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Novel magnetorheological brake with self-protection and water cooling for elevators

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Abstract

This study aims to design a magnetorheological (MR) brake with self-protection and heat dissipation functions for elevators. Using permanent magnet system technology, the MR brake can not only form a double magnetic field with excitation coils to improve braking torque under normal operation but also provide braking torque for protection in case of power failure. In addition, a cooling channel is designed in the braking shaft of the MR brake to ensure effective heat dissipation of the MR fluid. In this work, the structure, material, and magnetic circuit of the MR brake is first developed. Then, finite element, magnetic field, and thermal field analyses are conducted on the brake. Finally, a prototype of the brake is produced, and its performance is tested. Results show that the braking torque, especially the self-protection function, meets the demands of the elevator; the increase in temperature during braking is minor; and the noise level is low.

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Authors and Affiliations

  1. College of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, 350116, China

    Hui Huang, Shumei Chen & Kaifeng Chen

Authors
  1. Hui Huang
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  2. Shumei Chen
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  3. Kaifeng Chen
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Corresponding author

Correspondence to Shumei Chen.

Additional information

Recommended by Associate Editor Cheolung Cheong

Huang Hui received his B.Sc. degree in 2009 and his M.Sc. degree in 2012 from College of Mechanical Engineering and Automation, Fuzhou University, China. Now he is a Ph.D. candidate and experimentalist at Fuzhou University. His main research areas are hydraulic transmission and control, noise and vibration control, and magnetorheological technology and its application.

Shumei Chen is a Professor, Doctoral Supervisor and Vice-Principal of College of Mechanical Engineering, Fuzhou University, Fuzhou, China. She received her Ph.D. in Mechanical Engineering from Beijing Institute of Technology, Beijing, China in 2004 and then continued her post-doctoral research in the Department of Mechanical Engineering, the University of Sheffield, UK. She is the President of Fujian Province Association for Hydraulic and Pneumatic Engineering. Her research interests include control strategy of Magnetorheological/ electrorheological devices, fluid transmission and control, engineering applications of artificial intelligence, etc.

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Huang, H., Chen, S. & Chen, K. Novel magnetorheological brake with self-protection and water cooling for elevators. J Mech Sci Technol 32, 1955–1964 (2018). https://doi.org/10.1007/s12206-018-0403-6

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  • DOI: https://doi.org/10.1007/s12206-018-0403-6

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