Effect of Electromagnetic Damping on System Performance of Voice-Coil Actuator Applied to Balancing-Type Scale

Abdullah, Abdullah; Ahn, Jaehun; Hwa-Young, Kim，

doi:10.3390/act9010008

Cited by 6 publications

(6 citation statements)

References 9 publications

(17 reference statements)

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“…In this control system, the time-varying magnetic flux due to eddy currents, friction, and hysteresis cause torque losses, which are also considered in the motion equation. The eddy currents are induced when a nonmagnetic, conductive material is moving in a magnetic field [29]- [31]. The eddy currents circulate in the rotor's conductive material and dissipate causing a repulsive force between the magnet and the conductor.…”

Section: Control System Design a System Modelmentioning

confidence: 99%

“…In this study, high-order disturbance observer (HODO) based control used to improve transient performance of the control system for PMSM regardless of the disturbances and unmodelled dynamics. It should be noted that the motion equation was modified to include torque losses due to eddy currents [29]- [31], hysteresis, and friction [32], [33]. Various sources of the disturbances reduce the produced torque and generate ripples in the system response, so they can be compensated with use of disturbance observer based control methods.…”

Section: Introductionmentioning

confidence: 99%

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High Order Disturbance Observer Based PI-PI Control System With Tracking Anti-Windup Technique for Improvement of Transient Performance of PMSM

2021

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This paper focuses on designing a disturbance observer-based control (DOBC) system for PMSM drives. The cascade structure of the discrete-time PI-PI control system with tracking anti-windup scheme based on back-calculation algorithm has been designed for both loops. In this study, the high-order disturbance observer (HODO) based control has been proposed to improve the speed tracking performance of the control system for PMSMs. Note that the disturbance in the mechanical dynamics includes not only the load torque but also the torque losses resulting from the time-varying flux, hysteresis, and friction. The HODO observer is designed to estimate this total disturbance. Moreover, the proposed disturbance observer does not require the derivatives of the disturbance to be zero, like in the traditional ones. The proposed DOBC demonstrates its ability to improve speed tracking performance regardless of a load torque variation and the high-order disturbances caused by a cogging torque and a high-frequency electromagnetic noise in the PMSM system. The proposed disturbance observer-based control system has been implemented with a Lucas-Nuelle 300 W PMSM prototyping kit. In real-time experiments, the proposed algorithm with HODO achieves fewer speed errors and faster response comparing with the PI controller without HODO or PI controller with HODO of lower orders. The synthesis of the disturbance observer with discrete-time PI controller with the effective tractive anti-windup scheme has practical significance because it is widely used in the industry. The experimental results have proved the feasibility of the proposed control scheme.INDEX TERMS Anti-windup, disturbance observer based control, high-order disturbance observer, discrete-timePI controller, PMSM, back-calculation algorithm.

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Section: Control System Design a System Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High Order Disturbance Observer Based PI-PI Control System With Tracking Anti-Windup Technique for Improvement of Transient Performance of PMSM

2021

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“…The flow of electrons in the conductor immediately creates an opposing magnetic field, generating Lorentz forces, which dampen the magnet motion and produce heat inside the conductor [13], [14]. These circulating eddy currents induce their magnetic field, causing a resistive force [15]. Even though eddy current can be used as a damper, some issues still need to be addressed, such as magnetic contamination and heat generation [14].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Different materials on Electromagnetic Damping CharacteristicsExperimental Study of Different Materials on Electromagnetic Damping Characteristics

Yusoff,

Zaidi,

Ishak

et al. 2023

Int. J. Adv. Sci. Eng. Inf. Technol.

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Electromagnetic damper has been given special attention by many researchers and thus is among the important research areas in vibration system. This paper examines electromagnetic damper effect through simulation and experimental study. A vibration test rig incorporating a simple electromagnetic damper is designed and tested to examine the impact of electromagnetic force.The vibration system test rig can be operated as free vibration as well as a forced vibration system. In the simulation phase, the MATLAB model of the electromagnetic damper system is developed, considering its dynamic behavior. This simulation allows for the evaluation of the damper's effectiveness in reducing vibration amplitudes and settling times. Subsequently, an experimental setup is constructed to validate the simulation results. One of the key findings of this research is the comparison of different materials used as the outer cylinder of the electromagnetic damper system. The results indicate that aluminum exhibits a superior damping coefficient value of 2.8 kgs-1 compared to Nylon, which has a damping coefficient of 1.9 kgs-1. This observation highlights the significant impact of the damper's material choice on the vibration system's amplitude and settling time. The implementation of aluminum as the outer cylinder results in reduced amplitudes and quicker settling times in the vibration system. The combination of simulation and experimental studies enhances the understanding of the electromagnetic force's influence and validates the findings. The comparison of different materials for the damper's outer cylinder underscores the importance of material selection in achieving optimal damping coefficients and improved vibration system performance.

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“…An electromagnetic damper is another method to create damping in any vibration system. There are now several dampening devices that operate based on the electromagnetism concept [2] [3][4] [5][6] [7] [8]. Song C. L. et al [9], conducted an electromagnetic application study, utilising a permanent magnet as a plunger to achieve rectilinear and turning motions in a multi-segmented robot.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 4. Application of electromagnetic damping force to balance a cantilever beam [8] Recently the discovery of one of the simplest electromagnetic damping systems was made by [13], which consists of a magnet and a conductor tube to generate an electromagnetic field. The magnetic force between the magnet and conductor can be used to absorb shocks created due to various factors, such as uneven road conditions.…”

Section: Introductionmentioning

confidence: 99%

Development of Empirical Model for Electromagnetic Damping Coefficient Damper

Mohd Fazli Mohd Yusoff,

Ahmad Zaidi,

Firdaus Ishak

et al. 2023

Int. J. Automot. Mech. Eng.

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The significance of the electromagnetic damper in vibration systems has attracted considerable interest from researchers, making it a prominent area of research. Various papers have been consulted to explore the vibration concept associated with electromagnetic dampers and their practical applications. A vibration test rig with a simple electromagnetic damper has been designed and tested to investigate the effect of electromagnetic force. An experimental study on the response of the electromagnetic damper was conducted. A logarithmic decrement method was deployed to find the damping coefficient, c, of a one-degree freedom system (mass spring damper system). A test rig and electromagnetic damper element were introduced as a damper in the system. Design factors included the type of geometry, type of material and the current supply to the system. The testing was conducted using the in-house developed vibration test rig. The data obtained from the experiment has been analysed to determine the electromagnetic damping performance. A factorial analysis was performed to identify the significant factors influencing the damping coefficient of the system. Two empirical models obtained through regression analysis of Excel and Minitab. It was found that the influential effects for the response are the type of material (aluminum), slotted geometry and a bigger amount of current (3 A). The application of a cylindrical conductor and magnet as a damper reduced the vibration response of spring mass damper.

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Effect of Electromagnetic Damping on System Performance of Voice-Coil Actuator Applied to Balancing-Type Scale

Cited by 6 publications

References 9 publications

High Order Disturbance Observer Based PI-PI Control System With Tracking Anti-Windup Technique for Improvement of Transient Performance of PMSM

High Order Disturbance Observer Based PI-PI Control System With Tracking Anti-Windup Technique for Improvement of Transient Performance of PMSM

Experimental Study of Different materials on Electromagnetic Damping CharacteristicsExperimental Study of Different Materials on Electromagnetic Damping Characteristics

Development of Empirical Model for Electromagnetic Damping Coefficient Damper

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