Theoretical and Experimental Investigations of Dynamics of the Flexible Rotor with an Additional Active Magnetic Bearing

Kozanecka, Dorota

doi:10.5772/51113

Cited by 4 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A noticeable interference signal appearing in the measurements is caused by switching power amplifiers and insufficient electromagnetic shielding of the analog signals. Similar noisy signals can be found in various papers [19,20]. Albeit, in the real object clearly one can see disruption of the rotor position in the axis orthogonal to the axis with the step change of the rotor position (Fig.…”

Section: Implementation Of the Field-circuit Model And Closed Loop Co...supporting

confidence: 82%

“…The controller is critical to a magnetic bearing system because it allows levitation of the rotor and decides about its overall performance. The majority of control schemes have been investigated, like PD, PID, H ∞ , H 2 , LQR [18,19,[21][22][23]. Among them, the most widely used is the PID controller, because of its simplicity.…”

Section: Implementation Of the Field-circuit Model And Closed Loop Co...mentioning

confidence: 99%

See 1 more Smart Citation

Archive of Mechanical Engineering

Wajnert

2019

View full text Add to dashboard Cite

A field-circuit model of the hybrid magnetic bearingThe paper presents a simulation model of the hybrid magnetic bearing dedicated to simulations of transient state. The proposed field-circuit model is composed of two components. The first part constitutes a set of ordinary differential equations that describes electrical circuits and mechanics. The second part of the simulation model consists of parameters such as magnetic forces, dynamic inductances and velocity-induced voltages obtained from the 3D finite element analysis. The MAT-LAB/Simulnik software was used to implement the simulation model with the required control system. The proposed field-circuit model was validated by comparison of time responses with the prototype of the hybrid magnetic bearing.

show abstract

Section: Implementation Of the Field-circuit Model And Closed Loop Co...supporting

confidence: 82%

Section: Implementation Of the Field-circuit Model And Closed Loop Co...mentioning

confidence: 99%

Archive of Mechanical Engineering

Wajnert

2019

View full text Add to dashboard Cite

show abstract

“…Rapid technical progress yields development of novel mechatronic systems such as active magnetic bearings and magnetic suspensions. Kozanecka 1 has added the auxiliary magnetic bearing to the rotating system to eliminate a dangerous increase in the vibration amplitude when a critical frequency had been exceeded. It should be emphasized that the proposed magnetic bearing does not introduce any additional thrust load.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental study of dynamics of two pendulums under a magnetic field

Polczyński

Wijata

Awrejcewicz

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part I:

View full text Add to dashboard Cite

In this article, a two-degree-of-freedom system consisting of two pendulums with magnets embedded in a variable magnetic field is investigated experimentally and numerically. Pivots of the pendulums are coupled by an elastic element. The magnetic interaction originates from permanent magnets, mounted at free ends of the pendulums and current-powered air coils underneath. A novel model for the magnetic force is proposed and verified experimentally. Nonlinear dynamics of the system is examined by means of time series, bifurcation diagrams, phase portraits, and Poincaré sections. Regions of chaotic and regular motion are predicted numerically and justified experimentally. Multiperiodic motion and coexisting solutions are detected, and pictures in basins of their attraction are reported, among other.

show abstract

“…The present paper aims at showing an application of the magnetic bearing as a vibration damper in the torque transmission system to a rear rotor of the conventional helicopter [5,7]. Magnetic bearings offer a novel way of solving classical problems of rotor dynamics by suspending a spinning rotor with no contact, wear and lubrication, and controlling its dynamic behavior [1,3,4].…”

Section: Introductionmentioning

confidence: 99%