CONTROL VIBRATION OF IMBALANCE JEFFCOTT ROTOR BY MAGNETIC ABSORBER

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HEIDARI HAMIDREZA; MONJEZI BEHNAM

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:8 Page(s): 0-0

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Title

CONTROL VIBRATION OF IMBALANCE JEFFCOTT ROTOR BY MAGNETIC ABSORBER

Author(s)

HEIDARI HAMIDREZA | MONJEZI BEHNAM | Issue Writer Certificate

Keywords

ROTORQ2

VIBRATION CONTROLQ2

MAGNETIC ABSORBERQ1

DYNAMIC ABSORBERQ2

DISCONTINUOUS FORCEQ1

Abstract

Unbalance mass and imperfect bearings are the main sources of vibration in ROTOR dynamics systems.One way to decrease and control a ROTOR vibration is the use of MAGNETIC ABSORBERs. The magneticabsorber is used to control the position of the ROTOR and reduce its vibration. In this study, by applyingthe DYNAMIC ABSORBER system force and creating two new natural frequencies, the MAGNETIC ABSORBERbrings the system out of the resonance. Moreover, in order to decrease the vibration amplitude, twodifferent types of dynamics absorbers are designed in which they are checked by the MAGNETIC ABSORBERin a specific range of rotational frequency. In MAGNETIC ABSORBER controller system, the continuous forcewhich is applied to the main system by mass absorber is restored in sixteen levels discontinuously. It isseen that the vibration amplitude is reduced 13% in the area of natural frequency in comparison to themagnetic absorber with DISCONTINUOUS FORCE. In this paper, two different mass ratios are considered foreach one of the two absorber systems. It is observed that in the case of DYNAMIC ABSORBERs with highermass ratio, ROTOR vibration amplitude and the maximum force amplitude of the DYNAMIC ABSORBER systemdecrease. This issue can increase the accuracy of MAGNETIC ABSORBER system in the renewal of thedynamic absorber system force and reduce consumed electrical energy of the control system as well.

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APA: Copy

HEIDARI, HAMIDREZA, & MONJEZI, BEHNAM. (2016). CONTROL VIBRATION OF IMBALANCE JEFFCOTT ROTOR BY MAGNETIC ABSORBER. MODARES MECHANICAL ENGINEERING, 16(8), 0-0. SID. https://sid.ir/paper/359162/en

Vancouver: Copy

HEIDARI HAMIDREZA, MONJEZI BEHNAM. CONTROL VIBRATION OF IMBALANCE JEFFCOTT ROTOR BY MAGNETIC ABSORBER. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(8):0-0. Available from: https://sid.ir/paper/359162/en

IEEE: Copy

HAMIDREZA HEIDARI, and BEHNAM MONJEZI, “CONTROL VIBRATION OF IMBALANCE JEFFCOTT ROTOR BY MAGNETIC ABSORBER,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 8, pp. 0–0, 2016, [Online]. Available: https://sid.ir/paper/359162/en

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