Magnetic Levitation Control Based on Flux Density and Current Measurement

Molina, Luis M. Castellanos; Galluzzi, Renato; Bonfitto, Angelo; Tonoli, Andrea; Amati, Nicola

doi:10.3390/app8122545

Cited by 11 publications

(5 citation statements)

References 24 publications

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“…The proposed control law aims to enable the system output d to track the ideal output x re f under a semi-active approach. This means that the control is only activated in one direction, opposite to gravitational force, introducing a challenge control design, in contrast with, for instance, [14,18,23,[30][31][32], where the active approach is employed. Moreover, the maximum voltage is stated at 5 V; however, in the literature, its maximum is usually 12 V [19].…”

Section: Control Algorithmmentioning

confidence: 99%

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Semi-Active Magnetic Levitation System for Education

et al. 2021

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This paper describes how to construct a low-cost magnetic levitation system (MagLev). The MagLev has been intensively used in engineering education, allowing instructors and students to learn through hands-on experiences of essential concepts, such as electronics, electromagnetism, and control systems. Built from scratch, the MagLev depends only on simple, low-cost components readily available on the market. In addition to showing how to construct the MagLev, this paper presents a semi-active control strategy that seems novel when applied to the MagLev. Experiments performed in the laboratory provide comparisons of the proposed control scheme with the classical PID control. The corresponding real-time experiments illustrate both the effectiveness of the approach and the potential of the MagLev for education.

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Section: Control Algorithmmentioning

confidence: 99%

“…Many attempts have been made to control the MagLev system. For instance, some studies have verified the effectiveness of the classical PID control in levitating an object [14][15][16]. A subsequent study has shown that the sliding-mode control outperforms the classical PID control [17].…”

Section: Introductionmentioning

confidence: 99%

Semi-Active Magnetic Levitation System for Education

et al. 2021

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“…In this equation, i 0 is the current of electromagnet coil at equilibrium position, while z 0 is the suspension gap at equilibrium position. The linearization is accomplished near the equilibrium point, and the linearization model is obtained [5].…”

Section: Kinetic Equation Mmentioning

confidence: 99%

A New Strategy for Improving the Tracking Performance of Magnetic Levitation System in Maglev Train

Zhai

2019

Symmetry

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The maglev train is a whole new method of transportation without wheels, consisting of 20 groups of symmetry suspension units. The magnetic levitation system plays a major role in suspending the maglev train stably and following the track quickly with the desired gap. However, vertical track irregularity in the maglev train line has a dreadful effect on the tracking performance of the magnetic levitation system. The investigations carried out by our team have revealed that the fluctuation of the suspension gap becomes more and more serious with increases in running speed. In this paper, a mathematical model with consideration of vertical track irregularity is established. In order to overcome and suppress the fluctuation of the suspension gap, we propose a new strategy which includes installing an accelerometer on the electromagnet to address this problem. This strategy has already been successfully implemented and applied to the suspension controller for a magnetic levitation system in the Changsha maglev express. Real operation data indicates the tracking performance of the magnetic levitation system was obviously improved.

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“…Magnetic levitation technology has garnered significant interest in various applications, including chip manufacturing [1][2][3][4], microscopic imaging [5][6][7][8], and force control [9][10][11][12]. Its advantages of being friction-less [13], non-polluting [14], and having high precision capabilities [15] make it highly desirable.…”

Section: Introductionmentioning

confidence: 99%

Force and Torque Model of Magnetically Levitated System with 2D Halbach Array and Printed Circuit Board Coils

Zou,

Song,

Zhou

et al. 2023

Sensors

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Precision machining fields often require worktables with different stroke sizes. To address the need for scalability and facilitate manufacturing, this study proposes a novel infinite expansion magnetically levitated planar motor (MLPM) based on PCB stator coils. Different from existing magnetic levitation systems that use PCB coils, the design presented in this paper utilizes smaller coil units, with each coil being independent of one another. The coils are structured in a spiral pattern on a 16-layer PCB, comprising 15 layers of coils, while the last layer is dedicated to wiring and other circuits. Magnetic field modeling is conducted for both the stator coil and the 2D Halbach array structure employed in the system. A simple table lookup method is employed to accurately account for the prevalent end effects observed during system motion. Additionally, the decoupling effect of magnetic force and torque is evaluated by solving for the current vector at different points along a specific trajectory. To verify the accuracy of the proposed system’s modeling, a prototype is developed and tested. Experimental results demonstrate that compared to traditional harmonic model methods, the proposed approach improves the calculation accuracy of magnetic force by 50.31% and torque by 70.65%. This study presents a new MLPM system with vast potential applications in precision manufacturing and robotics. The innovative design and improved performance characteristics make it a promising technology for enhancing the capabilities of worktables in precision machining fields.

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Magnetic Levitation Control Based on Flux Density and Current Measurement

Cited by 11 publications

References 24 publications

Semi-Active Magnetic Levitation System for Education

Semi-Active Magnetic Levitation System for Education

A New Strategy for Improving the Tracking Performance of Magnetic Levitation System in Maglev Train

Force and Torque Model of Magnetically Levitated System with 2D Halbach Array and Printed Circuit Board Coils

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