Search Results - "Kolb, Johann"
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1
Early stage white etching crack identification using artificial neural networks
Published in Forschung im Ingenieurwesen (01-06-2021)“…White Etching Cracks (WEC) in gearbox bearings is a major concern in the wind turbine industry, which can lead to a premature failure of the gearbox. Though…”
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2
Control and Operation of a Hybrid Actuator for Maglev Applications
Published in Power electronics and drives (01-01-2021)“…The hybrid actuator presented in this article is meant to enable stationary and slow dynamic levitation in Maglev applications. The term ‘hybrid’ refers to the…”
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3
Detection and Implications of Laser-Induced Raman Scattering at Astronomical Observatories
Published in Physical review. X (22-06-2017)“…Laser guide stars employed at astronomical observatories provide artificial wavefront reference sources to help correct (in part) the impact of atmospheric…”
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Infrared Wavefront Sensing for Adaptive Optics Assisted Galactic Center Observations with the VLT Interferometer and GRAVITY: Operation and Results
Published in Instruments (Basel) (01-09-2020)“…This article describes the operation of the near-infrared wavefront sensing based Adaptive Optics (AO) system CIAO. The Coudé Infrared Adaptive Optics (CIAO)…”
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5
Assessment of Uncertainties and Tolerances in Electrical Machines
Published in IEEE transactions on magnetics (01-03-2024)“…A variety of manufacturing tolerances exists in electrical machines that influence their behavior. Accurate evaluation of the tolerances and uncertainties is…”
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Efficient Estimation of Electrical Machine Behavior by Model Order Reduction
Published in IEEE transactions on magnetics (01-06-2021)“…The proper orthogonal decomposition (POD) is an efficient model order reduction method, which is frequently coupled with the discrete empirical interpolation…”
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Remanence deviations in permanent magnet synchronous machines evaluated using a model order reduction approach
Published in International journal of numerical modelling (01-05-2023)“…In this article remanence deviations of a permanent magnet synchronous machine are studied with the proper orthogonal decomposition (POD). The design of…”
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8
Estimation of atmospheric turbulence parameters from Shack–Hartmann wavefront sensor measurements
Published in Monthly notices of the Royal Astronomical Society (11-02-2019)“…The estimation of atmospheric turbulence parameters is of relevance for the following: (a) site evaluation and characterization; (b) prediction of the point…”
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9
Powertrain Fault Diagnosis of Manufacturing Processes by Means of Servo Drives
Published in 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (01-05-2019)“…During cyclical manufacturing processes, powertrain and process faults such as friction, distributed damage and material fatigue can occur. The early detection…”
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Conference Proceeding -
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Electromagnetic Design Aspects of a Dynamic Inductive Power Transfer System Made of Precast Concrete Elements
Published in 2023 14th International Symposium on Linear Drivers for Industry Applications (LDIA) (28-06-2023)“…In this article, the development of a dynamic inductive power transfer (DIPT) system for electric vehicles (EV) on highways in concrete construction is…”
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Conference Proceeding -
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Adaptive Optics Telemetry Standard: Design and specification of a novel data exchange format
Published 13-12-2023“…The amount of Adaptive Optics (AO) telemetry generated by VIS/NIR ground-based observatories is ever greater, leading to a growing need for a standardised data…”
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12
Open loop calibration and closed loop non-perturbative estimation of the lateral errors of an adaptive optics system: examples with GRAVITY+ and CHARA experimental data
Published 09-10-2024“…Performances of an adaptive optics (AO) system are directly linked with the quality of its alignment. During the instrument calibration, having open loop fast…”
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13
Infrared tip-tilt sensing: on-sky experience, lessons learned and unsolved problems
Published 14-01-2022“…AO4ELT6 (2019) Infrared tip-tilt sensors (IR TTSs) have been deployed on three different laser guide star adaptive optics (AO) systems on three different…”
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14
Control, Simulation and Validation of a Hybrid Actuator for a Maglev Train Model on a Scale of 1:20
Published in 2020 21st International Conference on Research and Education in Mechatronics (REM) (09-12-2020)“…Hybrid actuators combine permanent magnet and electromagnetic forces, leading to highly energy-efficient operation. With a sophisticated design, only dynamic…”
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Conference Proceeding -
15
Reconstruction of the ground-layer adaptive-optics point spread function for MUSE Wide Field Mode observations
Published 09-03-2020“…A&A 635, A208 (2020) Here we describe a simple, efficient, and most importantly fully operational point-spread-function(PSF)-reconstruction approach for…”
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16
Estimation of atmospheric turbulence parameters from Shack-Hartmann wavefront sensor measurements
Published 20-11-2018“…The estimation of atmospheric turbulence parameters is of relevance for: a) site evaluation & characterisation; b) prediction of the point spread function; c)…”
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17
First on-sky results of ERIS at VLT
Published 04-01-2023“…ERIS (Enhanced Resolution Imager and Spectrograph) is a new adaptive optics instrument installed at the Cassegrain focus of the VLT-UT4 telescope at the…”
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18
Infrared wavefront sensing for adaptive optics assisted Galactic Center observations with the VLT interferometer and GRAVITY: operation and results
Published 15-06-2020“…This article describes the operation of the near-infrared wavefront sensing based Adaptive Optics (AO) system CIAO. The Coud\'e Infrared Adaptive Optics (CIAO)…”
Get full text
Journal Article -
19
Image quality and high contrast improvements on VLT/NACO
Published 10-10-2012“…Proc. SPIE 8447, Adaptive Optics Systems III, 84470L (September 13, 2012) NACO is the famous and versatile diffraction limited NIR imager and spectrograph with…”
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Layer Oriented Wavefront sensor for MAD on Sky operations
Published 25-11-2009“…Proc.SPIE Int.Soc.Opt.Eng.7015:70155P,2008 The Multiconjugate Adaptive optics Demonstrator (MAD) has successfully demonstrated on sky both Star Oriented (SO)…”
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