Results 231 to 240 of about 5,166 (262)

Current waveform optimization for force ripple compensation of linear synchronous motors

42nd IEEE International Conference on Decision and Control (IEEE Cat. No.03CH37475), 2004
Linear synchronous motors are finding expanded use in high-performance applications where high speed and high accuracy is essential. The main problem in improving the tracking performance of linear synchronous motors is the presence of force ripple caused by mismatched current waveforms and unbalanced motor phases or amplifier gains.
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Adaptive Robust Control of Linear Motor with Ripple Force Compensation

2011 Third Pacific-Asia Conference on Circuits, Communications and System (PACCS), 2011
The adaptive robust control (ARC) provides a good output tracking performance. However, the common mathematical model of a linear motor usually neglects some interference terms such as the ripple force. And the common simplified mathematical model of a linear motor may weaken the tracking accuracy performance.
Wei-jia Shi, De-cheng Zhang
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Ripple force compensation based on ILC–ASMC for linear servo system

Transactions of the Institute of Measurement and Control
The ripple force, which displays intricate dynamic characteristics and is fundamentally nonlinear in linear servo systems, poses challenges in modeling and compensation. To achieve superior suppression of the ripple force, this paper proposes a new scheme called the iterative learning control (ILC)–adaptive sliding-mode control (ASMC), which combines ...
Zhuxin Chu, Shaowu Lu, He Chang, Bao Song   +3 more
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Force and magnetic field calculations for rippled energy storage solenoids

IEEE Transactions on Magnetics, 1981
The magnetic field and force on the surface of a rippled thin wall solenoid are calculated and compared to the case of an unrippled solenoid. Analytical and numerical calculation methods are included.
Y. Eyssa, M. Hilal
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Analytical Modeling and Experimental Validation of Force Ripple and Friction Force for General Direct Drive Systems

Volume 2: Systems; Micro and Nano Technologies; Sustainable Manufacturing, 2013
In this paper, we present a systematic modeling method of direct drive systems. Experiments are designed to decouple and model friction and force ripple separately, which are two major sources of tracking error. Three different optimization methods, least square method, nonlinear least square method and particle swarm optimization are used for ...
Zhao, Ran, Xu, Chengying
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Vibrational Forces in Salient Pole Synchronous Machines Considering Tooth Ripple Effects

IEEE Transactions on Industrial Electronics, 2012
In rotating electrical machines, the air-gap magnetic field causes radial forces on the stator core physically based on the Maxwell stress. These radial force waves do not contribute to the torque generation of the machine but may lead to dangerous vibrations.
Georg Traxler-Samek, Thomas Lugand, Mauro Uemori   +2 more
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Back EMF improvement and force ripple reduction in PM linear motor drives

2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004
Permanent magnet linear synchronous motor (PMLSM) drives may exhibit cogging force and high harmonic content in the EMF waveform. Both of them cause a force ripple, under low and high load, introducing trouble in the positioning precision. To reduce the force ripple, there are two techniques: an appropriate PMLSM design, and a suitable control of the ...
BIANCHI, NICOLA, BOLOGNANI, SILVERIO, DALLA FRANCESCA CAPPELLO, ALESSANDRO   +2 more
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Force Ripple Reduction in Permanent Magnet Linear Synchronous Motor with Position-Dependent Force Constant Identification

2022 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), 2022
Yoon Sik Kwon, Sangmin Lee 0009, Jun Young Yoon   +2 more
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Minimization of force ripples in coreless linear actuators

2014 International Conference on Electrical Machines (ICEM), 2014
Bruyn, de, B.J.H., Jansen, J.W., Lomonova, E.A.   +2 more
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Brushless DC motor force ripple reduction techniques - A survey

AIP Conference Proceedings, 2022
B. T. Geetha, V. Perumal
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