@inproceedings{BrunnerRoederKuceraetal., author = {Brunner, Stefan and R{\"o}der, J{\"u}rgen and Kucera, Markus and Waas, Thomas}, title = {Automotive E/E-architecture enhancements by usage of ethernet TSN}, series = {13th Workshop on Intelligent Solutions in Embedded Systems (WISES), 12-13 June 2017, Hamburg, Germany}, booktitle = {13th Workshop on Intelligent Solutions in Embedded Systems (WISES), 12-13 June 2017, Hamburg, Germany}, publisher = {IEEE}, doi = {10.1109/WISES.2017.7986925}, pages = {9 -- 13}, abstract = {A huge upheaval emerges from the transition to autonomous vehicles in the domain of road vehicles, ongoing with a change in the vehicle architecture. Many sensors and Electronic Control Units are added to the current vehicle architecture and further safety requirements like reliability become even more necessary. In this paper we present a potential evolution of the Electrical/Electronic-Architecture, including a Zone Architecture, to enable future functionality. We reveal the impact on the communication network concerning these architectures and present a potential communication technology to facilitate such architectures.}, subject = {Kraftfahrzeug}, language = {en} } @inproceedings{ButtnerAlonsoVillaBohigasBoladerasetal., author = {Buttner, Johannes and Alonso-Villa, Cristina and Bohigas Boladeras, Pere and Kucera, Markus and Waas, Thomas}, title = {The Need for New Software Architectures for Next-generation Vehicle}, series = {Proceedings of the 5th International E-Conference on Advances in Engineering, Technology and Management (ICETM 2021)}, booktitle = {Proceedings of the 5th International E-Conference on Advances in Engineering, Technology and Management (ICETM 2021)}, isbn = {978-1-63248-192-4}, pages = {58 -- 61}, abstract = {Assuming that future connected cars with automated driving functions will require even more computing power and communication bandwidth, the current network infrastructure as well as the existing individualized control units are not a profitable option for such vehicles. In addition, changing user expectations demand flexible architectural patterns and upgradeability of software components without the need to visit the workshop. However, the current statically developed and configured ECU architecture does not offer any practicable possibilities for this. For these reasons, the research for a new dynamic and flexible architecture is necessary. This new type of system architecture is expected to meet future requirements in terms of space, cost, performance, energy efficiency and number of required computing units in the vehicle, which will arise as a result of the implementation/inclusion of new automated driving functionalities, and due to the changes in user expectations. Solutions to this issue can be found in the field of enterprise IT (cluster computing), in which technologies such as Ethernet, container-based virtualization and flexible software architectures have proven themselves to be very efficient for years. Relevant infrastructures, for example from cloud computing providers, have commonly been used in high-performance or high-availability applications. Thus, in the research project A 3F has been investigated which of these concepts and methods can be applied to modern vehicle system architectures. One of the main goals is to assess the synergy potential of the two sectors, information technology and automotive industry, which to date have very different orientations. However, this synergy is expected to grow strongly in the course of the developments mentioned above. In the following pages, the necessary changes related to hardware and software will be discussed briefly und will be compared to concepts and possible solutions from the IT world.}, language = {en} } @inproceedings{BuettnerBohigasBoladerasGottschalketal., author = {B{\"u}ttner, Johannes and Bohigas Boladeras, Pere and Gottschalk, Philipp and Kucera, Markus and Waas, Thomas}, title = {Performance Isolation of Co-located Workload in a Container-based Architecture for Automobile}, series = {9th International Conference on Ambient Computing, Applications, Services and Technologies 2019, 22-26.09.2019, Porto, Portugal}, booktitle = {9th International Conference on Ambient Computing, Applications, Services and Technologies 2019, 22-26.09.2019, Porto, Portugal}, isbn = {978-1-61208-739-9}, pages = {31 -- 37}, abstract = {As the development in the automotive sector is facing upcoming challenges, the demand for in-vehicle computing power capacity increases and the need for flexible hardware and software structures arises, allowing dynamic managament of resources. In this new scenario, software components are to be added, removed, updated and migrated between computing units. To isolate the software components from each other and allow its orchestration, a container-based virtualization approach is being tested throughout this research. The analysis focuses on the question if this virtualization technology could be an option to ensure an interference-free operation. Four different sample applications from the automotive environment are tested for their susceptibility to resource contention. The research on the one hand shows that CPU and memory used by an application can be largely isolated with this technology, but on the other hand, it becomes apparent that support for I/O-heavy usage is currently not implemented sufficiently for container engines.}, language = {en} } @article{AndersBriemNovaketal., author = {Anders, M. and Briem, Ulrich and Novak, G. and Steinbach, G.}, title = {Inspektionsintervalle im Blick}, series = {Technische Logistik}, journal = {Technische Logistik}, publisher = {Huss-Medien}, address = {Berlin}, pages = {14 -- 17}, language = {de} } @article{ChenZhangSongetal., author = {Chen, Rui and Zhang, Zhuo and Song, Ruizhou and Fang, Cheng and Sindersberger, Dirk and Monkman, Gareth J. and Guo, Jianglong}, title = {Time-dependent electroadhesive force degradation}, series = {Smart Materials and Structures}, volume = {29}, journal = {Smart Materials and Structures}, number = {5}, publisher = {IOP Publishing}, doi = {10.1088/1361-665X/ab79b5}, abstract = {This paper concerns a comprehensive investigation of time-dependent electroadhesion (EA) force degradation. EA shear force tests on different object materials (a PET, glass, ABS, and wood plate) have shown that force degradation was dominated by residual polarization charges trapped in the EA pad dielectric rather than in the substrate dielectric from which the object to be prehended is made. In order to explain this dynamic physical phenomenon, a model of dielectric polarization and depolarization has been proposed. According to the derived relationship between EA force and discharge time, three different methods intended to mitigate this problem has been compared: (1) the natural discharge method, (2) the high voltage resistor discharge method, and (3) the discharge prior to field polarity reversal method. These methods are useful for generating repeatable and stable EA forces, which are required for the characterization of EA pads and their subsequent employment in material handling, mobile robot crawling and climbing tasks.}, language = {en} } @article{ChatzitakisSafarovOpferkuchetal., author = {Chatzitakis, Paris and Safarov, Javid and Opferkuch, Frank and Dawoud, Belal and Hassel, Egon}, title = {Vapor pressures and activity coefficients of 2,2,2-trifluoroethanol in binary mixtures with 1,3-dimethyl-2-imidazolidinone and 2-pyrrolidone}, series = {Journal of Molecular Liquids}, volume = {305}, journal = {Journal of Molecular Liquids}, number = {May}, publisher = {Elsevier}, issn = {0167-7322}, doi = {10.1016/j.molliq.2020.112828}, abstract = {The vapor pressures of two binary mixtures containing 2-trifluoroethanol (TFE) + 1,3-dimethyl-2-imidazolidinone (DMI) and TFE + 2-pyrrolidone (PYR), were investigated at temperatures T = (274.15 to 423.15) K using two different static method installations. Both combinations were modelled using an extended Clausius-Clapeyron equation with concentration dependent parameters and the NRTL equation with temperature dependent parameters. The best fit was obtained using the NRTL equation.}, language = {en} } @article{Briem, author = {Briem, Ulrich}, title = {Die neue VDI 2500 : Faserseilwissen kompakt}, series = {Logistik f{\"u}r Unternehmen}, journal = {Logistik f{\"u}r Unternehmen}, number = {11-12}, pages = {36 -- 37}, abstract = {Die Richtlinie VDI 2500 „Faserseile" hat 1990 erstmals zusammenfassend den Stand der Technik auf dem Gebiet der Faserseile dargestellt und wertvolle Infor-mationen {\"u}ber Aufbau, Auswahl, Konfek-tionierung und {\"U}berwachung von Faser-seilen gegeben. Die jetzt erscheinende zweite Auflage enth{\"a}lt eine Vielzahl wichtiger technischer Neuerungen f{\"u}r die Praxis. Zu nennen sind hier die hochfesten Fasern und deren Beschichtung sowie die erstmals systematisch aufgef{\"u}hrten Sei-lendverbindungen und ein Ausblick auf die zuk{\"u}nftig bedeutsamen sogenannten Hybridseile. Eine Checkliste hilft bei der richtigen Auswahl und Bemessung von Faserseilen. Bei den Normen wurde - soweit m{\"o}glich - auf europ{\"a}ische Normen verwiesen.}, language = {de} } @article{Briem, author = {Briem, Ulrich}, title = {Umlaufbiegewechselzahl von verdichteten Seildr{\"a}hten}, series = {Draht}, journal = {Draht}, number = {6}, pages = {14 -- 15}, language = {de} } @article{Briem, author = {Briem, Ulrich}, title = {Biegesteifigkeit von Drahtseilen}, series = {Technische Logistik}, journal = {Technische Logistik}, number = {11-12}, publisher = {Huss-Medien}, address = {Berlin}, pages = {24 -- 25}, language = {de} } @article{GeilfussDawoud, author = {Geilfuß, Kristina and Dawoud, Belal}, title = {Analytical investigation of a zeolite-NaY-water adsorption heat and cold storage and its integration into a steam power process}, series = {Energy}, volume = {195}, journal = {Energy}, number = {March}, publisher = {Elsevier}, doi = {10.1016/j.energy.2020.116977}, abstract = {tabilizing the effects of greenhouse gas emissions on the atmosphere is a key step towards solving the global climate change problems. Storage technologies play an essential role in compensating the discrepancy between surplus energy and peak times. Sorption processes, in particular, offer an environment friendly way for almost loss-free heat (of adsorption or absorption) and cold storage. This work is dedicated first to analytically investigate the potential of applying NaY-Water/Zeolite as a working pair for heat and cold storage upon utilizing high temperature heat. It turned out that, the mass of the adsorber heat exchanger increases the useful specific heat stored from 229 kWh/tzeolite for the ideal storage to 538 kWh/tzeolite or even higher depending on the thermal capacity of the adsorber heat exchanger (AdsHX). Contrary to that trend, COP will decrease with increasing the thermal capacity of the AdsHX. Sensible heat losses between charging and discharging phases do have a negative effect on both stored heating capacity and COP. In addition, an innovative hybrid steam power cum adsorption storage process is introduced and analytically investigated at different ambient conditions and time scenarios for on-peak and off-peak durations over the day. The introduced hybrid process seems quite promising in achieving electrical power production and efficiency enhancements during peak load durations. The extent of enhancing both performance indicators increases with increasing the ambient temperature difference between peak and off-peak times.}, language = {en} }