though the performance of the proposed MAS is, on average, slightly lower than the reference system, the increased flexibility allows it to find new solutions and deliver improved factory-planning outcomes. Our MAS shows an emerging behavior by using flexible production techniques to correct errors and compensate for bottlenecks. This increased flexibility offers substantial improvement potential. The general model in this paper allows the transfer of the results to estimate real systems or other models.
KW  - cyber-physical production systems
KW  - event-based simulation
KW  - multi-agent systems
KW  - digital factory
KW  - industrial agents
Y1  - 2021
U6  - http://dx.doi.org/10.1109/JESTIE.2021.3108524
SN  - 2687-9735
IS  - Early Access
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Kasch, Susanne
A1  - Schmidt, Thomas
A1  - Jahn, Simon
A1  - Eichler, Fabian
A1  - Thurn, Laura
A1  - Bremen, Sebastian
T1  - Lösungsansätze und Verfahrenskonzepte zum Laserstrahlschmelzen von Glas
JF  - Schweissen und Schneiden
Y1  - 2021
SN  - 0036-7184
VL  - 73
IS  - Heft 1-2
SP  - 32
EP  - 39
PB  - DVS Verlag
CY  - Düsseldorf
ER  - 
TY  - JOUR
A1  - Zabirov, Alexander
A1  - Schleser, Markus
A1  - Bucherer, Sebastian
T1  - Füge- und Dichtkonzept für einen Leichtbauverbrennungsmotor
JF  - adhäsion KLEBEN & DICHTEN
Y1  - 2021
U6  - http://dx.doi.org/10.1007/s35145-021-0531-5
SN  - 2192-8681
VL  - 65
IS  - 11
SP  - 12
EP  - 19
PB  - Springer Nature
CY  - Cham
ER  - 
TY  - JOUR
A1  - Engemann, Heiko
A1  - Cönen, Patrick
A1  - Dawar, Harshal
A1  - Du, Shengzhi
A1  - Kallweit, Stephan
T1  - A robot-assisted large-scale inspection of wind turbine blades in manufacturing using an autonomous mobile manipulator
JF  - Applied Sciences
N2  - Wind energy represents the dominant share of renewable energies. The rotor blades of a wind turbine are typically made from composite material, which withstands high forces during rotation. The huge dimensions of the rotor blades complicate the inspection processes in manufacturing. The automation of inspection processes has a great potential to increase the overall productivity and to create a consistent reliable database for each individual rotor blade. The focus of this paper is set on the process of rotor blade inspection automation by utilizing an autonomous mobile manipulator. The main innovations include a novel path planning strategy for zone-based navigation, which enables an intuitive right-hand or left-hand driving behavior in a shared human–robot workspace. In addition, we introduce a new method for surface orthogonal motion planning in connection with large-scale structures. An overall execution strategy controls the navigation and manipulation processes of the long-running inspection task. The implemented concepts are evaluated in simulation and applied in a real-use case including the tip of a rotor blade form.
KW  - mobile manipulation
KW  - large-scale inspection
KW  - wind turbine production
KW  - autonomous navigation
KW  - surface-orthogonal path planning
Y1  - 2021
U6  - http://dx.doi.org/10.3390/app11199271
SN  - 2076-3417
N1  - Belongs to the Special Issue "Advances in Industrial Robotics and Intelligent Systems"
VL  - 11
IS  - 19
SP  - 1
EP  - 22
PB  - MDPI
CY  - Basel
ER  -