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Journal articles on the topic 'Motor configurations'

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1

Korkosz, Mariusz, Jan Prokop, Bartlomiej Pakla, Grzegorz Podskarbi, and Piotr Bogusz. "Analysis of Open-Circuit Fault in Fault-Tolerant BLDC Motors with Different Winding Configurations." Energies 13, no. 20 (2020): 5321. http://dx.doi.org/10.3390/en13205321.

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In this study, tests were carried out on a brushless permanent magnet DC motor with different winding configurations. Three configurations were compared: star, delta and combined star–delta. A mathematical model was constructed for the motor, taking into account the different winding configurations. An analysis of the operation of the motor in the different configurations was performed, based on numerical calculations. The use of different winding configurations affects the properties of the motor. This is significant in the case of the occurrence of various fault states. Based on numerical ca
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2

Hwang, Chang Chou, Hsing Cheng Chang, Ming Te Ho, and Cheng Tsung Liu. "Design Comparison of Fractional-Slot IPM Machine Types for an Electric Power Steering Application." Materials Science Forum 670 (December 2010): 243–51. http://dx.doi.org/10.4028/www.scientific.net/msf.670.243.

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This paper deals with the design comparison of interior permanent magnet (IPM) motors with fractional-slot winding configurations for an electric power steering (EPS) application. By making comparisons of these configurations based on cogging torque, torque ripple, average torque, and efficiency, an IPM rotor configuration has been chosen for use as a prototype motor. The Taguchi parameter method coupled with the finite element analysis (FEA) is employed to achieve the desired performance requirements within a reasonable geometry. To assess the rated current and thermal behavior of the motor,
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Pathak, Aditya, Ganesh Sethuraman, Sebastian Krapf, Aybike Ongel, and Markus Lienkamp. "Exploration of Optimal Powertrain Design Using Realistic Load Profiles." World Electric Vehicle Journal 10, no. 3 (2019): 56. http://dx.doi.org/10.3390/wevj10030056.

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The electrification of bus-based public transportation contributes to the goal of reducing the adverse environmental impacts caused by urban transportation. However, the penetration of electric vehicles has been slow due to their lower vehicle range and total costs in comparison to vehicles driven by internal combustion engines. By improving the powertrain efficiency, the total costs can be reduced for the same vehicle range. Therefore, this paper proposes a holistic design exploration approach to investigate and identify the optimal powertrain concept for electric city buses based on the comp
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Tuononen, Ari J., and Antti Lajunen. "Modal analysis of different drivetrain configurations in electric vehicles." Journal of Vibration and Control 24, no. 1 (2016): 126–36. http://dx.doi.org/10.1177/1077546316635857.

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This paper presents a modal analysis of different drivetrain configurations in electric vehicles; 1) an in – wheel motor, 2) direct drive, and 3) an electric motor with a reduction gear and a differential gear. A specific simulation model was developed to analyze the vibrations while taking into account the traction motor, possible mechanical reduction gears, and the driveshaft, as well as a Rigid Ring Model (RRM) to describe the tire. On the basis of the simulation results, the frequency responses were calculated for each drivetrain configuration and also for a non-drive, free-rolling tire. T
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5

Hoang, Ngoc-Tan, and Hong-Sen Yan. "On the Design of In-Wheel-Hub Motor Transmission Systems with Six-Link Mechanisms for Electric Vehicles." Energies 11, no. 11 (2018): 2920. http://dx.doi.org/10.3390/en11112920.

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Nowadays, there are several electric vehicles (EV) on the market, due to the innovation of technology that promotes new components such as batteries, transmissions, and electric motors. This study proposes the design procedure for the configuration synthesis and simulation of in-wheel-hub motor transmissions with six-link mechanisms. The synthesis process shows six mechanisms with six members and eight joints, 15 new clutchless motor transmissions, and 16 new clutched motor transmissions. A novel motor transmission with the possibility of synthesized configurations is chosen as a case to analy
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6

Boynov, K., J. J. H. Paulides, and E. A. Lomonova. "Comparative analysis of the SRM as an alternative to the PM motor for automotive applications." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 33, no. 5 (2014): 1599–612. http://dx.doi.org/10.1108/compel-09-2013-0296.

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Purpose – The purpose of this paper is to present comparative analysis of several configurations of the switched reluctance motor (SRM) for an in-wheel drive for a heavy-duty automotive series hybrid system. The SRM motor is regarded as one of the primary candidates for possible replacement of the permanent magnet (PM) motor. Design/methodology/approach – Three SRMs of 10/8, 12/10 and 12/8 configurations have been analysed, where the last two motors had the stator lamination profile taken from the existing PM motor. The analysis is performed using magnetostatic FEM and transient modelling tech
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7

Malfait, Nicole, Douglas M. Shiller, and David J. Ostry. "Transfer of Motor Learning across Arm Configurations." Journal of Neuroscience 22, no. 22 (2002): 9656–60. http://dx.doi.org/10.1523/jneurosci.22-22-09656.2002.

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Chen, Yan-song, I.-Ming Chen, and Tyng Liu. "A design approach for multi-configuration hybrid transmission mechanisms." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 12 (2020): 2744–58. http://dx.doi.org/10.1177/0954407020924981.

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Several hybrid architectures have been widely used in hybrid electric vehicles. For example, power-split architecture brings seamless operation, while parallel architecture makes the internal combustion engine directly drive the wheel. To combine the advantages of various architectures, this study aims to develop a design approach to create a transmission mechanism that has multiple configurations and uses these configurations to achieve several hybrid architectures. First, this study standardized hybrid transmission mechanisms using the Function Power Graph; this powerful and intuitive tool i
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9

Shen, Jianxin, Kang Wang, Dan Shi, Canfei Wang, and Mengjia Jin. "Optimal design of low-cost IPM AC motor." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 33, no. 5 (2014): 1587–98. http://dx.doi.org/10.1108/compel-09-2013-0292.

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Purpose – The purpose of this paper is to present the optimal design of a low-cost interior permanent magnet (IPM) alternating current (AC) motor. It examines the influence of the permanent magnet (PM) materials, and proposes a simple and practical method of optimizing the air-gap field to achieve sinusoidal back electromotive force (EMF), and to reduce the cogging torque. Design/methodology/approach – IPM AC motors with different magnet materials and various topologies are comparatively studied. Finite element method (FEM) is used to predict the performances of these designs. Material costs a
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10

de Freitas, Roberto M., Atsushi Sasaki, Dimitry G. Sayenko, et al. "Selectivity and excitability of upper-limb muscle activation during cervical transcutaneous spinal cord stimulation in humans." Journal of Applied Physiology 131, no. 2 (2021): 746–59. http://dx.doi.org/10.1152/japplphysiol.00132.2021.

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We examined selectivity and excitability of motor activation in multiple upper-limb muscles during cervical transcutaneous spinal cord stimulation with different cathode and anode configurations. Hand muscles were more activated when the cathode was configured over the T1 vertebra compared with C6 and C7 locations. Higher stimulation intensities were required to activate distal hand muscles than proximal arm muscles. Finally, configuration of anode over anterior neck elicited larger responses compared with other configurations.
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11

Laskaris, Konstantinos, Effrosyni Theodorou, Vasilios Papanikolaou, and Antonios Kladas. "High Efficiency Permanent Magnet Wheel Motor Design for Light Electric Vehicle Applications." Materials Science Forum 721 (June 2012): 313–18. http://dx.doi.org/10.4028/www.scientific.net/msf.721.313.

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Permanent magnet synchronous machines with non-overlapping concentrated fractional-slot windings present certain improved electrical characteristics compared to full pitch windings configurations. This paper describes the design process and construction of two 10-pole permanent magnet synchronous motors, featuring full-pitch and fractional-pitch windings. The paper compares these two configurations in terms of performance and efficiency. Both motors have been designed for direct-drive applications with low speed and high efficiency capability and are intended to be used as a traction drive in
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12

Rogova, Olga. "Electromagnetic Motor with an Active Teeth-Slot Zone for Vibration Technologies." Applied Mechanics and Materials 792 (September 2015): 67–72. http://dx.doi.org/10.4028/www.scientific.net/amm.792.67.

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The paper describes finding magnetic system rational geometrical ratios for a linear cylinder electromagnetic motor with the active teeth-slot zone. Rational ratios were found with finite-elements simulation and analytical derivations with respect to motor efficiency. The rational geometrical ratios ranges have been found for the inductor active volume. The investigation results can be widely used in design of electromagnetic motors with various teeth-slot zone configurations.
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13

Adamski, Bartłomiej, and Krzysztof Wrobel. "Analysis of the influence of phase supply angular range on the parameters of a switched reluctance motor." ITM Web of Conferences 28 (2019): 01035. http://dx.doi.org/10.1051/itmconf/20192801035.

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The paper presents the results of studies on the impact of the angular range of phase supply on the parameters of a drive based on a switched reluctance motor. The studies were carried out for a drive with a three-phase motor supplied from a modified power supply system, enabling changes in the phase winding configuration. The paper presents the results obtained on the basis of calculations in a simulation model of the drive in the Matlab/Simulink environment for serial and parallel winding configurations.
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14

Mawardi, Muhamad Iqbal, Bertho Tantular, and Resa Septiani Pontoh. "PENERAPAN CONFIGURAL FREQUENCY ANALYSIS (CFA) UNTUK MENENTUKAN KARAKTERISTIK USER DAN NON USER MOTOR X DI KOTA CIREBON (Studi Kasus PT. XYZ)." Jurnal Ilmiah Matematika dan Pendidikan Matematika 9, no. 2 (2017): 75. http://dx.doi.org/10.20884/1.jmp.2017.9.2.2868.

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ABSTRACT. PT. XYZ has a role as the main dealer of motor X in West Java with marketing area in three cities: Bandung, Bekasi and Cirebon. The company survey always held every year about Brand Awareness & Image to users and non user motor X to know the characteristics of consumers. Based on the company report survey there was a decrease in the indicators of Top Of Mind Unit in Cirebon City for the user of 30.8% and for non users of 9.8%. This study aims to determine the characteristics that cause the decline of the Top Of Mind Unit based on the configuration of user characteristics and non
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15

Nguyen, Cong Thanh, Paul D. Walker, Nong Zhang, and Jiageng Ruan. "Efficiency improvement of a novel dual motor powertrain for plug-in hybrid electric buses." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 7 (2020): 1869–82. http://dx.doi.org/10.1177/0954407019896888.

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Powertrain configuration plays an important role in the performance of plug-in hybrid electric buses. Current designs are the compromise between energy efficiency, dynamic ability, shifting smoothness and manufactural cost. To balance the above requirements, this research proposes a novel dual motor powertrain for plug-in hybrid electric buses. The efficiency improvement is compared to the conventional plug-in parallel hybrid electric buses with a single motor powertrain. Parameter designs of system components guarantee two configurations equivalently. To maximize the benefits of the proposed
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16

Zabunov, Svetoslav, and Garo Mardirossian. "Scales for measuring UAV micro-motor static thrust." Aerospace Research in Bulgaria 30 (2018): 96–102. http://dx.doi.org/10.3897/arb.v30.e08.

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With the advent of micro-sized unmanned helicopters and airplanes weighing under 250 g certain needs for measurement instruments and setups are emerging. The authors have identified the lack of micro-motor measurement instruments and more specifically a static thrust gauge device. For this reason, scales to measure static motor thrust was advised and further developed as a laboratory setup. The motors that are subject to testing with the described instrument are the brushed micro-sized coreless electric motors, well suited for micro-drones with total weight under 250 g. The scale is fitting di
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17

Bonkhoff, Anna K., Flor A. Espinoza, Harshvardhan Gazula, et al. "Acute ischaemic stroke alters the brain’s preference for distinct dynamic connectivity states." Brain 143, no. 5 (2020): 1525–40. http://dx.doi.org/10.1093/brain/awaa101.

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Abstract Acute ischaemic stroke disturbs healthy brain organization, prompting subsequent plasticity and reorganization to compensate for the loss of specialized neural tissue and function. Static resting state functional MRI studies have already furthered our understanding of cerebral reorganization by estimating stroke-induced changes in network connectivity aggregated over the duration of several minutes. In this study, we used dynamic resting state functional MRI analyses to increase temporal resolution to seconds and explore transient configurations of motor network connectivity in acute
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18

Trommershauser, J. "Sensory-motor choices among configurations with variable expected gain." Journal of Vision 5, no. 8 (2010): 127. http://dx.doi.org/10.1167/5.8.127.

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19

Ramesh, A., O. Chandra Sekhar, and M. Siva Kumar. "A Novel Three Phase Multilevel Inverter with Single Dc Link For Induction Motor Drive Applications." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 2 (2018): 763. http://dx.doi.org/10.11591/ijece.v8i2.pp763-770.

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All industrial drives need a controlled output and it can be achieved by controlling the input supply. In this regard, the inverter circuit plays an important role in the applications of industrial drives. The industrial drives are operated at high rated power and the conventional inverters cannot be applicable for high power demands because of the large dV/dt (rate of change of voltage) and more switching losses. Therefore, multilevel inverters are introduced for high power-medium voltage applications. For all AC drives the MLIs are reliable in operation. This MLI topology also reduces the ha
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20

Demas, Nicholaos G., Robert A. Erck, Cinta Lorenzo-Martin, Oyelayo O. Ajayi, and George R. Fenske. "Experimental Evaluation of Oxide Nanoparticles as Friction and Wear Improvement Additives in Motor Oil." Journal of Nanomaterials 2017 (2017): 1–12. http://dx.doi.org/10.1155/2017/8425782.

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The effect of two nanoparticle oxides on friction and wear was studied under laboratory test conditions using a reciprocating test machine and two test configurations. The addition of these nanoparticles in base stock oil under certain conditions reduced the coefficient of friction and improved wear, but that depended on the test configuration. Examination of the rubbed surfaces showed the pronounced formation of a tribofilm in some cases, while polishing on the surface was also observed in other cases. Contact configuration is important when oxide nanoparticles are being evaluated and the con
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21

Krasopoulos, Christos, Minos Beniakar, and Antonios G. Kladas. "Comparison of Three Different In-Wheel SMPM Motor Configurations Based on the Urban NEDC." Materials Science Forum 856 (May 2016): 233–38. http://dx.doi.org/10.4028/www.scientific.net/msf.856.233.

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Design optimization of traction motors for light electric vehicles over an operating point is an adequate way of achieving higher overall efficiency under a standard driving scheme of the vehicle. However, this work proves that a direct comparison of similar candidates regarding efficiency values under a predetermined operating point does not yield sufficient information on the economy achieved on a specific driving pattern per candidate. This paper presents a comparative study on three similar surface mounted permanent magnet in-wheel motor configurations. On a first step, these configuration
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Cavalcanti, João Zugaib, Iago Oliveira Gomes, Abrahão Fontes Baptista, Katia Nunes Sá, Marcos Almeida Matos, and Rita de Cássia Saldanha De Lucena. "Neurophysiological basis of a new electrode configuration to potentiate the tDCS: Protocols for upper limbs." Revista Pesquisa em Fisioterapia 7, no. 3 (2017): 418–26. http://dx.doi.org/10.17267/2238-2704rpf.v7i3.1559.

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Transcranial Direct Current Stimulation (tDCS) uses a direct electrical current to modulate the activity of cortical neurons. Anodal tDCS (positive pole) increases the excitability of cortical neurons, while cathodic tDCS (negative pole) reduces it. However, when applied in the peripheral nervous system the effects are the opposite of cranial application. Furthermore, when central and peripheral stimuli are used concomitantly, their effects can be summed up. This has been demonstrated by combining tDCS with other forms of sensory peripheral stimulation. We propose a new electrode configuration
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Pietrosimone, Brian G., Noelle M. Selkow, Christopher D. Ingersoll, Joseph M. Hart, and Susan A. Saliba. "Electrode Type and Placement Configuration for Quadriceps Activation Evaluation." Journal of Athletic Training 46, no. 6 (2011): 621–28. http://dx.doi.org/10.4085/1062-6050-46.6.621.

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Context: The ability to accurately estimate quadriceps voluntary activation is an important tool for assessing neuromuscular function after a variety of knee injuries. Different techniques have been used to assess quadriceps volitional activation, including various stimulating electrode types and electrode configurations, yet the optimal electrode types and configurations for depolarizing motor units in the attempt to assess muscle activation are unknown. Objective: To determine whether stimulating electrode type and configuration affect quadriceps central activation ratio (CAR) and percentage
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Morales-Morales, Josefa, Miguel A. Rivera-Cruz, Pedro Cruz-Alcantar, Horacio Bautista Santos, Ilse Cervantes-Camacho, and Vladimir A. Reyes Herrera. "Performance Analysis of a Hybrid Electric Vehicle with Multiple Converter Configuration." Applied Sciences 10, no. 3 (2020): 1074. http://dx.doi.org/10.3390/app10031074.

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The use of electric vehicles and their various configurations is seen as a major alternative in efforts towards reducing pollutant emissions from motor vehicles that continue to use fossil fuels. Electric transport technology presents more efficient means of energy conversion in vehicles: electric (EV), hybrid (VH), and hybrid electric (HEV) vehicles. For example, the energy storage system in the latter can be made up of ultracapacitors (UCs), batteries (Bs), and fuel cells. This work focuses on HEVs powered by batteries and ultracapacitors. In particular, the multiple converter configuration
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Lemay, Michel A., and Warren M. Grill. "Modularity of Motor Output Evoked By Intraspinal Microstimulation in Cats." Journal of Neurophysiology 91, no. 1 (2004): 502–14. http://dx.doi.org/10.1152/jn.00235.2003.

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We studied the forces produced at the cat's hindpaw by microstimulation of the ipsi- and contralateral lumbar spinal cord in spinal intact α-chloralose anesthetized ( n = 3) or decerebrate ( n = 3) animals. Isometric force and EMG responses were measured at 9-12 limb configurations, with the paw attached to a force transducer and with the hip and femur fixed. The active forces elicited at different limb configurations were summarized as force fields representing the sagittal plane component of the forces produced at the paw throughout the workspace. The forces varied in amplitude over time but
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Zhao, Wenliang, Cong Liu, Yujing Li, Xue Fan, and Xiuhe Wang. "Design and analysis of a high-performance surface inset permanent magnet motor with asymmetrical rotor." International Journal of Applied Electromagnetics and Mechanics 64, no. 1-4 (2020): 211–20. http://dx.doi.org/10.3233/jae-209324.

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This paper presents a novel design strategy for surface inset permanent magnet (SIPM) motors to suppress torque pulsations and maintain the high output torque by integrating the magnet skewing and asymmetrical rotor configurations. The magnet skewing is implemented within one magnet pole pitch to reduce cogging torque by avoiding excessive torque degradation, and the asymmetrical rotor is designed to improve the utilization of the torque components, thus to compensate the decreased torque due to the magnet skewing. To highlight the advantages of the proposed motor, a conventional SIPM motor is
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Tomita, Yosuke, Anatol G. Feldman, and Mindy F. Levin. "Referent control and motor equivalence of reaching from standing." Journal of Neurophysiology 117, no. 1 (2017): 303–15. http://dx.doi.org/10.1152/jn.00292.2016.

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Motor actions may result from central changes in the referent body configuration, defined as the body posture at which muscles begin to be activated or deactivated. The actual body configuration deviates from the referent configuration, particularly because of body inertia and environmental forces. Within these constraints, the system tends to minimize the difference between these configurations. For pointing movement, this strategy can be expressed as the tendency to minimize the difference between the referent trajectory (RT) and actual trajectory (QT) of the effector (hand). This process ma
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Meng, Lingsheng, Yuanji Zou, Yudi Qin, and Zhichao Hou. "A new electric wheel and optimization on its suspension parameters." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 12 (2020): 2759–70. http://dx.doi.org/10.1177/0954407020921736.

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Hub-driven technology with its many advantages has become a potential transformation technology in the automotive industry. In order to inhibit the negative effects of the in-wheel motor, a new electric wheel configuration was presented with two-stage suspensions, and optimization was conducted for the suspension parameters. With the specially introduced flexible transmission elements and motor suspension, the electric wheel is capable of achieving power transmission and vertical vibration isolation simultaneously. A quarter-vehicle model was established, and vehicle performance-related indice
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Mattos, D. J. S., M. L. Latash, E. Park, J. Kuhl, and J. P. Scholz. "Unpredictable elbow joint perturbation during reaching results in multijoint motor equivalence." Journal of Neurophysiology 106, no. 3 (2011): 1424–36. http://dx.doi.org/10.1152/jn.00163.2011.

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Motor equivalence expresses the idea that movement components reorganize in the face of perturbations to preserve the value of important performance variables, such as the hand's position in reaching. A formal method is introduced to evaluate this concept quantitatively: changes in joint configuration due to unpredictable elbow perturbation lead to a smaller change in performance variables than expected given the magnitude of joint configuration change. This study investigated whether motor equivalence was present during the entire movement trajectory and how magnitude of motor equivalence was
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Zieleźnicki, Jan, Adam Grzybowski, and Janusz Błaszczyk. "Comparison Of Selected Characteristics Of Brushless DC Motors For Optoelectronic Sensors Positioning." Research Works of Air Force Institute of Technology 36, no. 1 (2015): 159–70. http://dx.doi.org/10.1515/afit-2015-0022.

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Abstract Thanks to their advantageous properties such as higher durability, reliability and wide scope of speed achievable with a given load, brushless DC motors are often used in Line-of-Sight stabilization systems of the optoelectronic aircraft gimbals. Since there are many sub-types and configurations of such motors, choosing the optimal structure is not a trivial issue. This paper presents the selection process of a motor with properties that would make it ideal for use in an optoelectronic gimbal drive.
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Patsios, Charalampos, Minos E. Beniakar, Antonios G. Kladas, and John Prousalidis. "A Simple and Efficient Parametric Design Approach for Marine Electrical Machines." Materials Science Forum 792 (August 2014): 367–72. http://dx.doi.org/10.4028/www.scientific.net/msf.792.367.

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In this paper a parametric design procedure of electrical machines used in naval propulsion systems is developed. The algorithm uses a series of design characteristics i.e. the type of the machine, the winding configuration and key geometrical properties, as parameters and is implemented on MATLAB® script allowing for a straightforward incorporation with other development tools. Using the proposed algorithm, two of the most common machine configurations involved in marine electrical propulsion systems i.e. the Induction Motor and the Synchronous Permanent Magnet Motor, are designed and 2D fini
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Haggard, Patrick, Chris Miall, and John Stein. "Twisted pairs: Does the motor system really care about joint configurations?" Behavioral and Brain Sciences 18, no. 4 (1995): 758–61. http://dx.doi.org/10.1017/s0140525x00040838.

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AbstractExtrapersonal frames of reference for aimed movements are representationally convenient. They may, however, carry associated costs when the movement is executed in terms of the complex coordination of multiple joints they require. Studies that have measured both fingertip and joint paths suggest the motor systems may seek a compromise between simplicity of extrapersonal spatial representation and computational simplicity of multi-joint execution.
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Rajesh, V. R., and T. K. Biju. "Effect of Geometrical Parameters on the Performance of Linear Motor for a Stirling Cooler." International Journal of Air-Conditioning and Refrigeration 25, no. 04 (2017): 1750031. http://dx.doi.org/10.1142/s2010132517500316.

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Stirling coolers are becoming more popular in the area of remote sensing and space applications because of their inherent characteristics, viz., long life, high reliability, less weight, etc. In order to have a good onboard performance, the selection of the compressor drive system is crucial. The current development is to replace the conventional crank-driven compressor with a linear motor-driven compressor. Linear motors are simple devices in which axial forces are generated by current flowing in a magnetic field. This paper explores the possibility of employing various combinations of compon
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Cheng, Ming, Rui Wu Cao, Wei Hua, and Xin Wang. "A New Linear Double Salient Permanent Magnet Motor with Complementary Winding." Applied Mechanics and Materials 416-417 (September 2013): 115–20. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.115.

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In this paper, two novel structures of linear double salient permanent magnet (LDSPM) motor having magnets and armature windings in primary are proposed and compared. Firstly, the design principles of both motors are presented. Then, for a fair comparison, two motors are designed based on the same primary dimensions including the slot area, teeth number, pole pitch, permanent magnet volumes and coils number per phase, while the stator pole pitch and the primary structure are different. Finally, the configurations and static characteristics of both motors are critically compared based on finite
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Grebenikov, V. V., R. V. Gamaliia, and S. A. Dadychyn. "COMPARATIVE ANALYSIS OF MAGNETIC SYSTEMS OF PERMANENT MAGNET MOTORS FOR TRAM." Tekhnichna Elektrodynamika 2021, no. 5 (2021): 27–37. http://dx.doi.org/10.15407/techned2021.05.027.

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A numerical study of eight configurations of magnetic systems of electric motors with permanent magnets for driving a tram was carried out. The permanent magnet electric motor can be used as a high-speed electric drive to replace the existing DC electric drive of a tram, and as a low-speed gearless electric drive of a new generation tram. The most promising configurations of magnetic systems of electric motors with permanent magnets for tram drive have been determined. By varying the geometrical and winding parameters of each of the investigated models of electric motors, the mechanical charac
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Elhomdy, Esmail, Zheng Liu, and Guofeng Li. "Thermal and Mechanical Analysis of a 72/48 Switched Reluctance Motor for Low-Speed Direct-Drive Mining Applications." Applied Sciences 9, no. 13 (2019): 2722. http://dx.doi.org/10.3390/app9132722.

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In the process of electric motor design, it is essential to predict and provide an accurate thermal and mechanical model. The aim of this research is to improve the thermal and mechanical performance—which is implemented into a 72/48 switched reluctance motor (SRM) with 75 kW—of a low-speed direct-drive mining system (pulverizer). Thermal analysis of the SRM requires a deep understanding of the coolant behavior and the thermal mechanism in the motor. Computational fluid dynamics (CFD) based finite element analysis (FEA) was carried out in order to precisely visualize and estimate fluid state a
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Srinivasan, S., S. Manikandan, D. Govindaswamy, and K. Ravichandran. "A Modulation Technique for Sensorless Control of Switched Reluctance Motor." Defence Science Journal 69, no. 3 (2019): 223–29. http://dx.doi.org/10.14429/dsj.69.14409.

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The switched reluctance motor (SRM) uniquely bears several merits with respect to other motor configurations. Especially, the construction of the rotor is simple in the sense that it neither contains copper not contains permanent magnets. Because of this construction, likelihood of rotor’s failure is less than the other motor configurations. This makes this motor more suitable for harsh environments. On the flip side, this motor cannot directly operate with AC or DC power source and needs electronic commutation. For commutation, the information on instantaneous orientation of the rotor is esse
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Asef, Pedram, Ramon Bargallo, Andrew Lapthorn, Davide Tavernini, Lingyun Shao, and Aldo Sorniotti. "Assessment of the Energy Consumption and Drivability Performance of an IPMSM-Driven Electric Vehicle Using Different Buried Magnet Arrangements." Energies 14, no. 5 (2021): 1418. http://dx.doi.org/10.3390/en14051418.

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This study investigates the influence of the buried magnet arrangement on the efficiency and drivability performance provided by an on-board interior permanent magnet synchronous machine for a four-wheel-drive electric car with two single-speed on-board powertrains. The relevant motor characteristics, including flux-linkage, inductance, electromagnetic torque, iron loss, total loss, and efficiency, are analyzed for a set of six permanent magnet configurations suitable for the specific machine, which is controlled through maximum-torque-per-ampere and maximum-torque-per-voltage strategies. More
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Ngo and Hsieh. "Performance Analysis of Synchronous Reluctance Motor with Limited Amount of Permanent Magnet." Energies 12, no. 18 (2019): 3504. http://dx.doi.org/10.3390/en12183504.

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This paper analyzes the performance of a synchronous reluctance motor (SynRM) equipped with a limited amount of a permanent magnet (PM). This is conventionally implemented by inserting PMs in rotor flux barriers, and this is often called the PM-assisted SynRM (PMa-SynRM). However, common PMa-SynRMs could be vulnerable to irreversible demagnetization. Therefore, motor performance and PM demagnetization should be simultaneously considered, and this would require the PM to be properly arranged. In this paper, various rotor configurations are carefully studied and compared in order to maximize the
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Yan, Hao, Hongbo Wang, Peng Chen, et al. "Configuration Design of an Upper Limb Rehabilitation Robot with a Generalized Shoulder Joint." Applied Sciences 11, no. 5 (2021): 2080. http://dx.doi.org/10.3390/app11052080.

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For stroke patients with upper limb motor dysfunction, rehabilitation training with the help of rehabilitation robots is a social development trend. Existing upper limb rehabilitation robots have difficulty fully fitting the complex motion of the human shoulder joint and have poor human–robot compatibility. In this paper, based on the anatomical structure of the human upper limb, an equivalent mechanism model of the human upper limb is established. The configuration synthesis of the upper limb rehabilitation mechanism was carried out, a variety of shoulder joint man–machine closed-chain Θs and
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Franceschi, Alessandro, Nicolò Cavina, Riccardo Parenti, Maurizio Reggiani, and Enrico Corti. "Energy Management Optimization of a Dual Motor Lithium Ion Capacitors-Based Hybrid Super Sport Car." Applied Sciences 11, no. 2 (2021): 885. http://dx.doi.org/10.3390/app11020885.

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Nowadays, hybrid electric vehicles represent one of the main solutions for the reduction of greenhouse gases in the automotive sector. Alongside the reduction of CO2, hybrid electric vehicles serve as a strong alternative on drivability and performance to conventional internal combustion engine-based vehicles. Vehicles exist with various missions; super sport cars usually aim to reach peak performance and to guarantee a great driving experience to the driver, but great attention must also be paid to fuel consumption. According to the vehicle mission, hybrid electric vehicles can differ in the
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Liu, Xiang, Mian Li, and Min Xu. "A new anti-skid control method for electric vehicles using the motor torque and the wheel acceleration with experimental verification." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 231, no. 3 (2016): 347–59. http://dx.doi.org/10.1177/0954407016639444.

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Driving electric vehicles by electric motors can result in many unique advantages for dynamic control of electric vehicles. With the superior fast and accurate torque control performance of electric motors, electric vehicles, in particular, can achieve higher levels of safety and handling performance. A simple, effective and efficient anti-skid control method specified for electric vehicles is proposed in this paper by considering the real-world resistance factors. This method is developed on the basis of sensing and regulating a newly defined parameter, namely the ratio of the drive motor tor
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Yoshida, Eiichi, Satoshi Murata, Akiya Kamimura, Kohji Tomita, Haruhisa Kurokawa, and Shigeru Kokaji. "Evolutionary Motion Synthesis for a Modular Robot Using Genetic Algorithm." Journal of Robotics and Mechatronics 15, no. 2 (2003): 227–37. http://dx.doi.org/10.20965/jrm.2003.p0227.

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An evolutionary motion synthesis method using genetic algorithm (GA) is presented for self-reconfigurable modular robot M-TRAN designed to realize various robotic motions and three-dimensional structures. The proposed method is characterized by its capacity to derive feasible solutions for complex synthesis problem of M-TRAN through natural genetic representation. For this purpose, the behavior of the robot is described using a motion sequence including both the dynamic motions and configuration changes of the robot. It is a series of segments each of which can specify simultaneous motor actua
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Hernando, Miguel, Virgilio Gómez, Alberto Brunete, and Ernesto Gambao. "CFD Modelling and Optimization Procedure of an Adhesive System for a Modular Climbing Robot." Sensors 21, no. 4 (2021): 1117. http://dx.doi.org/10.3390/s21041117.

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Adhesion systems are very important in robots for infrastructure inspection (especially in vertical walls). They present the challenge of optimizing the ratio vacuum/power consumption in battery-powered robots. In this paper, a CFD (computer fluid dynamics) modelling and optimization process of a robot adhesion system is carried out to determine the best performing configuration in terms of vacuum and power consumption. Analytical and numerical models were developed to predict the behaviour of the system for different configurations. The models were validated, using test rig measurements, by c
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Magnard, Justine, Gilles Berrut, Catherine Couturier, Thomas Cattagni, Christophe Cornu, and Thibault Deschamps. "Perceptual Inhibition Is Not a Specific Component of the Sensory Integration Process Necessary for a Rapid Voluntary Step Initiation in Healthy Older Adults." Journals of Gerontology: Series B 75, no. 9 (2019): 1921–29. http://dx.doi.org/10.1093/geronb/gbz060.

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Abstract Objectives We investigated whether performing step initiation during a proprioceptive perturbation would require greater perceptual or motor inhibitory control in older adults. Method Fifty-two healthy adults (young: n = 26, mean age 22.5 years vs. older: n = 26, mean age 70.1 years) performed a stepping reaction time task, with different inhibition requirements (i.e., perceptual vs. motor inhibitory conflict), with two proprioceptive configurations: with and without application of Achilles tendon vibrations. Results Beyond a systematically greater stepping reaction time in older adul
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Manzone, Joseph X., Saba Taravati, Heather F. Neyedli, and Timothy N. Welsh. "Choices in a key press decision-making task are more optimal after gaining both aiming and reward experience." Quarterly Journal of Experimental Psychology 73, no. 12 (2020): 2197–216. http://dx.doi.org/10.1177/1747021820940620.

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When presented with two different target–penalty configurations of similar maximum expected gain (MEG), participants prefer aiming to configurations with more advantageous spatial, rather than more advantageous gain parameters—perhaps due to the motor system’s inherent prioritisation of spatial information during movements with high accuracy demands such as aiming. To test this hypothesis, participants in the present studies chose between target–penalty configurations via key presses to reduce the importance of spatial parameters of the response and performance-related feedback. Configurations
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Goldring, Sidney, Gary W. Harding, and Erik M. Gregorie. "Distinctive electrophysiological characteristics of functionally discrete brain areas: a tenable approach to functional localization." Journal of Neurosurgery 80, no. 4 (1994): 701–9. http://dx.doi.org/10.3171/jns.1994.80.4.0701.

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✓ The direct cortical response (DCR), an electrical potential recorded in the immediate vicinity of a surface cortical stimulus, shows a configuration in the primary sensory areas of animals that is different from the one observed in association cortex. This suggested the possibility that systematic study of the DCR in the human brain might reveal a profile of configurations in which the form of the response provides functional information about the gyri being tested. Studies were carried out in subhuman primates and in patients undergoing surgery for tumors, occult vascular malformations, and
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Kelson, Denean M., Sunwook Kim, Maury A. Nussbaum, and Divya Srinivasan. "Effects of Passive Upper-Extremity Exoskeleton Use on Motor Performance in a Precision Task." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 63, no. 1 (2019): 1084–85. http://dx.doi.org/10.1177/1071181319631437.

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Upper-extremity exoskeletons (UEXO) are promising interventions for reducing the physical demands of work performed with arms elevated (e.g., overhead work). In this study, we investigated the effects of passive UEXO use on motor performance and physical demands in a repetitive precision overhead task. Eleven participants completed repetitive tapping of targets in both vertically-aligned (targets above/below shoulder level) and horizontally-aligned (targets at shoulder level) configurations, using two UEXOs (Levitate AirframeTM and Eksobionics EksoVestTM) and in a no-device (control) condition
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Li, Tonghui, Bin Xie, Zhen Li, and Jiakun Li. "Design and Optimization of a Dual-Input Coupling Powertrain System: A Case Study for Electric Tractors." Applied Sciences 10, no. 5 (2020): 1608. http://dx.doi.org/10.3390/app10051608.

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In this study, a dual-input coupling powertrain system (DICPS) was proposed to improve the energy utilization efficiency of pure electric tractors (PETs). The working principles of the DICPS under different modes were analyzed and dynamic models were established. To study the influence of changing key parameters in the DICPS on the economic performance of PETs, a parameter-matching design method was proposed and the feasible region of the design parameters was determined according to the tractor’s dynamic performance. In addition, we put forward an energy management strategy (EMS) based on the
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Dieltiens, Sien, Frederik Debrouwere, Marc Juwet, and Eric Demeester. "Practical Application of the Whipple and Carvallo Stability Model on Modern Bicycles with Pedal Assistance." Applied Sciences 10, no. 16 (2020): 5672. http://dx.doi.org/10.3390/app10165672.

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Increasingly more people cycle with electrically-powered pedal assistance. The reduced pedalling effort attracts physically challenged people and seniors, who have a higher risk of falling. Since electric bicycles are heavier and the centre of masses are located higher, accidents happen easily. This study analyses the influence of the addition of a battery and motor unit on the stability behaviour of common bicycles for women. Based on market research, seven typical bicycle configurations are determined. Geometrics, mass values, and cycling postures are measured, and the theoretical stability
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