Analysis of High Force Voice Coil Motors for Magnetic Levitation

Kim, Jae-Yeol; Ahn, Dahoon

doi:10.3390/act9040133

Cited by 8 publications

(13 citation statements)

References 21 publications

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“…i I xy , i I yz , and i I zx represent the product of inertia about the link i. i x ci , i y ci , and i z ci represent the coordinate components of the mass center in link i along three axes in the local coordinate system. m i represents the mass of link i. J i (i = 1-7) can be calculated by Equation (12).…”

Section: Dynamic Modeling With the Euler-lagrangian Approachmentioning

confidence: 99%

“…By substituting Equations ( 9)- (12) to Equation ( 8), the Lagrangian equation can be transformed into Equation (13).…”

Section: Dynamic Modeling With the Euler-lagrangian Approachmentioning

confidence: 99%

“…In contrast, the voice coil actuator (VCA) has a simpler structure and smaller size than pneumatic or hydraulic actuation [11]. VCA proves to have higher power, more stiffness, and rapid response in displacement resolution [12]. It can provide a long stroke with several millimeters [13,14], which is much larger than the piezoelectric transducer (PZT) [15] and easier to control compared with the PZT [16].…”

Section: Introductionmentioning

confidence: 99%

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Design and Dynamic Modeling of a 3-RPS Compliant Parallel Robot Driven by Voice Coil Actuators

Wang

Zhang

et al. 2021

Micromachines

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In order to increase the driving force of the voice coil actuator while reducing its size and mass, the structural parameters of the coil and magnet in the actuator are optimized by combing Biot–Savart law with Lagrangian interpolation. A 30 mm × 30 mm × 42 mm robot based on a 3-RPS parallel mechanism driven by voice coil actuators is designed. The Lagrangian dynamic equation of the robot is established, and the mapping relationship between the driving force and the end pose is explored. The results of dynamic analysis are simulated and verified by the ADAMS software. The mapping relationship between the input current and the end pose is concluded by taking the driving force as the intermediate variable. The robot can bear a load of 10 g. The maximum axial displacement of the robot can reach 9 mm, and the maximum pitch angle and return angle can reach 40 and 35 degrees, respectively. The robot can accomplish forward movement through vibration, and the maximum average velocity can reach 4.1 mm/s.

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Section: Dynamic Modeling With the Euler-lagrangian Approachmentioning

confidence: 99%

“…By substituting Equations ( 9)- (12) to Equation ( 8), the Lagrangian equation can be transformed into Equation (13).…”

Section: Dynamic Modeling With the Euler-lagrangian Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design and Dynamic Modeling of a 3-RPS Compliant Parallel Robot Driven by Voice Coil Actuators

Wang

Zhang

et al. 2021

Micromachines

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show abstract

“…However, the author did not analyze the effect of the yoke portion on the magnetic field. Typical structure and rectangular structure voice coil motors were analyzed by their volumetric changes [10]. However, there was a lack of research into the dimensional parameters of permanent magnets.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of Magneto-Force-Thermal Parameters for Electromagnetic Actuators with Halbach Array

Liu

et al. 2021

Actuators

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A magnetic levitation isolation system applied for the active control of micro-vibration in space requires actuators with high accuracy, linear thrust and low power consumption. The magneto-force-thermal characteristics of traditional electromagnetic actuators are not optimal, while actuators with a Halbach array can converge magnetic induction lines and enhance the unilateral magnetic field. To improve the control effect, an accurate magnetic field analytical model is required. In this paper, a magnetic field analytical model of a non-equal-size Halbach array was established based on the equivalent magnetic charge method and the field strength superposition principle. Comparisons were conducted between numerical simulations and analytical results of the proposed model. The relationship between the magnetic flux density at the air gap and the size parameters of the Halbach array was analyzed by means of a finite element calculation. The mirror image method was adopted to consider the influence of the ferromagnetic boundary on the magnetic flux density. Finally, a parametric model of the non-equal-size Halbach actuator was established, and the multi-objective optimization design was carried out using a genetic algorithm. The actuator with optimized parameters was manufactured and experiments were conducted to verify the proposed analytical model. The difference between the experimental results and the analytical results is only 5%, which verifies the correctness of the magnetic field analytical model of the non-equal-size Halbach actuator.

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“…Furthermore, magnetic suspension technology is also used in harvesting energy technology, in which the magnetic suspension wind turbine [6,7] uses the magnetic force to cause the blades of wind power generation to be suspended in the air gap, and the electrical energy generated by cutting magnetic induction lines is stored in the battery. Currently, magnetic suspension technology is developing rapidly, and mainly includes electromagnetic technology [8,9], permanent magnet (PM) technology [10,11] and hybrid magnet technology [12,13].…”

Section: Introductionmentioning

confidence: 99%

Design and Experimental Validation of a Fuzzy Cascade Controller for a Zero-Power Permanent Magnetic Suspension System with Variable Flux Path Control

et al. 2021

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Magnetic suspension technology has been a promising method to achieve contactless movement, and its advantages are smooth motion, no wear, no noise and low maintenance. In previous studies, the suspension force was mainly controlled by the current in the coils, which can lead to energy loss. To solve the problem of energy loss, we have proposed a novel zero-power permanent magnetic suspension system with variable flux path control (ZPPMSS-VFPC); moreover, the interference suppression and response of the ZPPMSS-VFPC need to be further investigated. This paper aims to improve the robustness and decrease the response time for the ZPPMSS-VFPC; as a result, a fuzzy cascade controller composed of a fuzzy controller and a cascade controller is designed and applied, in which the investigated fuzzy cascade control methods include the position loop fuzzy cascade control (PLFCC) and angle loop fuzzy cascade control (ALFCC). The structure and the working principle of the proposed ZPPMSS-VFPC are introduced, and the theoretical modeling and the fuzzy cascade controller design of the system are exhibited. An experimental setup is established to validate the simulation results and to investigate the control effect of the designed controller. The experimental results demonstrate that the response times of the fuzzy cascade controller at the displacement disturbance and the force disturbance are 0.5 s and 0.6 s faster than those of the cascade control, respectively. Furthermore, the control effect of the PLFCC is better than that of the ALFCC. Overall, the fuzzy cascade controller not only has the characteristics of strong adaptability but also has the characteristics of easy adjustment parameters, which can be applied to the complex magnetic suspension system.

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Analysis of High Force Voice Coil Motors for Magnetic Levitation

Cited by 8 publications

References 21 publications

Design and Dynamic Modeling of a 3-RPS Compliant Parallel Robot Driven by Voice Coil Actuators

Design and Dynamic Modeling of a 3-RPS Compliant Parallel Robot Driven by Voice Coil Actuators

Optimal Design of Magneto-Force-Thermal Parameters for Electromagnetic Actuators with Halbach Array

Design and Experimental Validation of a Fuzzy Cascade Controller for a Zero-Power Permanent Magnetic Suspension System with Variable Flux Path Control

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