Dynamic behaviour of active magnetic bearings spindle in high-speed domain

Hentati, Taissir; Bouaziz, Amel; Bouaziz, Samir; Choley, Jean-Yves; Haddar, Mohamed

doi:10.1504/ijmms.2013.058527

Cited by 6 publications

(5 citation statements)

References 17 publications

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“…For example, bearingless permanent magnet motors, bearingless induction motors, bearingless switched reluctance motors. The bearingless reluctance motor has simple structure and low cost, but it has large torque fluctuation and mechanical vibration of rotor [12]- [15]. The bearingless induction motor has good high temperature resistance and can withstand large centrifugal force, but it has large rotor loss and low efficiency [16]- [18].…”

Section: Magnetic Bearings (Mbs) Are a New Type Of High Performancementioning

confidence: 99%

Electromagnetic Performance Analysis on the Bearingless Permanent Magnet Synchronous Motor With Halbach Magnetized Rotor

Zhang

et al. 2019

IEEE Access

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In order to approximately obtain sinusoidal air-gap magnetic field and get larger radial levitation force of the bearingless permanent magnet synchronous motor (BPMSM), a novel BPMSM with Halbach magnetized rotor is proposed. Firstly, the suspension and rotation mechanisms of the BPMSM are introduced. The control mechanism of producing the radial levitation force in single direction and arbitrary direction is analyzed in detail. The mathematical models of the radial suspension force are given. Secondly, the comparative research on the BPMSMs with the Halbach magnetized rotor and parallel magnetized rotor is carried out. The air-gap magnetic field, back electromotive force (EMF), radial suspension force, and torque are calculated and compared. Finally, the prototype motor equipped with the Halbach magnetized rotor is constructed. Some experimental results are tested and the stable suspension operation of the proposed motor is realized.INDEX TERMS Electric machines, permanent magnet machines, AC machines, magnetic levitation, magnetic circuits.

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Section: Magnetic Bearings (Mbs) Are a New Type Of High Performancementioning

confidence: 99%

Electromagnetic Performance Analysis on the Bearingless Permanent Magnet Synchronous Motor With Halbach Magnetized Rotor

Zhang

et al. 2019

IEEE Access

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“…The global equation of motion is formulated by applying Lagrange's formalism to the kinetic and potential energy expressions of the shaft. It is written as follows (Hentati et al, 2013;Bouaziz et al, 2016) MQ…”

Section: Dynamic Behavior Of An Electromagnetic Spindlementioning

confidence: 99%

“…This step is often expensive and requires higher computation times in order to obtain the optimal values of design parameters. In this work, we propose using interval computation (Alefeld and Mayer, 2000;Hansen and Walster, 2003;Trabelsi et al, 2015) to simulate the dynamic behavior of an electromagnetic spindle (Hentati et al, 2013;Bouaziz et al, 2016). It provides rigorous evaluation that allows designing a mechatronic system while minimizing the number of simulations and, consequently, the calculation time.…”

Section: Introductionmentioning

confidence: 99%

Consideration of uncertainties in the preliminary design case of an electromagnetic spindle

Trabelsi¹,

Guizani²,

Tounsi³

et al. 2019

Journal of Theoretical and Applied Mechanics

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Modeling and evaluation of uncertainties constitute indeed one of the key points when making any decision. For this, designers have to compare the measured or calculated value with a range of permissible values in order to obtain a guaranteed design process. Thus, in this work, simulation of the dynamic behavior of an electromagnetic spindle was done based on the interval computation technique. Indeed, the use of this technique makes it possible to obtain a set of values for different design parameters of the spindle and, consequently, to avoid making several simulations which could make the system useless, expensive or ineffective. The proposed model is based on the combination of Matlab with ModelCenter. Matlab was used to model and simulate the system and ModelCenter to perform parametric studies to verify the influences of uncertainty on the dynamic behavior of the electromagnetic spindle and to determine the optimal design parameters.

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“…1. The modeling is based on using a new approach developed by Hentati et al (2013). This method is based on coupling both elastic and rigid spindle deformations.…”

Section: Mechanical Model Of the Spindlementioning

confidence: 99%

“…Six degrees of freedom are considered. Rigid displacements are also taken in account (Hentati et al, 2013). AMB are presented as spring and damper elements.…”

Section: Introductionmentioning

confidence: 99%

Cutting parameters and vibrations analysis of magnetic bearing spindle in milling process

Bouaziz¹,

Barkallah²,

Bouaziz³

et al. 2016

jtam

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In modern production, milling is considered the widespread cutting process in the formatting field. It remains important to study this manufacturing process as it can be subject to some parasitic phenomena that can degrade surface roughness of the machined part, increase tool wear and reduce spindle life span. In fact, the best quality work piece is obtained with a suitable choice of parameters and cutting conditions. In another hand, the study of tool vibrations and the cutting force attitude is related to the study of bearings as they present an essential part in the spindle system. In this work, a modeling of a High Speed Milling (HSM) spindle supported by two pair of Active Magnetic Bearings (AMB) is presented. The spindle is modeled by Timoshenko beam finite elements where six degrees of freedom are taken into account. The rigid displacements are also introduced in the modeling. Gyroscopic and centrifugal terms are included in the general equation. The bearings reaction forces are modeled as linear functions of journal displacement and velocity in the bearing clearance. A cutting force model for peripheral milling is proposed to estimate the tool-tip dynamic responses as well as dynamic cutting forces which are also numerically investigated. The time history of response, orbit, FFT diagram at the tool-tip center and the bearings dynamic coefficients are plotted to analyze dynamic behavior of the spindle.

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Dynamic behaviour of active magnetic bearings spindle in high-speed domain

Cited by 6 publications

References 17 publications

Electromagnetic Performance Analysis on the Bearingless Permanent Magnet Synchronous Motor With Halbach Magnetized Rotor

Electromagnetic Performance Analysis on the Bearingless Permanent Magnet Synchronous Motor With Halbach Magnetized Rotor

Consideration of uncertainties in the preliminary design case of an electromagnetic spindle

Cutting parameters and vibrations analysis of magnetic bearing spindle in milling process

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