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  - https://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  - 
TY  - JOUR
A1  - Engels, Elmar
A1  - Wiendahl, H.-P.
A1  - Doege, E.
T1  - Universelle hydraulische Try-Out Presse / Teilprojekt A6 / Wiendahl, H.-P. ; Doege, E. ; Engels, E.
JF  - Tagungsband : 12. Oktober 1999, Leibnizhaus Hannover / Sonderforschungsbereich 384 Verfügbarkeitssicherung Reaktionsschneller Produktionssysteme, Universität Hannover. Hrsg.: H.-P. Wiendahl ; M. Röhrig
Y1  - 1999
SN  - 3-00-005495-2
N1  - Industriekolloquium Verfügbarkeit <1999, Hannover> ; Sonderforschungsbereich Verfügbarkeitssicherung Reaktionsschneller Produktionssysteme <Hannover>
CY  - Hannover
ER  - 
TY  - JOUR
A1  - Engels, Elmar
A1  - Krauskopf, S.
T1  - Innovation in Motion-Logic programming - a versatile interface
JF  - Proceedings to the 12th International Workshop on Research and Education in Mechatronics, REM 2011, Kocaeli, Turkey, 15.09.-16.09.2011
Y1  - 2011
SN  - 978-975-8047-96-3
PB  - -
ER  - 
TY  - JOUR
A1  - Engels, Elmar
A1  - Doege, Eckhart
T1  - Pressen - Vergleich zwischen Raumlenker- und Exzenterantrieb / Doege, Eckhart ; Engels, Elmar
JF  - Blech, Rohre, Profile : Herstellen, Verarbeiten und Veredeln von Band, Blech, Rohren und Profilen. 46 (1999), H. 7-8
Y1  - 1999
SN  - 0006-4688
SP  - 31
EP  - 37
ER  - 
TY  - JOUR
A1  - Engels, Elmar
A1  - Doege, Eckhart
T1  - Pressen - Hubzahlregelung an Schnelläuferpressen mit Fuzzy-Reglern / Doege, Eckhart ; Engels, Elmar
JF  - Blech, Rohre, Profile : Herstellen, Verarbeiten und Veredeln von Band, Blech, Rohren und Profilen. 45 (1998), H. 11
Y1  - 1998
SN  - 0006-4688
SP  - 47
EP  - 49
ER  - 
TY  - JOUR
A1  - Engels, Elmar
A1  - Doege, E.
A1  - Elend, L. E.
T1  - Modifizierte Ziehkissenklemmung erweitert Pressen-Arbeitsbereich /  Doege, E. ; Elend, L. E. ; Engels, E.
JF  - Maschinenmarkt. 106 (2000), H. 7
Y1  - 2000
SN  - 0341-5775
SP  - 30
EP  - 33
ER  - 
TY  - JOUR
A1  - Engels, Elmar
A1  - Doege, E.
T1  - Optimizing the number of strokes for punching machines using a fuzzy controlled electrohydraulic damping system / Doege, E. ; Engels, E.
JF  - ICME 98, CIRP International Seminar on Intelligent Computation in Manufacturing Engineering, Proceedings, Capri, IT, Jul 1-3, 1998
Y1  - 1998
SP  - 471
EP  - 478
CY  - Capri
ER  - 
TY  - JOUR
A1  - Engels, Elmar
T1  - Reduzierung der horizontalen Massenkräfte bei Pressen mit Raumlenkerantrieb
JF  - UTF-science : Forschungsmagazin für die Produktionstechnik. 1 (2000), H. 3
Y1  - 2000
SP  - 17 S.
ER  - 
TY  - JOUR
A1  - Engeln-Müllges, Gisela
T1  - Entartungsbedingungen für Gleitflächennomogramme und Nomographierbarkeitsbedingungen für Fluchtebenennomogramme
JF  - ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik
Y1  - 1982
U6  - https://doi.org/10.1002/zamm.19820620203
SN  - 1521-4001
VL  - 62
IS  - 2
SP  - 77
EP  - 93
ER  - 
TY  - JOUR
A1  - Engelmann, Ulrich M.
A1  - Simsek, Beril
A1  - Shalaby, Ahmed
A1  - Krause, Hans-Joachim
T1  - Key contributors to signal generation in frequency mixing magnetic detection (FMMD): an in silico study
JF  - Sensors
N2  - Frequency mixing magnetic detection (FMMD) is a sensitive and selective technique to detect magnetic nanoparticles (MNPs) serving as probes for binding biological targets. Its principle relies on the nonlinear magnetic relaxation dynamics of a particle ensemble interacting with a dual frequency external magnetic field. In order to increase its sensitivity, lower its limit of detection and overall improve its applicability in biosensing, matching combinations of external field parameters and internal particle properties are being sought to advance FMMD. In this study, we systematically probe the aforementioned interaction with coupled Néel–Brownian dynamic relaxation simulations to examine how key MNP properties as well as applied field parameters affect the frequency mixing signal generation. It is found that the core size of MNPs dominates their nonlinear magnetic response, with the strongest contributions from the largest particles. The drive field amplitude dominates the shape of the field-dependent response, whereas effective anisotropy and hydrodynamic size of the particles only weakly influence the signal generation in FMMD. For tailoring the MNP properties and parameters of the setup towards optimal FMMD signal generation, our findings suggest choosing large particles of core sizes dc > 25 nm nm with narrow size distributions (σ < 0.1) to minimize the required drive field amplitude. This allows potential improvements of FMMD as a stand-alone application, as well as advances in magnetic particle imaging, hyperthermia and magnetic immunoassays.
KW  - key performance indicators
KW  - magnetic biosensing
KW  - coupled Néel–Brownian relaxation dynamics
KW  - frequency mixing magnetic detection
KW  - magnetic relaxation
KW  - micromagnetic simulation
KW  - magnetic nanoparticles
Y1  - 2024
U6  - https://doi.org/10.3390/s24061945
SN  - 1424-8220
N1  - This article belongs to the Special Issue "Advances in Magnetic Sensors and Their Applications"
VL  - 24
IS  - 6
PB  - MDPI
CY  - Basel
ER  -