Results 21 to 30 of about 290,494 (291)

Thrust Coordinated Assignment and Ripple Suppression of a Multiple-Modular Permanent Magnet Linear Synchronous Motor Based on Model Predictive Thrust Control

open access: yesEnergies, 2023
This paper presents a model predictive thrust force control (MPTFC) method for a multiple-modular permanent magnet synchronous linear motor (PMSLM). It focuses on the thrust assignment and thrust ripple of the motor drive system with a multiple-branch ...
Kai Zuo   +7 more
doaj   +1 more source

Thrust Ripple Analysis and Precise Modeling of 12/13 Slot-Pole Linear Flux-Switching Permanent Magnet Motors

open access: yesCES Transactions on Electrical Machines and Systems
Linear flux-switching permanent magnet motors (LFSPMs) have been proposed for long stator applications such as rail transit. However, the conventional linear permanent magnet synchronous motor (LPMSM) suffers from thrust ripple, which degrades the motor ...
Qi Wang   +5 more
doaj   +1 more source

Analysis and Suppression of Phase Unbalance Induced Force Ripples in Permanent Magnet Linear Motors

open access: yesIEEE Access, 2022
Low force ripples from permanent magnet linear motors (PMLMs) are typically essential requirements in a wide range of demanding control applications with high motion quality.
Qian Wang   +4 more
doaj   +1 more source

Detent force suppression of permanent magnet linear synchronous motor based on a V‐shaped tooth‐slot structure

open access: yesIET Electric Power Applications, 2023
Given the existence of detent force, the positioning accuracy of permanent magnet linear synchronous motor (PMLSM) with an iron core worsens in its application in the field of the precision drive.
Zhiyong Lan   +5 more
doaj   +1 more source

Quantitative Performance Comparison and Optimization of Novel Complementary Field Excited Linear Flux Switching Machine

open access: yesAdvances in Electrical and Computer Engineering, 2019
In this paper, two well-known topologies of proposed Double Sided Field Excited Linear Flux Switching Machine with Segmented Secondary (FELFSMSS) i.e. Dual Stator and Dual Mover are quantitatively compared with a valid decision of selecting Dual Stator
ULLAH, N.   +7 more
doaj   +1 more source

Performance Modeling and Analysis of a Doubly Yokeless Permanent Magnet Linear Motor With Improved Thrust Force Quality

open access: yesIEEE Access, 2019
Permanent magnet linear motors (PMLM) have gained increased popularities in a wide range of applications. However, they generally suffer from considerably lower force densities.
Qian Wang   +4 more
doaj   +1 more source

Thrust Ripple Reduction in Linear Switched-Flux Machines via Additional Pole Optimisation

open access: yesIEEE transactions on energy conversion, 2022
Linear switched-flux machines are a kind of permanent magnet machine with a passive ferromagnetic secondary. Therefore, they can achieve both a good performance and a low cost in long stroke applications.
I. Eguren   +4 more
semanticscholar   +1 more source

Magnet pole shape design for reduction of thrust ripple of slotless permanent magnet linear synchronous motor with arc-shaped magnets considering end-effect based on analytical method

open access: yesAIP Advances, 2017
The shape of the magnet is essential to the performance of a slotless permanent magnet linear synchronous machine (PMLSM) because it is directly related to desirable machine performance.
Kyung-Hun Shin   +4 more
doaj   +1 more source

A new design approach for reduction of force ripple in permanent magnet flux‐switching linear motor

open access: yesIET Electric Power Applications, 2023
To reduce the force ripple of the permanent magnet flux‐switching linear motor (PMFSLM), a new design approach is suggested by the authors. The detent force is redefined as the composite force of the thrust of the single action of permanent magnet and ...
Zongsheng Zhang, Hao Wang, Hong Chen
doaj   +1 more source

Remote Assessment of Ataxia Severity in SCA3 Across Multiple Centers and Time Points

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Spinocerebellar ataxia type 3 (SCA3) is a genetically defined ataxia. The Scale for Assessment and Rating of Ataxia (SARA) is a clinician‐reported outcome that measures ataxia severity at a single time point. In its standard application, SARA fails to capture short‐term fluctuations, limiting its sensitivity in trials.
Marcus Grobe‐Einsler   +20 more
wiley   +1 more source

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