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Schouhamer Immink, Kees A. (author), Weber, J.H. (author)We present and analyze a new construction of bipolar balanced codes where each codeword contains equally many -1's and +1's. The new code is minimally modified as the number of symbol changes made to the source word for translating it into a balanced codeword is as small as possible. The balanced codes feature low redundancy and time...journal article 2023
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Mc Ginty, Ian (author)Twisted and coiled polymer muscles (TCPMs) are a type of artificial muscle with a remarkable power-to-weight ratio. However, actuation dynamics are slow compared to other artificial muscles. This work aims to improve dynamic performance by incorporating redundancy. Specifically, this work examines if TCPM bundles of heterogeneous geometries...master thesis 2022
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Zwart, David (author)LoRaWAN is a public Wireless Sensor network with excellent properties like being long-range, low-energy radios and resulting in long battery life. Devices are connected to this network through gateways, and they will run in that deployment for years without replacement. Therefore, bugs and security issues in such devices' firmware are present...master thesis 2022
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Bouwmeester, J. (author), Menicucci, A. (author), Gill, E.K.A. (author)The objective of this paper is to investigate which approach would lead to more reliable CubeSats: full subsystem redundancy or improved testing. Based on data from surveys, the reliability of satellites and subsystems is estimated using a Kaplan–Meier estimator. Subsequently, a variety of reliability models is defined and their maximum...journal article 2022
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Schouhamer Immink, Kees A. (author), Weber, J.H. (author)We consider noisy communications and storage systems that are hampered by varying offset of unknown magnitude such as low-frequency signals of unknown amplitude added to the sent signal. We study and analyze a new detection method whose error performance is independent of both unknown base offset and offset's slew rate. The new method...journal article 2022
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Postma, E.D. (author), Couwenberg, Lucas G.F. (author), van Roosmalen, Roderick N. (author), Geelhoed, J. (author), de Groot, P.A. (author), Daran-Lapujade, P.A.S. (author)Saccharomyces cerevisiae, whose evolutionary past includes a whole-genome duplication event, is characterized by a mosaic genome configuration with substantial apparent genetic redundancy. This apparent redundancy raises questions about the evolutionary driving force for genomic fixation of “minor” paralogs and complicates modular and...journal article 2022
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Ahmadi, M. (author), Shekhar, A. (author), Bauer, P. (author)Power electronics converters will play a crucial role in power grid expansion. Superior advantages offered by MMC make it the most popular candidate amongst various converter topologies. However, due to a large number of components installed within MMC, reliability analysis is an unavoidable task that needs to be carried out to maximize the MMC...conference paper 2022
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Ahmadi, M. (author), Shekhar, A. (author), Bauer, P. (author)Power electronic converters (PECs) are workhorses of emerging distribution networks. PEC interfaced grids can function as flexible power corridors facilitating compact and efficient energy exchange between distribution generation, load and storage elements. Introducing adequate Reconfigurability, Modularity, and Redundancy (RMR) in such PEC...conference paper 2022
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Zhang, Yu (author), Wang, Yue (author), Tian, Zhi (author), Leus, G.J.T. (author), Zhang, Gong (author)This paper proposes an efficient direction of departure (DOD) and direction of arrival (DOA) estimation method for multi-input multi-output (MIMO) systems. For uncorrelated scenarios, the redundancy of the covariance matrix is first exploited by establishing its concise representation through redundancy reduction, which transforms the...journal article 2022
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Ross, Robert (author), Ypma, P.A.C. (author), Koopmans, Gerben (author)The here reported work is part of a project on supporting grid resilience by asset management techniques. The present work focuses on support of decision-making after a few failures occurred that may be the start of many more. Methods are reviewed and new algorithms developed where the present IEEE/IEC standard does not provide. Two cases of...conference paper 2022
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Köylü, T.C. (author), Hamdioui, S. (author), Taouil, M. (author)Artificial neural networks (ANNs) are used to accomplish a variety of tasks, including safety critical ones. Hence, it is important to protect them against faults that can influence decisions during operation. In this paper, we propose smart and low-cost redundancy schemes that protect the most vulnerable ANN parts against fault attacks....conference paper 2022
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Abaei, M.M. (author), Hekkenberg, R.G. (author), BahooToroody, Ahmad (author), Valdez Banda, O.A. (author), van Gelder, P.H.A.J.M. (author)Over the next few years, digitalization and automation are expected to be key drivers for maritime transport innovation to be key drivers for maritime transportation innovation. This revolutionary shift in the shipping industry will heavily impact the reliability of the machinery which is intended to be operated remotely with minimum support...journal article 2022
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Keijzer, T. (author), Gallo, A.J. (author), Ferrari, Riccardo M.G. (author)In this paper we present a hierarchical scheme to detect cyber-attacks in a hierarchical control architecture for large-scale interconnected systems (LSS). We consider the LSS as a network of physically coupled subsystems, equipped with a two-layer controller: on the local level, decentralized controllers guarantee overall stability and...conference paper 2022
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Flor, Vinicius B.Braga (author), Filho, Milton B.Do Coutto (author), de Souza, Julio C.Stacchini (author), Vergara Barrios, P.P. (author)Intelligent electrical power grids, widely referred to as smart grids (SGs), rely on digital technology resources, especially communication and measurement devices, becoming a cyber-physical energy system. Massive data flow between grid elements makes smart grids more vulnerable to cyber-attacks. Power system state estimation (SE) - an...journal article 2022
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Bouwmeester, J. (author)This thesis provides an innovative architecture for CubeSats and PocketQubes to improve their performance and reliability. CubeSats and PocketQubes are standard satellite form factors composed of one or more cubic units of 10 cm and 5 cm respectively. It is found that the current modular subsystem approach and the electrical interfaces are not...doctoral thesis 2021
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Georgiev, Ivaylo (author)Payment Channel Networks have been developed to deal with the scalability issue in blockchain technologies. Using them, two parties can make multiple payments between themselves relatively fast. However, usually the channels have too small capacities, unable to handle a big payment. Allowing to split a payment into smaller payments and...bachelor thesis 2021
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van der Kruk, E. (author), Silverman, Anne K. (author), Koizia, Louis (author), Reilly, Peter (author), Fertleman, Michael (author), Bull, Anthony M.J. (author)The prevention, mitigation and treatment of movement impairments, ideally, requires early diagnosis or identification. As the human movement system has physiological and functional redundancy, movement limitations do not promptly arise at the onset of physical decline. A such, prediction of movement limitations is complex: it is unclear how...journal article 2021
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Disseldorp, Thomas (author)The environment that high-tech companies have to navigate is changing rapidly. To deal with these changes, managers have limited tools, of which many are based on predictive properties. However, as Black Swans and X-events illustrate, the future is inherently unpredictable. As the field of strategic management is primarily involved in dealing...master thesis 2020
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Shekhar, A. (author)Energy transition will inevitably lead to greater electrification. For example, it is anticipated that electrical energy demand will rise by at least 2-3 times by 2050 with increasing share of electric vehicles and heat pumps. This will translate to significant increase in power demand on the existing medium voltage distribution grid, resulting...doctoral thesis 2020
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Dai, C. (author), Lefebvre, Sylvain (author), Yu, Kai Ming (author), Geraedts, Jo M.P. (author), Wang, C.C. (author)We present a method for effectively planning the motion trajectory of robots in manufacturing tasks, the tool paths of which are usually complex and have a large number of discrete time constraints as waypoints. Kinematic redundancy also exists in these robotic systems. The jerk of motion is optimized in our trajectory planning method at the...journal article 2020