Experimental assessment of a new fuzzy controller applied to a flexible rotor supported by Active Magnetic Bearings

Defoy, Benjamin; Alban, Thomas; Mahfoud, Jarir

doi:10.1533/9780857094537.6.379

Cited by 6 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Stiffness, damping, as well as load capacity, can be varied widely within physical limits, and can be adjusted to technical requirements. The dynamics of the contact-free hovering depends mainly on the implemented control law [38][39][40][41][42][43]. The suitable work scope of AMBs is shown in Fig.…”

Section: Operation Range Of Gfbs and Ambsmentioning

confidence: 99%

“…13 The dynamics of the contact-free hovering depends mainly on the implemented control law. 14–19 Current industrial applications of AMBs include vacuum and cleanroom systems, 20,21 machine tools, 22 medical devices, 23,24 turbo-machinery, 25,26 and Danfoss turbocor compressors. 27,28 However, in high-speed applications, AMBs are easily affected by structural resonance, which is the primary reason leading to the control system instability.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Theoretical investigation of hybrid foil-magnetic bearings on operation mode and load sharing strategy

Zhang

Yin

Guan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

This paper presents a theoretical investigation on operation mode and load sharing strategy of hybrid foil-magnetic bearings (HFMBs). According to the inherent characteristics of gas foil bearings (GFBs) and active magnetic bearings (AMBs), six possible work scopes are discussed to understand the operation mode of HFMBs. A numerical model coupling the calculations of the film pressure in GFBs and the magnetic forces in AMBs is conducted to predict the operation performance of HFMBs. The accuracy of the model is proved by comparing the predicted and tested friction torques. Analysis on the static and dynamic performance of HFMBs within three representative cases is conducted by varying the load sharing ratio. The dynamic supporting stiffness and operation position of HFMBs can be obviously enhanced by adjusting the operating mode and load sharing strategy. Results show that the direct stiffness and dynamic damping of HFMBs adopting hybrid mode are significantly higher than those adopting AMB or GFB independent mode.

show abstract

Section: Operation Range Of Gfbs and Ambsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Theoretical investigation of hybrid foil-magnetic bearings on operation mode and load sharing strategy

Zhang

Yin

Guan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

show abstract

“…The PCE, which represents the uncertainties by truncated polynomials, is nonintrusive and frequently used. Fuzzy-set algorithms were also adopted by some researchers [20,21]. Liao [22] proposed a global resonance optimization method for uncertainty quantification and applied it to rotor systems.…”

Section: Introductionmentioning

confidence: 99%

Transient Analysis of Speed-Varying Rotor with Uncertainty Based on Interval Approaches

Wei

Gou

et al. 2018

Discrete Dynamics in Nature and Society

View full text Add to dashboard Cite

The nonintrusive Chebyshev interval method is used to analyze the transient response of a rotor system. The main idea is to analyze the uncertainty in speed-varying rotor systems and reduce the error in the calculation. The hybrid analysis procedure, which combines the black-box modeling and overestimation controlling, is proposed via the Chebyshev approximation and searching the extreme values of the approximation function for the uncertain response. It can both increase accuracy and improve the computational efficiency of the proposed method. Effects of the uncertain parameters on response bounds and estimation errors of the system are investigated, e.g., supporting stiffness and damping. The accuracy and efficiency of the proposed method are verified via comparing with the scanning method. Overestimation effects caused by the interval arithmetic can be controlled, particularly the sensitive domains near the critical speed. It can provide guidance for general uncertain transient mechanical systems, particularly those that have severe fluctuations near resonances.

show abstract

Dynamic Modelling and Vibration Control of a Turbomolecular Pump with Magnetic Bearings in the Presence of Blade Flexibility

Moreira

Thouverez

2018

Conference Proceedings of the Society for Experimental Mechanics Series

View full text Add to dashboard Cite

Experimental assessment of a new fuzzy controller applied to a flexible rotor supported by Active Magnetic Bearings

Cited by 6 publications

References 16 publications

Theoretical investigation of hybrid foil-magnetic bearings on operation mode and load sharing strategy

Theoretical investigation of hybrid foil-magnetic bearings on operation mode and load sharing strategy

Transient Analysis of Speed-Varying Rotor with Uncertainty Based on Interval Approaches

Dynamic Modelling and Vibration Control of a Turbomolecular Pump with Magnetic Bearings in the Presence of Blade Flexibility

Contact Info

Product

Resources

About