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Search Results (3)

Search Parameters:
Keywords = cylindrical induction linear motor

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15 pages, 6878 KiB  
Article
Finite Element Analysis of Electromagnetic Characteristics of a Single-Phase Permanent Magnet Linear Oscillation Actuator
by Hongbin Zhang, Zhaoxin Wang, Minshuo Chen, Zhan Shen, Haitao Yu and Zhike Xu
Sensors 2025, 25(2), 452; https://doi.org/10.3390/s25020452 - 14 Jan 2025
Cited by 1 | Viewed by 1216
Abstract
The electromagnetic characteristics of a single-phase permanent magnet linear oscillation actuator are analyzed by the finite element method. Firstly, the basic structure and operation principle of the linear oscillation actuator are introduced. The internal stator slot and arc tooth are used to reduce [...] Read more.
The electromagnetic characteristics of a single-phase permanent magnet linear oscillation actuator are analyzed by the finite element method. Firstly, the basic structure and operation principle of the linear oscillation actuator are introduced. The internal stator slot and arc tooth are used to reduce the detent force. According to the principle of electromagnetic fields, the electromagnetic field equation is listed and the function of the motor is deduced. At the same time, the eight-node hexahedral element is used to calculate the listed universal functions, and the inductance, flux linkage, induced electromotive force and electromagnetic force of the motor are deduced. The electromagnetic field of the motor is simulated by two-dimensional and three-dimensional finite element methods, and the accuracy of the calculation results of the electromagnetic characteristics of the cylindrical linear oscillation motor by the two methods is compared and analyzed. Finally, an experimental prototype was developed and the no-load characteristics of the motor were tested using the existing linear motor towing method. By comparing the experimental and simulation results, the accuracy of the theoretical analysis and the rationality of the motor design are verified. Full article
(This article belongs to the Special Issue Advanced Sensor-Based Methods for Condition Monitoring, Diagnostics, and Fault-Tolerant Control of Power Converters)
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12 pages, 5035 KiB  
Article
Characteristics Analysis and Comparison of a Cylindrical Linear Induction Motor with Composite Secondary Structure
by Chunyu Du, Lu Zhang, Xu Niu and Kai Yang
Energies 2024, 17(6), 1294; https://doi.org/10.3390/en17061294 - 7 Mar 2024
Cited by 1 | Viewed by 1584
Abstract
The cylinder linear induction motor (CLIM) is a variation of the rotary induction motor. Its structure is simple, it has a low manufacturing cost, and it can generate linear thrust without the need for a conversion mechanism. It is particularly suitable for electromagnetic [...] Read more.
The cylinder linear induction motor (CLIM) is a variation of the rotary induction motor. Its structure is simple, it has a low manufacturing cost, and it can generate linear thrust without the need for a conversion mechanism. It is particularly suitable for electromagnetic catapults, magnetic levitation transport, and industrial production fields, due to its strong environmental adaptability. Designing a high-thrust and high-efficiency CLIM is a great challenge due to its inherent drawbacks, such as the low thrust density and power density of induction motors. In this article, two CLIMs with different topologies are proposed to meet the demand for control-rod drives in high-temperature and high-pressure environments. The article elucidates the topologies of the two CLIMs and proposes an analytical computational approach for the CLIM. Modern optimization algorithms were utilized to optimize the design of the structural parameters of both CLIMs. A 3D-FEA simulation was used to compare and analyze the air-gap magnetism and thrust characteristics of two CLIMs. The results indicate that the copper-ring secondary CLIM has a higher thrust density and is more suitable for use in control-rod drive mechanism (CRDM) systems. Full article
(This article belongs to the Special Issue Linear/Planar Motors and Other Special Motors)
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18 pages, 617 KiB  
Article
Analysis and Modeling of Linear-Switched Reluctance for Medical Application
by Jean-Francois Llibre, Nicolas Martinez, Pascal Leprince and Bertrand Nogarede
Actuators 2013, 2(2), 27-44; https://doi.org/10.3390/act2020027 - 22 Apr 2013
Cited by 15 | Viewed by 11046
Abstract
This paper focuses on the analysis, the modeling and the control of a linear-switched reluctance motor. The application under consideration is medical, and the actuator is to be used as a left ventricular assist device. The actuator has a cylindrical or tubular shape, [...] Read more.
This paper focuses on the analysis, the modeling and the control of a linear-switched reluctance motor. The application under consideration is medical, and the actuator is to be used as a left ventricular assist device. The actuator has a cylindrical or tubular shape, with a mechanical unidirectional valve placed inside the mover, which provides a pulsatile flow of blood. The analytical expression of the effort based on the linear behavior of the actuator is given. The identification of the characteristics of the prototype actuator and the principle of position control is performed. A modeling of the actuator is proposed, taking into account the variation of inductance with respect to the position. The closed-loop position control of the actuator is performed by simulation. A controller with integral action and anticipatory action is implemented in order to compensate the effects of disturbing efforts and tracking deviations. Moreover, a magic switch is performed in the controller to avoid overshoots. The results show that the closed-loop response of the actuator is satisfactory. Full article
(This article belongs to the Special Issue Human Centered Actuators)
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