Design and Analysis of a Novel Linear Oscillating Actuator with Dual Stator Rectangular Geometry

Jawad, Muhammad; Yu, Haitao; Ahmad, Zahoor; Liu, Yulei

doi:10.13052/2021.aces.j.361015

Cited by 7 publications

(9 citation statements)

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“…The resonance frequency of the LOAs are determined with the help of equation ( 2). Using equation ( 2), the resonance frequency of the LOA is determined through mover parameters; mover mass and spring stiffness (Jawad et al, 2021). As OMLOA has highest mover mass, it has lowest values of operating resonance frequency, shown by the blue line.…”

Section: Performance Results and Comparisonmentioning

confidence: 99%

Performance and design comparison of moving-magnet linear oscillating actuators based on their mover positions

Ahmad

Ullah

et al. 2022

WJE

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Purpose This study aims to investigate and compare the characteristics of three topologies of moving-magnet linear oscillating actuator (LOA) based on their mover position. Positive aspects and consequences of every topology are demonstrated. Three topologies of axially magnetized moving-magnet LOA; outer mover, inner mover (IM) and dual stator (DS) are designed and examined. Due to its characteristically high thrust density and more mechanical strength, axially magnetized tubular permanent magnets (PMs) are used in these topologies. Design/methodology/approach LOAs are designed and optimized using parametric sweep, in term of design parameters and output parameters like thrust force, stroke and operating resonance frequency of the LOA. All the pros and cons of each topology are investigated and compared. Output parameters of the LOAs are compared using same size of the investigated LOAs. Mover mass, which plays a vital role in resonant operation, is analyzed for IM and DS designs. Investigated LOAs are compared with conventional designs of LOA for compressor in refrigeration system with regards of motor constant, stroke and thrust per PM mass. Findings This paper analyzes three topologies of moving-magnet LOAs. The basic difference between investigated LOAs is the radius of tubular-shaped mover from its central axis. All the design parameters are compared and concluded that thrust per PM mass of IMLOA is maximum. OMLOA provides maximum motor constant of value 180 N/A. DSLOA provides thrust force with motor constant 120 N/A and required intermediate materials of PMs. All the three designs give the best results in terms of motor constant and thrust per PM mass, compared to conventional designs of LOA. Originality/value This paper determines the impact of mover position from its central axis in a tubular-shaped moving-magnet LOA. This work is carried out in correspondence of latest papers of LOA.

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Section: Performance Results and Comparisonmentioning

confidence: 99%

Performance and design comparison of moving-magnet linear oscillating actuators based on their mover positions

Ahmad

Ullah

et al. 2022

WJE

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show abstract

“…Design investigated in Ref. [8] is the rectangular structured LOA with axial magnetised PMs, housed on their mover. This topology is simple to fabricate and low cost, due to rectangular PMs used.…”

Section: F I G U R E 1 9 Stroke To Current Ratio Versus Frequency Of ...mentioning

confidence: 99%

“…The main problem of design examined in Ref. [8] is high leakage flux due open geometry. The design used in Ref.…”

Section: Comparison Of the Proposed Loa With Existing Topologiesmentioning

confidence: 99%

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Design and experimental analysis of high electromagnetic force density moving magnet linear actuator with end ferromagnetic poles

Akbar

Khan

Ahmad

et al. 2022

IET Electric Power Appl

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A Linear Oscillating Actuator (LOA) generates bi-directional electromagnetic (EM) force between two extreme points. A new topology of moving magnet LOA with axial magnetised PMs and a C-shaped stator core is proposed. On each side of the mover, two chamfered tubular-shaped core material parts are attached. All the design parameters, such as mover mass and EM force of the LOA, are optimised using parametric analysis via parametric sweep, and the optimum values of the parameters are chosen based on design and performance parameters. The LOA's performance is examined for various input loading values and at different oscillation region positions. For various values of time-dependent supply, the EM force's oscillating nature is analysed. The effect of resonance analysis on input current, stroke to current ratio, and efficiency are discussed. The proposed LOA is compared to current LOA topologies in terms of design structure and performance parameters. The FEM results are validated using a special experimental setup. The proposed LOA produces feasible results for the compressor in a refrigeration system.

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“…Consequence of the tubular structured LOA is challenged during manufacturing. Moreover, cost of tubular PMs is more than rectangular PMs (Jawad et al , 2021). LOA are used for different purposes, like compressor in refrigeration system (Bijanzad et al , 2020), electric hammer, linear pumps, bio-medical equipment and robots (Kim et al , 2020).…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of modular moving magnet linear oscillating actuator for compressor in refrigeration system

Khan

Khan²,

Jawad³

et al. 2022

WJE

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Purpose This paper aims to investigates a novel design of a modular moving magnet linear oscillating actuator (MMM-LOA) with the capability of coupling modules, based on their application and space requirements. Design/methodology/approach Proposed design comprised of modules, and modules are separated by using nonmagnetic materials. Movable part of the proposed design of LOA is composed of permanent magnets (PMs) having axial magnetization direction and tubular structure. Stator of the proposed design is composed of one coil individually in a module. Dimensions of the design parameters are optimized through parametric analysis using COMSOL Multi Physics software. This design is analyzed up to three modules and their response in term of electromagnetic (EM) force and stroke are presented. Influence of adding modules is analyzed for both directions of direct current (DC) and alternating input loadings. Findings Proposed LOA shows linear increase in magnitude of EM force by adding modules. Motor constant of the investigated LOA is 264 N/A and EM force per PM mass is 452.389 N/kg, that shows significant improvement. Moreover, proposed LOA operates in feasible region of stroke for compressor application. Furthermore, this design uses axially magnetized PMs which are low cost and available in compact tubular structure. Originality/value Proposed LOA shows the influence of adding modules and its effect in term of EM force is analyzed for DC and alternating current (AC). Moreover, overall performance and structural topology is compared with state-of-the-art designs of LOA. Improvement with regard of motor constant and EM force per PM mass shows originality and scope of this paper.

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Design and Analysis of a Novel Linear Oscillating Actuator with Dual Stator Rectangular Geometry

Cited by 7 publications

References 0 publications

Performance and design comparison of moving-magnet linear oscillating actuators based on their mover positions

Performance and design comparison of moving-magnet linear oscillating actuators based on their mover positions

Design and experimental analysis of high electromagnetic force density moving magnet linear actuator with end ferromagnetic poles

Design and analysis of modular moving magnet linear oscillating actuator for compressor in refrigeration system

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