Modelling and control of dual-motor all-wheel drive electric vehicles using energetic macroscopic representation

Abstract: This paper presents an Energetic Macroscopic Representation (EMR) of Electric Vehicles (EVs) with dual-motor allwheel drive (AWD). The dynamic process of the tire-road system is considered to provide the traction force for each wheel of the studied EV. The two traction motors of the studied system including the induction motor (IM) and the permanent magnet synchronous motor (PMSM) are detailed by dynamic models. The studied EV is organized to describe the model and to design the control scheme in a more convenient way using EMR. This model is used in simulation for studying the slip phenomenon of EVs in different scenarios. The traction force is presented and analyzed for a dual-motor vehicle.Communication présentée lors du congrès international tenu conjointement par Canadian Society for Mechanical Engineering (CSME) et Computational Fluid Dynamics Society of Canada (CFD Canada), à l’Université de Sherbrooke (Québec), du 28 au 31 mai 2023

Electric powertrain modeling and control in vehicular applications using energetic macroscopic representation

Abstract: The Energetic Macroscopic Representation (EMR) is a formalism that focuses on the energetic exchanges of various systems that are connected together. It allows to represent the macroscopic interactions between them through an intuitive graphical representations. The EMR formalism is based on the concept of a macroscopic energy balance, which is used to describe the overall energy conversion process. It is useful for representing the physical behavior of complex energy systems, such as power plants, solar pannels, or vehicle powertrains. The graphical representation allows easier understanding and direct control of the system behavior, as well as the ability to quickly identify and troubleshoot potential model issues. Additionally, the EMR formalism can be used to develop control systems for energy systems, such as for optimal operation and energy efficiency. This paper will present the principles of EMR and introduce several vehicle powertrain engineering studies using EMR.Communication présentée lors du congrès international tenu conjointement par Canadian Society for Mechanical Engineering (CSME) et Computational Fluid Dynamics Society of Canada (CFD Canada), à l’Université de Sherbrooke (Québec), du 28 au 31 mai 2023

The SIMPLE Phase II Dark Matter Search

Phase II of SIMPLE (Superheated Instrument for Massive ParticLe Experiments) searched for astroparticle dark matter using superheated liquid C$_{2}$ClF$_{5}$ droplet detectors. Each droplet generally requires an energy deposition with linear energy transfer (LET) $\gtrsim$ 150 keV/$\mu$m for a liquid-to-gas phase transition, providing an intrinsic rejection against minimum ionizing particles of order 10$^{-10}$, and reducing the backgrounds to primarily $\alpha$ and neutron-induced recoil events. The droplet phase transition generates a millimetric-sized gas bubble which is recorded by acoustic means. We describe the SIMPLE detectors, their acoustic instrumentation, and the characterizations, signal analysis and data selection which yield a particle-induced, "true nucleation" event detection efficiency of better than 97% at a 95% C.L. The recoil-$\alpha$ event discrimination, determined using detectors first irradiated with neutrons and then doped with alpha emitters, provides a recoil identification of better than 99%; it differs from those of COUPP and PICASSO primarily as a result of their different liquids with lower critical LETs. The science measurements, comprising two shielded arrays of fifteen detectors each and a total exposure of 27.77 kgd, are detailed. Removal of the 1.94 kgd Stage 1 installation period data, which had previously been mistakenly included in the data, reduces the science exposure from 20.18 to 18.24 kgd and provides new contour minima of $\sigma_{p}$ = 4.3 $\times$ 10$^{-3}$ pb at 35 GeV/c$^{2}$ in the spin-dependent sector of WIMP-proton interactions and $\sigma_{N}$ = 3.6 $\times$ 10$^{-6}$ pb at 35 GeV/c$^{2}$ in the spin-independent sector. These results are examined with respect to the fluorine spin and halo parameters used in the previous data analysis.Comment: 20 pages, 19 figures; accepted Physical Review

A Close Nuclear Black Hole Pair in the Spiral Galaxy NGC 3393

The current picture of galaxy evolution advocates co-evolution of galaxies and their nuclear massive black holes (MBHs), through accretion and merging. Quasar pairs (6,000-300,000 light-years separation) exemplify the first stages of this gravitational interaction. The final stages, through binary MBHs and final collapse with gravitational wave emission, are consistent with the sub-light-year separation MBHs inferred from optical spectra and light-variability of two quasars. The double active nuclei of few nearby galaxies with disrupted morphology and intense star formation (e.g., NGC 6240 and Mkn 463; ~2,400 and ~12,000 light-years separation respectively) demonstrate the importance of major mergers of equal mass spirals in this evolution, leading to an elliptical galaxy, as in the case of the double radio nucleus (~15 light-years separation) elliptical 0402+379. Minor mergers of galaxies with a smaller companion should be a more common occurrence, evolving into spiral galaxies with active MBH pairs, but have hitherto not been seen. Here we report the presence of two active MBHs, separated by ~430 light-years, in the Seyfert galaxy NGC 3393. The regular spiral morphology and predominantly old circum-nuclear stellar population of this galaxy, and the closeness of the MBHs embedded in the bulge, suggest the result of minor merger evolution.Comment: Preprint (not final) version of a paper to appear in Natur

Phylogenenetic approach of the section Bulbocodii D.C. of Narcissus based on cpDNA. A case of taxonomic inflation ?

In this paper, we analyzed the phylogeny of the section Bulbocodii (genus Narcissus; Amarillydaceae) using the matK and trnL-F fragments of cpDNA in order to review the validity of the recognized taxa. Our results indicate that Narcissus obesus should be considered a valid species, and that N. blancoi is a distinct taxon. In addition, seven previously recognized species, N. juressianus, N. subnivalis, N. graellsii, N. conspicuus, N. citrinus, N. nivalis, and N. quintanilhae, should be assigned to an infraspecific rank under N. bulbocodium, as they are not valid species. In addition, we analyzed the distribution of the three morphological characters widely used in the systematics of this section and found that their variation does not agree with the phylogenetic results, rendering these characters limited taxonomical utility. This result suggests that the section Bulbocodii shows high morphological lability, which can explain the proliferation of nominal speciesinfo:eu-repo/semantics/publishedVersio

Risk response strategies for collaborative university-industry R&D funded programs

Universities are centers of knowledge in our societies and their role when it comes to innovation has become more important over the years. Companies have several reasons to engage in research collaborations with universities, namely to gain access to innovative technologies. University-Industry R&D collaborations are expected to play an important role in regional economies, and to fulfill the industry’s demand for innovative products, technologies and processes. However, the knowledge on what are the potential risks resulting from these collaborations and the risk response strategies to reduce the negative risk impacts and to enhance positive risk impacts is still limited. Thus, this paper aims to fill the gap in literature when it comes to risk identification and risk responses’ planning, by identifying, based on a case study analysis, 19 potential risks and 53 potential risk response strategies.INCT-EN - Instituto Nacional de Ciência e Tecnologia para Excitotoxicidade e Neuroproteção(SFRH/BPD/111033/2015

REPENSANDO A TRAJETÓRIA DO CURSO DE ESPECIALIZAÇÃO EM PRECEPTORIA RESIDÊNCIA MÉDICA E PRECEPTORIA NO SUS E SEUS IMPACTOS NA VIDA PROFISSIONAL/NA VIDA ACADÊMICA

Esse trabalho teve como objetivo descrever e discutir a trajetória de docentes do curso de Medicina da Universidade Estadual de Santa Cruz nos Cursos de Especialização Preceptoria em Residência Médica e Preceptoria no SUS, promovidos pelo Instituto Sírio Libanês Ensino e Pesquisa, bem como analisar os impactos da aprendizagem na vida profissional dos mesmos. Além disso, apresentar o relato do percurso trilhado em busca de conhecimentos, assim como o registro das experiências, as percepções acerca do processo de aprendizagem e seus efeitos na prática profissional. O caminho metodológico realizado foi constituído a partir da descrição das atividades educacionais propostas pelo curso, entre elas: situação problema, narrativa, oficina, compartilhamento da viagem, aprendizagem autodirigida, portfólio e projeto aplicativo. Buscou-se estabelecer um diálogo entre as experiências vivenciadas durante o período de março a novembro de 2017 nos referidos cursos de pós-graduação com o referencial teórico sobre metodologias ativas no processo ensino-aprendizagem, com a literatura referente ao exercício da preceptoria no Sistema Único de Saúde e outros aportes teóricos sobre metodologias inovadoras. Conclui -se que os cursos instigaram a reflexão e apontaram pistas para auxiliar na formação de profissionais de saúde, forneceram apoio pedagógico para reiterar as Diretrizes Curriculares Nacionais como modelo no Curso de Graduação em Medicina da Universidade Estadual de Santa Cruz (UESC), solidificar o uso de metodologias ativas de ensino-aprendizagem e fortalecer a articulação ensino-serviço-comunidade e a adoção do paradigma da integralidade. Enfim, forneceram subsídios para adquirir o perfil de competência de preceptoria estabelecido pela Instituição formadora