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The Observation of Wavelet Theory Used to Restrain Thrust Ripple in Linear Servo System
2005 International Conference on Electrical Machines and Systems, 2005We employ the special function of wavelet transform that can extract the characteristics of singular signals, as to the thrust fluctuation in the direct drive linear servo system, to process wavelet analysis and research on the thrust fluctuation in permanent-magnet synchronous linear motor servo system, and it finally proves that we can observe the ...
null Yang Xia +3 more
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Separation of on-load Thrust Ripple of Moving-Magnet Linear Motor Based on Frozen Permeability
2024 IEEE 10th International Power Electronics and Motion Control Conference (IPEMC2024-ECCE Asia)In this paper, a separation method of on-load thrust ripple of moving-magnet linear motor based on frozen permeability method is proposed. The traditional linear motor analysis method divides the thrust ripple into two parts: no-load detent force and ...
Qinwei Sun +3 more
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Design of thrust ripple minimization by equivalent magnetizing current considering slot effect
IEEE Transactions on Magnetics, 2006This paper proposes the maximum thrust design of slotted permanent magnet linear synchronous motor (PMLSM) using equivalent magnetizing current method (EMCM) considering slot effect. The genetic algorithm is used for optimization. The objective functions are selected for the maximum thrust and the minimum detent force.
null Dong-Yeup Lee, null Gyu-Tak Kim
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Speed Control of Linear Induction Motor with Thrust and Stator Flux Ripple Reduction
2018 21st International Conference on Electrical Machines and Systems (ICEMS), 2018This paper introduces a speed control of linear induction motor (LIM) by using three different strategies of control. A proportional Integral (PI) controller is used to control the speed of LIM. The output of the PI controller is regarded as the reference thrust for all three different schemes.
Mahmoud F. Elmorshedy, Wei Xu, Yi Liu
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Optimization on thrust ripple of an axial-flux permanent-magnet linear synchronous machine
2011 International Conference on Electrical Machines and Systems, 2011This paper focuses on decreasing the thrust ripple of an axial-flux permanent-magnet linear synchronous machine (PMLSM) used for free-piston Stirling engines. A typical 1kW machine with 10 poles and 9 slots is investigated. By finite-element method (FEM), detent force and thrust ripple are analyzed for different axial and radial dimensions of the end ...
Wei Shi +5 more
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THRUST RIPPLE OPTIMISATION METHOD FOR LINEAR SWITCHED-FLUX MACHINES
IET Conference Proceedings, 2021I. Eguren +4 more
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Optimization of the Thrust Ripple of a Tubular Flux-Switching Permanent Magnet Linear Motor
Applied Mechanics and Materials, 2014The effective optimization methods are needed to reduce the thrust ripple for the tubular flux-switching permanent magnet linear motor (TFSPMLM), which is significant for reducing the vibration, and improving the reliability. The auxiliary teeth and core bridge are set and analyzed for the bipolar and single-polar winding structures.
Qiang Tan +3 more
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2023 International Conference on Smart Energy Systems and Technologies (SEST), 2023
Reza Jafari +3 more
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Reza Jafari +3 more
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Thrust Ripple Suppression Strategy Based on Quasi Resonant Extended State Observer for PMSLM
IEEE transactions on industry applicationsDue to the influence of cogging force and end force, permanent magnet linear synchronous motors (PMLSM) suffer from serious thrust ripple. The thrust ripple seriously affects the control performance, greatly limits the application of PMSLM.
Luda Qiao +4 more
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Design of a Halbach Magnet Array via Topology Optimization for Reducing Thrust Ripple in PMSLMs
2026 IEEE 9th International Electrical and Energy Conference (CIEEC)This paper addresses the need for thrust ripple suppression in high-precision permanent magnet synchronous linear motors by proposing a Halbach permanent magnet array design method based on topology optimization.
Chunqiu Zhao +3 more
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