Results 211 to 220 of about 5,166 (262)
Some of the next articles are maybe not open access.
2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020
This paper proposes a torque ripple, DC current ripple, and radial force ripple reduction method with five-phase switched reluctance motor (SRM). The proposed method makes these three ripples simultaneously zero, which is so-called "triple zero" in this paper, by improving control flexibility with five-phase.
Takahiro Kumagai +2 more
openaire +1 more source
This paper proposes a torque ripple, DC current ripple, and radial force ripple reduction method with five-phase switched reluctance motor (SRM). The proposed method makes these three ripples simultaneously zero, which is so-called "triple zero" in this paper, by improving control flexibility with five-phase.
Takahiro Kumagai +2 more
openaire +1 more source
Reduction of force ripples in PM planar actuator
The XIX International Conference on Electrical Machines - ICEM 2010, 2010Specific electromagnetic actuators are now widely used. In order to meet design constraints in terms of performance and cost, the studies of such converters must be carried out using dedicated models. This paper deals with the study of a permanent magnet actuator with Multiple Degrees of Freedom (MdoF).
G. Krebs +4 more
openaire +1 more source
Analysis of the force ripples of a current loaded PMLSM
COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2009PurposeThe purpose of this paper is to present an analysis of the force ripples of an open slot permanent magnet linear synchronous motor (PMLSM). A calculation procedure using 2D finite elements method (2D‐FEM) is then evaluated with experimentations.Design/methodology/approachFirst, the studied PMLSM and its main features are introduced. Then, the 2D‐
Remy, Ghislain +3 more
openaire +2 more sources
Compensation of friction and force ripples in the estimation of cutting forces by neural networks
Measurement, 2018Abstract Estimated cutting forces are usually mixed up with disturbing forces such as friction and need to be compensated. In common compensation methods, such forces are firstly recorded along machining contours under air-cutting conditions. Then, recorded disturbing forces are recalled for the compensation during the main machining process.
Heydarzadeh, Mohammad S. +3 more
openaire +2 more sources
2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021
The switched reluctance motors (SRMs) are attractive because they are free from the permanent magnet. However, the application of the SRMs is hindered by a trade-off relation among the large torque ripple, radial force ripple, DC current ripple, and copper loss. A recent study revealed that the above issues can be solved by optimizing the phase-current
Takayuki Kusumi, Eiji Hiraki
openaire +1 more source
The switched reluctance motors (SRMs) are attractive because they are free from the permanent magnet. However, the application of the SRMs is hindered by a trade-off relation among the large torque ripple, radial force ripple, DC current ripple, and copper loss. A recent study revealed that the above issues can be solved by optimizing the phase-current
Takayuki Kusumi, Eiji Hiraki
openaire +1 more source
Source Independence of Force Ripple in Linear Induction Machines
IEEE Transactions on Industry Applications, 2020In this article, it is shown that in a linear induction machine (LIM), the force ripple that arises due to the magnetic asymmetry does not depend on whether the LIM is being fed from a voltage source or a current source. When the LIM is fed from a three-phase balanced voltage source, the primary voltage is balanced but the LIM draws an unbalanced ...
Angshudeep Majumdar +1 more
openaire +1 more source
Identification and Compensation of Force Ripple in PMSLM using a JITL Technique
Asian Journal of Control, 2014AbstractThis paper presents an adaptive compensation scheme for reducing the force ripple effects in permanent magnet synchronous linear motor (PMSLM). Firstly, when the velocity of a linear motor is close to zero, based on a fast Fourier transform (FFT) analysis, the dominant displacement periodicity of the force ripple can be obtained for simplifying
Lu, Shaowu +4 more
openaire +2 more sources
Identification and compensation of force ripple in linear permanent magnet motors
Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001The main problem in improving the tracking performance of linear permanent magnet motors is the presence of force ripple caused by the irregular magnetic field of the permanent magnets and inaccuracy in electronic commutation by the servo amplifier. The paper presents a method to identify and compensate the effect of the force ripple in servo control ...
Christof Röhrig, Andreas Jochheim
openaire +1 more source
Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems, 2018
Force feedback and shape change are modalities with a growing application potential beyond the more traditional GUIs. We present two studies that explored the effect of these modalities on the emotional experience when interacting with an intelligent thermostat.
Van Oosterhout, Anke +2 more
openaire +1 more source
Force feedback and shape change are modalities with a growing application potential beyond the more traditional GUIs. We present two studies that explored the effect of these modalities on the emotional experience when interacting with an intelligent thermostat.
Van Oosterhout, Anke +2 more
openaire +1 more source
Adaptive feedforward compensation of force ripples in linear motors
Control Engineering Practice, 2005In this paper, an adaptive control scheme is proposed to reduce force ripple effects impeding motion accuracy in Permanent Magnet Linear Motors (PMLMs). The displacement periodicity of the force ripple is first obtained by using a Fast Fourier Transform (FFT) analysis.
Zhao, S., Tan, K.K.
openaire +1 more source