Skip to main content
SpringerLink
Log in

Effects of rotor misalignment in airgap on dynamic response of

  • Published:
KSME International Journal Aims and scope Submit manuscript

Abstract

Vibration of a BLDC motor is a coupled phenomenon between mechanical characteristics and magnetic origins which takes place through the motor airgap. When relative misalignment of a rotor in the airgap is introduced during assembly, the dynamic characteristics of the motor system are affected. The rotor-motor system used in a washing machine is modeled using FETM and magnetic forces in a BLDC motor with radial rotor eccentricity are determined analytically. The transient whirl responses of a rotor system supported on two roller bearings with relative misalignment in the motor airgap are investigated by considering mechanical and magnetic coupling effects. Results show that rotor misalignment in the airgap considerably affects the vibration of the rotor-motor system.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Jang Gunhee and Lieu, Dennis K., 1996, “Analysis of the Magnetic Force and the Torque in a Brushless DC Motor,”KSME International Journal, Vol. 10, No. 1, pp. 37–48.

    Google Scholar 

  • Kim Tae-Jong, Hwang Sang-Moon and Park No-Gill, 2000, “Analysis of Vibration for Permanent Magnet Motors Considering Mechanical and Magnetic Coupling Effects,”IEEE Transactions on Magnetics, Vol. 36, No. 4, pp. 1346–1350.

    Article  Google Scholar 

  • Kim Ungtae and Lieu, Dennis K., 1998, “Magnetic Field Calculation in Permanent Magnet Motors with Rotor Eccentricity: With Slotting Effect Considered,”IEEE Trans. Mag. Vol. 29, pp. 2253–2266.

    Google Scholar 

  • Kumar, A. S. and Sankar, T. S., 1986, “A New Transfer Matrix Method for Response Analysis of Large Dynamic Systems,”Computers & Structures, Vol. 23, No. 4. pp. 545–552.

    Article  MATH  Google Scholar 

  • Subbiah, R. and Kumar, A. S., 1988, “Transient Dynamic Analysis of Rotors Using the Combined Methodologies of Finite Elements and Transfer Matrix,”Journal of Applied Mechanics, Trans. ASME, Vol. 55, pp. 448–452. Yoon Yeo-Kwon, Jeong Ho-Seop and Lee

    Article  MATH  Google Scholar 

  • Chong-Won, 1997, “Compensation of Tool Axis Misalignment in Active Magnetic Bearing Spindle System”KSME International Journal, Vol. 11, No. 2, pp. 155–163.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. School of Mechanical Engineering and Research Institute of Mechanical Technology, Pusan National University, 609-735, Pusan, Korea

    Tae Jong Kim, Kyung Tae Kim, Sang-Moon Hwang, No-Gill Park & Shi-Bok Lee

Authors
  1. Tae Jong Kim
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Kyung Tae Kim
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Sang-Moon Hwang
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. No-Gill Park
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Shi-Bok Lee
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Tae Jong Kim.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kim, T.J., Kim, K.T., Hwang, SM. et al. Effects of rotor misalignment in airgap on dynamic response of. KSME International Journal 16, 1576–1582 (2002). https://doi.org/10.1007/BF03021659

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03021659

Key Words

Search

Navigation