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The use of wheel-individual drives on the steered axle simultaneously enables propulsion and implementation of steering assistance. This work presents a closed-loop and open-loop method for controlling wheel-selective drives with the aim of reducing the steering wheel torque. The proposed optimal linear-quadratic-integral controller achieves a high control quality while ensuring driving safety and reducing energy consumption.

Mechanical engineering & materials --- wheel individual --- steering assistance --- steering torque --- closed-loop control --- Open-loop control --- radselektiv --- Lenkkraftunterstützung --- Lenkradmoment --- Regelung --- Steuerung

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Millions of people worldwide are affected by neurological disorders which disrupt the connections within the brain and between brain and body causing impairments of primary functions and paralysis. Such a number is likely to increase in the next years and current assistive technology is yet limited. A possible response to such disabilities, offered by the neuroscience community, is given by Brain-Machine Interfaces (BMIs) and neuroprostheses. The latter field of research is highly multidisciplinary, since it involves very different and disperse scientific communities, making it fundamental to create connections and to join research efforts. Indeed, the design and development of neuroprosthetic devices span/involve different research topics such as: interfacing of neural systems at different levels of architectural complexity (from in vitro neuronal ensembles to human brain), bio-artificial interfaces for stimulation (e.g. micro-stimulation, DBS: Deep Brain Stimulation) and recording (e.g. EMG: Electromyography, EEG: Electroencephalography, LFP: Local Field Potential), innovative signal processing tools for coding and decoding of neural activity, biomimetic artificial Spiking Neural Networks (SNN) and neural network modeling. In order to develop functional communication with the nervous system and to create a new generation of neuroprostheses, the study of closed-loop systems is mandatory. It has been widely recognized that closed-loop neuroprosthetic systems achieve more favorable outcomes for users then equivalent open-loop devices. Improvements in task performance, usability, and embodiment have all been reported in systems utilizing some form of feedback. The bi-directional communication between living neurons and artificial devices is the main final goal of those studies. However, closed-loop systems are still uncommon in the literature, mostly due to requirement of multidisciplinary effort. Therefore, through eBook on closed-loop systems for next-generation neuroprostheses, we encourage an active discussion among neurobiologists, electrophysiologists, bioengineers, computational neuroscientists and neuromorphic engineers. This eBook aims to facilitate this process by ordering the 25 contributions of this research in which we highlighted in three different parts: (A) Optimization of different blocks composing the closed-loop system, (B) Systems for neuromodulation based on DBS, EMG and SNN and (C) Closed-loop BMIs for rehabilitation.

neuromodulation --- closed-loop experiments --- artificial spiking neural network --- neuroprostheses --- neuronal circuits --- stimulation

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In light of climate change and allied changes to marine ecosystems, mathematical models have become an important tool to examine processes and predict phenomena from local through to global scales. In recent years model studies, laboratory experiments and a better ecological understanding of the pelagic ecosystem have enabled advancements on fundamental challenges in oceanography, including marine production, biodiversity and anticipation of future conditions in the ocean. This research topic presents a number of studies that investigate functionally diverse organism in a dynamic ocean through diverse and novel modeling approaches.

Climate Change --- ecosystems --- Mixotroph --- food webs --- Phytoplankton --- virus-host --- biogeochemistry --- Zooplankton --- Predictive capability --- Microbial loop

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

α-conotoxins --- Three-finger Ly6 proteins --- nicotinic receptors --- Cys-loop receptors --- Voltage-gated ion channels --- receptor complexes --- drug design

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Modern power and energy systems are characterized by the wide integration of distributed generation, storage and electric vehicles, adoption of ICT solutions, and interconnection of different energy carriers and consumer engagement, posing new challenges and creating new opportunities. Advanced testing and validation methods are needed to efficiently validate power equipment and controls in the contemporary complex environment and support the transition to a cleaner and sustainable energy system. Real-time hardware-in-the-loop (HIL) simulation has proven to be an effective method for validating and de-risking power system equipment in highly realistic, flexible, and repeatable conditions. Controller hardware-in-the-loop (CHIL) and power hardware-in-the-loop (PHIL) are the two main HIL simulation methods used in industry and academia that contribute to system-level testing enhancement by exploiting the flexibility of digital simulations in testing actual controllers and power equipment. This book addresses recent advances in real-time HIL simulation in several domains (also in new and promising areas), including technique improvements to promote its wider use. It is composed of 14 papers dealing with advances in HIL testing of power electronic converters, power system protection, modeling for real-time digital simulation, co-simulation, geographically distributed HIL, and multiphysics HIL, among other topics.

design methodology --- FPGA --- hardware in the loop --- LabVIEW --- real-time simulation --- power converters --- HIL --- CHIL --- integrated laboratories --- real-time communication platform --- power system testing --- co-simulation --- geographically distributed simulations --- power system protection and control --- holistic testing --- lab testing --- field testing --- PHIL --- PSIL --- pre-certification --- smart grids --- standards --- replica controller --- TCSC --- DPT --- testing --- control and protection --- large-scale power system --- voltage regulation --- distribution system --- power hardware-in-the-loop --- distributed energy resources --- extremum seeking control --- particle swarm optimization --- state estimation --- reactive power support --- volt–VAR --- model-based design --- multi physics simulation --- marine propulsion --- ship dynamic --- DC microgrid --- shipboard power systems --- under-frequency load shedding --- intelligent electronic device --- proof of concept --- hardware-in-the-loop testing --- real-time digital simulator --- frequency stability margin --- rate-of-change-of-frequency --- geographically distributed real-time simulation --- remote power hardware-in-the-Loop --- grid-forming converter --- hardware-in-the-loop --- simulation fidelity --- energy-based metric --- energy residual --- quasi-stationary --- Hardware-in-the-Loop (HIL) --- Control HIL (CHIL) --- Power HIL (PHIL) --- testing of smart grid technologies --- power electronics --- shifted frequency analysis --- dynamic phasors --- real-time hybrid-simulator (RTHS) --- hybrid simulation --- hardware-in-the-loop simulation (HILS) --- dynamic performance test (DPT) --- real-time simulator (RTS) --- testing of replicas --- multi-rate simulation --- EMT --- control --- inverters --- inverter-dominated grids --- power system transients --- predictive control --- hydro-electric plant --- variable speed operation --- ‘Hill Charts’ --- reduced-scale model --- testing and validation