The parameters and antidemagnetization ability of permanent magnet-assisted synchronous reluctance motor (PMaSynRM), with concentrated distributed windings, was analyzed by the finite-element analysis. reason that winding PMaSynRM has worse performance in utilization torque pointed out, compared one. A method proposed to further improve PMaSynRM. magnetic circuit model multilayer PM structure, demagnetization case, established. operating point formulation, which can reach consistency layers,...

Over the years, League of Legends has released numerous character skins, with Lunar New Year skins standing out for their distinctive incorporation Chinese cultural elements. This study analyzes these across four dimensions: themes, styling, color schemes, and patterns, exploring how traditional aesthetics are adapted reimagined. The findings reveal that designs not only draw from art history but also incorporate futuristic technological elements, expanding expression time. As adaptations...

Each nation's healthcare system has its benefits and limitations. By examining the approaches of various nations, improvements could be identified for each nation. This review examines systems seven countries: United States, Kingdom, China, Russia, Tanzania, Australia, Brazil. The analysis covers key aspects nation: history, life expectancy, infant mortality rates, policies, insurance coverage costs, treatment efficacy, overall States operates on a for-profit model with high costs but...

The rotor conductor bars of the line-start synchronous reluctance motor (LS-SynRM) make have self-starting capability. distribution not only has a great impact on starting capability, but also affects steady-state performance LS-SynRM. LS-SynRM mainly depends inductance parameters. And directly variation parameters, especially d-axis inductance. Based characteristics LS-SynRM, an evaluation method based finite element analysis (FEA) is proposed to determine whether reasonable. First,...

As video traffic continues to dominate the Internet, interest in near-second low-latency streaming has increased. Existing platforms rely on using tens of seconds buffer offer a seamless experience. Striving for latency requires receiver make quick decisions regarding download bitrate and playback speed. To cope with challenges, we design new adaptive (ABR) scheme, Stallion, STAndard Low-LAtency vIdeo cONtrol. Stallion uses sliding window measure mean standard deviation both bandwidth...

The accurate calculation of stray load loss has an important contribution to increasing motor efficiency. can be regarded as the difference total iron losses and harmonic rotor cage between no conditions. A method combining general airgap field modulation theory (GAFMT) 2D finite element analysis (FEA) is proposed for calculating squirrel induction (SCIM). Firstly, amplitudes rotation speeds main space harmonics magnetic flux density are calculated based on GAFMT. And relationships these...

Cable-Driven Parallel Robots (CDPRs) have been proposed for a variety of applications such as material handling, rehabilitation, and instrumentation. However, the collision-free constraint CDPRs limits workspace feasible position anchor points. To address CDPRs, data-driven kinematic control scheme is developed enabling CDPR to its pose even if suffering collisions between cable base or end-effector. deal with collisions, utilizes motion model obtained based on data samples CDPR, rather than...

In this article, magnetic barriers setting on both sides of a low coercive force magnet (low-Hc) and forward/reverse magnetization process parallel memory motor are analyzed by using circuit method finite element analysis (FEA). The results show that the low-Hc magnets can weaken influence high (high-Hc) improve anti-demagnetization ability permanent magnets. At same time, has difficulties in forward magnetization. order to reduce difficulty motor, new type hybrid is proposed. structure...

Three-phase line-start synchronous reluctance motor (LS-SynRM) is started by asynchronous torque generated the rotor conductor bars, and runs synchronously inductance difference. In this article, structure of an LS-SynRM designed optimized, based on theory characteristics LS-SynRMs during starting steady-state operation. First, influence number flux barriers ratio dq-axis simulated, a better obtained. Second, according to transient theory, method separating each process proposed, main reason...

In order to improve the identification accuracy and tracking performance of parameter estimation, two improvements on model reference adaptive system (MRAS) based on-line estimation method with VSI nonlinearity compensation are proposed for permanent magnet synchronous machines (PMSMs) in this paper. Firstly, stator resistance inductance equations derived separately under stationary phase frame (αβ-axis). The stability is analyzed Lyapunov theorem. Secondly, exponent form saturation...

An equivalent circuit model of coaxial probes is derived directly from the intrinsic via model. As all higher-order evanescent modes have been included analytically in parasitic elements, only propagating mode needs to be considered by simplest uniform-current a probe numerical solvers such as flnite element method (FEM) or difierence time domain (FDTD). This avoid dense meshes sub-gridding techniques and greatly reduces computational efiorts for accurate calculation input impedance. The new...

This paper presents the topology optimization of a consequent-pole permanent magnet (PM) synchronous motor (CP-PMSM) aiming to be applied refrigerant compressor. Firstly, strategy for improving output torque CP-PMSM is discussed while taking into account PM shape and pole arc. Then new method based on normalized Gaussian network used optimize CP rotor considering both average ripples, through which novel obtained. The transient performance optimized model analyzed by 2D finite element...

To investigate the influences of different static eccentricity forms on vibration and noise permanent magnet synchronous motors (PMSMs), a theoretical model is developed in this manuscript with view researching order-frequency radial electromagnetic force. Then finite element 9s6p 12s8p PMSMs are built to conduct comparison force characteristics under such as no-eccentricity, non-coaxial elliptical eccentricity. And finally an experimental test conducted verify accuracy results. The results...

Three-phase line-start synchronous reluctance motor (LS-SynRM) combines the structural features of three-phase squirrel cage induction (SCIM) and motor, it can start up by asynchronous torque from rotor conductor bars, running due to flux barriers in synchronization. Firstly, this paper briefly introduces mathematical model starting characteristics LS-SynRM, Then, structure LS-SynRM is optimized. The influence number barrier layers proportion on dq-axis inductance simulated; an optimal...

Cable-Driven Parallel Robots (CDPRs) have been proposed for a variety of applications such as material handling and rehabilitation. However, the collision-free constraint CDPRs limits workspace position anchor points. This paper relaxes addresses modeling control CDPR allowing cable-edge collisions. An inverse kinematics model is established Based on model, sliding mode-based strategy pose collision. To evaluate effectiveness strategy, simulations collisions with two controllable degrees...

The paper aimed to find an accurate and fast model study the electromagnetic (EM) thermal (TH) filed coupling calculation for TH analysis in flux switching permanent magnet (FSPM) machine. It is extremely important know mechanism between EM field designers users of FSPM machines. Firstly, order properties silicon steel sheet with temperature, Epstein frame experiment was set up, where effect dc magnetic bias on core loss also considered. In save computation time, bidirectional based 2D...

Accurate knowledge of inductances are essential for successfully achieving high performance a PMSM and applying sensorless control. This paper presents novel method offline measuring the differential static PMSM. For this purpose, frequency current signal is injected in d- q-axis, respectively. As result, at different operating points can be obtained. Experimental results demonstrate effectiveness proposed method.

The tribological behaviors of cast iron by laser surface texturing were experimentally compared with the behavior untextured unidirectional rotary sliding friction and wear tests under oil-lubricated initial line contact. coefficient temperature rise analyzed increasing load applied block-on-ring tests. In addition, loss mechanism also investigated through topographies analysis. results showed that improvement strongly depended on contact form. For in this work, textured a better frictional...

Three-phase line-start synchronous reluctance motor (LS-SynRM) combines the structural features of three-phase squirrel cage induction (SCIM) and motor, it can start up by asynchronous torque from rotor conductor bars, running due to flux barrier in synchronization. This paper briefly introduces steady-state characteristics LS-SynRM, a new simulation method is presented determine whether bars LS-SynRM designed properly. The reason why traditional has poor d-axis inductance analyzed, proposes...

Variable flux memory machines (VFMM) use magnetization and demagnetization manipulations to adjust machine voltage, achieving wide-speed high-efficiency operation. The state manipulation is a critical concern in the VFMM control. Thus, this article proposes an on-line estimation closed-loop control using signals. requires voltage injection create current. current shows non-linear response at different because changes magnets saturation level. change rate, which calculated by injected...