Design and Manufacture of a Linear Actuator Based on Magnetic Screw Transmission

Ling, Zhijian; Zhao, Wenxiang; Rasmussen, Peter Omand; Jiang, Yang; Liu, Zhengmeng

doi:10.1109/tie.2020.2967731

Cited by 15 publications

(3 citation statements)

References 27 publications

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“…Also, at the resonance condition, the LOA operation prevents the actuator from high reactive current [17]. Equation (3) shows that the mass of the mover and the operating frequency are inversely proportional. Mover mass cannot reduce many more; however it can be optimising to some extent.…”

Section: Mechanical Resonancementioning

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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Section: Mechanical Resonancementioning

confidence: 99%

“…The efficiency of the system is relatively low due to the low efficiency of the induction motor and mechanical friction. To avoid this complex structure of the crankshaft mechanism, linear actuators are used [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

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

View full text Add to dashboard Cite

show abstract

“…Additionally, a new MLS structure [10] that can well approximate helical magnetic poles with discrete PMs was proposed. A compact direct-drive linear actuator integrating a rotary machine and a magnetic screw was also designed [11], where the magnetic circuits were decoupled. In addition, some studies have focused on the theoretical analysis of MLSs.…”

Section: Introductionmentioning

confidence: 99%

Novel Force Estimation Method for Magnetic Lead Screw-Based RotLin Actuator

Fujimoto

2022

IEEE Trans. on Ind. Applicat.

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This article proposes a method to precisely estimate the load force of magnetic lead screw (MLS)-based series elastic actuators (SEAs) in real time. The elastic transmissions of MLS-based SEAs generally comprise permanent magnets (PMs). Owing to the magnetic pole distortion and the characteristic nonlinear force of PMs, conventional force estimation methods are less accurate for MLS-based actuators than for SEAs with mechanical springs. In the proposed method, to precisely estimate force of MLSs, the nonlinear force characteristic of an MLS is modeled with a sinusoidal force model, and the magnetic force hysteresis phenomenon is predicted based on Bouc-Wen-type hysteresis equations. Moreover, a method called the relative displacement normalization method is proposed to detect the magnetic pole distortion and to compensate for the related force estimation error. In addition, the proposed method is applied to a rotary-linear (RotLin) actuator, which is a novel MLS-based linear SEA. The force estimation accuracy is experimentally evaluated by comparison with existing methods. The results demonstrate that the root-mean-square error of the proposed method is less than that of the existing polynomial model by up to 81.2%. Finally, a force controller and a static force control system is designed with the proposed model to prove its feasibility.

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A review of wear resistance materials used in power-screw mechanism for aerospace applications

Ujjwal

Chandra

2021

IOP Conf. Ser.: Mater. Sci. Eng.

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In today’s industrial requirement, good wear resistant materials with the same or better mechanical properties are the need of the hour. In the present paper, an actuator that is used to lift the load is under study. It uses a linear actuation mechanism involving a screw-like motion to lift the loads. It employs a stainless steel of high quality. Since there are various types of wearing involved in the system, choice of the materials becomes the prime factor for determining the maintenance cost and the cycle life of the actuator. There are many research advances made in this field which provides us with the best type of material for its particular type of job. The present paper discusses the materials that could be substituted in place of the existing material choice i.e., in place of AMS5659 and aluminium-bronze. The two materials stated above are known for its superior wear handling and excellent mechanical properties.

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Design and Manufacture of a Linear Actuator Based on Magnetic Screw Transmission

Cited by 15 publications

References 27 publications

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

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

Novel Force Estimation Method for Magnetic Lead Screw-Based RotLin Actuator

A review of wear resistance materials used in power-screw mechanism for aerospace applications

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