Control of flexible rotor systems with active magnetic bearings

Lei, Shuliang; Palazzolo, Alan

doi:10.1016/j.jsv.2007.12.028

Cited by 78 publications

(39 citation statements)

References 5 publications

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“…Lei and Palazzolo (2008) presented an approach for the analysis and design of magnetic suspension systems with a large flexible rotor dynamic model including dynamics, control and simulation. Inayat-Hussain (2007) presented a numerical study to investigate the response of an unbalanced rigid rotor supported by AMBs.…”

Section: Introductionmentioning

confidence: 99%

Stability analysis and dynamic behaviour of a flexible asymmetric rotor supported by active magnetic bearings

Hili¹,

Bouaziz

Haddar³

2017

jtam

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The objective of this work is to show the influence of dynamic characteristics of Active Magnetic Bearings (AMBs) on the stability and dynamic response of an asymmetric and unbalanced rotor. Indeed, AMBs have been successfully applied in several industrial machinery facilities. Their main advantages are the contactless working principle, frictionless suspension and operation in very high speeds. Firstly, the AMBs dynamic support parameters have been obtained through electromagnetic theory. Then, a generalized system equations of motion have been derived using the finite element method. The motion of a rotor the shaft cross-section of which is asymmetric is generally governed by ordinary differential equations with periodic coefficients. Floquet's theory is used to investigate the stability of this system of equations. Finally, numerical simulation results are presented and discussed.

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Section: Introductionmentioning

confidence: 99%

Stability analysis and dynamic behaviour of a flexible asymmetric rotor supported by active magnetic bearings

Hili¹,

Bouaziz

Haddar³

2017

jtam

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“…Los sistemas de levitación magnética en los últimos años se han considerado como un banco de pruebas para diversas estrategias de control (Lei, 2008), (Golob, 2003), (Qin, 2014), (Bächle, 2013) y (Beltran, 2015. Además, se han popularizado por las diversas aplicaciones que tienen, tales como: cojinetes magnéticos (Chen, 2010) y (Du, 2010); sistemas para trenes de levitación magnética (Hasirci, 2011); aislamiento de vibraciones (Tsuda, 2009); microrobots magnéticos (Kummer, 2010); máquinas eléctricas (Arrendondo, 2008); sistema de transportación magnética (Wai, 2011); sistemas de posicionamiento nanométrico (Kim, 2007), entre muchas otras (Peijnenburg, 2006), (Kimman, 2010), (Lee, 2006).…”

Section: Introductionunclassified

Modelado y control de un sistema de levitación magnética basado en un cojinete magnético activo

Cruz-Pegueros

Frías

Lozada‐Castillo

et al. 2017

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En este trabajo se presenta el diseño, modelado e implementación de un sistema de levitación magnética de un grado de libertad, que consiste en una viga actuada por un cojinete magnético activo en configuración pendular. Se obtiene su representación en espacio de estado y, tras una linealización tangente, su función de transferencia correspondiente. Se describen las características del dispositivo experimental, su instrumentación electrónica y mecanismo, particularmente el procedimiento de diseño del actuador electromagnético empleado, así como su caracterización para determinar la constante de proporcionalidad de la fuerza electromagnética. Finalmente, se muestra la simulación numérica e implementación experimental de esquemas clásicos de control para estabilizar en el punto de equilibrio del sistema.

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“…They are well suited for contactless operations such as actuators and sensors in rotating machinery [15][16][17][18]. AMB technology in conjunction with conventional bearings is utilized either as an active magnetic damper [19], or for controlling the instability of certain supports such as journal bearings [20,21].…”

Section: Introductionmentioning

confidence: 99%

Active Control and Energy Cost Assessment of a Rotating Machine

Mahfoud

Skladanek

Hagopian

2011

Shock and Vibration

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Abstract.The performances for controlling a rotating machine by using either an Electromagnetic Actuator or a Piezoelectric Actuator are compared in this work. The aim is to establish selection criteria based on environmental impact. Life Cycle Analysis shows that the operating stage has a considerable impact. In this study, only the operating stage is considered. The energy consumed by the actuators seems to be the appropriate indicator for the same "mechanical" performances. Numerical studies are carried out in order to quantify the energy consumed in each case. Modal control strategy with a fuzzy controller is used. The controller inputs are displacements and velocities. The system studied is modeled by using finite element method and the electrical circuit of each actuator is modeled by using basic electricity and electromagnetism theories. Several configurations are assessed and defined by using the chosen Functional Unit.The results obtained show that both controllers are efficient and enable recommendations for optimal control procedures design for the energy consumed.Keywords: Control, rotordynamics, life cycle analysis, energy consumption Nomenclature a = EMA geometric parameter (Fig. 2), mm b = EMA geometric parameter (Fig. 2), mm c = EMA geometric parameter (Fig. 2), mm C 0 = PEA capacity, F d = EMA geometric parameter (Fig. 2), mm e = effective air gap, mm EMA = electromagnetic actuator f = EMA geometric parameter (Fig. 2), mm

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Control of flexible rotor systems with active magnetic bearings

Cited by 78 publications

References 5 publications

Stability analysis and dynamic behaviour of a flexible asymmetric rotor supported by active magnetic bearings

Stability analysis and dynamic behaviour of a flexible asymmetric rotor supported by active magnetic bearings

Modelado y control de un sistema de levitación magnética basado en un cojinete magnético activo

Active Control and Energy Cost Assessment of a Rotating Machine

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