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Ding, J. (author), Han, Linyan (author), Ge, Ligang (author), Liu, Yizhang (author), Pang, Jianxin (author)Robust locomotion is a challenging task for humanoid robots, especially when considering dynamic disturbances. This article proposes a disturbance observer-based cascaded model predictive control (MPC) approach for bipedal locomotion, with the capability of exploiting ankle, stepping, hip and height variation strategies. Specifically, based...journal article 2022
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Bos, F.R.R.C. (author), Anil Meera, A. (author), Benders, D. (author), Wisse, M. (author)The free energy principle from neuroscience provides a brain-inspired perception scheme through a data-driven model learning algorithm called Dynamic Expectation Maximization (DEM). This paper aims at introducing an exper-imental design to provide the first experimental confirmation of the usefulness of DEM as a state and input estimator for...conference paper 2022
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Veviurko, G. (author), Böhmer, J.W. (author), Mackay, Laurens (author), de Weerdt, M.M. (author)Many electric vehicles (EVs) are using today’s distribution grids, and their flexibility can be highly beneficial for the grid operators. This flexibility can be best exploited by DC power networks, as they allow charging and discharging without extra power electronics and transformation losses. From the grid control perspective, algorithms for...journal article 2022
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Mulder, W. (author), Patty, C. H.Lucas (author), Spadaccia, Stefano (author), Pommerol, Antoine (author), Demory, Brice Olivier (author), Keller, Christoph U. (author), Kühn, Jonas G. (author), Snik, Frans (author), Stam, D.M. (author)Does life exist outside our Solar System A first step towards searching for life outside our Solar System is detecting life on Earth by using remote sensing applications. One powerful and unambiguous biosignature is the circular polarization resulting from the homochirality of biotic molecules and systems. We aim to investigate the...conference paper 2022
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He, K. (author), Dong, Chaoyang (author), Wang, Qing (author)This paper deals with the problem of active disturbance rejection control (ADRC) design for a class of uncertain nonlinear systems with sporadic measurements. A novel extended state observer (ESO) is designed in a cascade form consisting of a continuous time estimator, a continuous observation error predictor, and a reset compensator. The...journal article 2022
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Joseph, G. (author), Varshney, Pramod K. (author)In this paper, we consider the problem of estimating the states of a linear dynamical system whose inputs are jointly sparse and outputs at a few unknown time instants are missing. We model the missing data mechanism using a Markov chain with two states representing the missing and non-missing data. This mechanism with memory governed by the...conference paper 2022
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Dushatskiy, A. (author), Lowe, Gerry (author), Bosman, P.A.N. (author), Alderliesten, T. (author)Deep learning algorithms have become the golden standard for segmentation of medical imaging data. In most works, the variability and heterogeneity of real clinical data is acknowledged to still be a problem. One way to automatically overcome this is to capture and exploit this variation explicitly. Here, we propose an approach that improves...conference paper 2022
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Ozzola, R. (author), Cavallo, D. (author), Freni, Angelo (author), Llombart, Nuria (author), Neto, A. (author)The number of independent links that can be hosted by an antenna platform for Line-of-Sight (LoS) communications is limited by its physical size and the interference between the beams associated with different users. For large-size platforms, the interference can be reduced by compromising the aperture efficiency, and this trade-off is the...journal article 2022
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Anil Meera, A. (author), Wisse, M. (author)The free energy principle (FEP) from neuroscience provides a framework called active inference for the joint estimation and control of state space systems, subjected to colored noise. However, the active inference community has been challenged with the critical task of manually tuning the noise smoothness parameter. To solve this problem, we...conference paper 2022
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Ghanipoor, Farhad Ghanipoor (author), Murguia, Carlos (author), Mohajerin Esfahani, P. (author), van de Wouw, Nathan (author)In this paper, we present a methodology for actuator and sensor fault estimation in nonlinear systems. The method consists of augmenting the system dynamics with an approximated ultra-local model (a finite chain of integrators) for the fault vector and constructing a Nonlinear Unknown Input Observer (NUIO) for the augmented dynamics. Then, fault...conference paper 2022
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Kok, M. (author), Eckhoff, Karsten (author), Weygers, Ive (author), Seel, Thomas (author)Real-time motion tracking of kinematic chains is a key prerequisite in the control of, e.g., robotic actuators and autonomous vehicles and also has numerous biomechanical applications. In recent years, it has been shown that, by placing inertial sensors on segments that are connected by rotational joints, the motion of that kinematic chain...journal article 2022
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Wu, Guohua (author), Luo, Qizhang (author), Du, Xiao (author), Chen, Yingguo (author), Suganthan, Ponnuthurai Nagaratnam (author), Wang, X. (author)Satellite observation scheduling plays a significant role in improving the efficiency of Earth observation systems. To solve the large-scale multisatellite observation scheduling problem, this article proposes an ensemble of metaheuristic and exact algorithms based on a divide-And-conquer framework (EHE-DCF), including a task allocation phase...journal article 2022
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- Maza, Maria (author), Temmerman, Stijn (author), van Wesenbeeck, B (author), Ghisalberti, Marco (author), Tinoco, Rafael O. (author), Hu, Zhan (author) contribution to periodical 2022
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Lopes, Wilfred (author)With the requirements for CubeSats increasing, a push towards utilizing highperformance equipment has never been greater. Incorporating these equipment in an environment that is cost, space and powerconstrained, is challenging. Simultaneously, highperformance equipment require high pointingaccuracy and lowjitter. This thesis proposes the...master thesis 2021
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Schöpe, M.I. (author)Recent advances in Multi-Function Radar (MFR) systems led to an increase in their degrees of freedom. As a result, modern MFR systems are capable of adjusting many parameters during runtime. An automatic adaptation of the radar system to changing situations, like weather conditions, interference, or target maneuvers, is often mentioned in the...doctoral thesis 2021
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Devabhaktuni, Chakravarthy (author)With climate change being a prime source of concern around the world, air pollution is a topic that requires special attention. Therefore, it is of utmost importance to track and measure the emissions in our environment for detecting the sources and understating the climate change so as to figure out possible solutions. Despite ongoing...master thesis 2021
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van der Ven, Mizzi (author)Hydrologic model performance evaluation depends on streamflow observations that are accurately positioned in the landscape. For distributed hydrologic models, this means that the streamflow observation need to be mapped to a location along the model streamflow network that represents the location of the observation station in a hydrologic system...master thesis 2021
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Mulder, Jurgen (author)Users of anonymity networks face differential treatment and sometimes get blocked by websites, it is currently unclear how common this blocking is. This research aims to provide an overview of how common this blocking is while utilizing the AN.ON anonymity network. The analysis is accomplished by utilizing automated web scraping and processing...bachelor thesis 2021
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de Ridder, M.P. (author), den Bieman, J.P. (author), Gautier, C. (author), van Nieuwkoop, J.C.C. (author)To improve the energy density and directional spectra computed with the SWAN model for the North Sea, a data-driven model is trained to correct the SWAN spectra. After training of the data-driven model on a year of observed and modelled data, the energy density and directional spectrum are corrected for three locations in the North Sea. When...conference paper 2021
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Ishikawa, T. (author), Shimada, R. (author), Sawagashira, R. (author), Komine, T. (author)There are from 2,000 to 3,000 rescues including those of unconscious people every year on the beaches of Japan, as shown in Fig. 1. The occurrence of drowning accidents is mainly caused by the rip current (Ishikawa et al., 2014), it accounts for 48 % of drowning accidents, as shown in Fig. 2. Also, in Australia, the United States and the United...conference paper 2021