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Science and Technology of Nuclear InstallationsVolume 2012 2012, Article ID 205675, 6 pages

Research Article

College of Mechanical Engineering, Chongqing University, Chongqing 400044, China

Chongqing Automobile College, Chongqing University of Technology, Chongqing 400054, China

The Key Laboratory of Manufacture and Test Techniques for Automobile Parts, Chongqing University of Technology, Chongqing 400054, China

Received 15 June 2012; Revised 3 September 2012; Accepted 8 September 2012

Academic Editor: Yan Yang

Copyright © 2012 Jianzuo Ma et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The running efficiency of centrifugal fan affects the economical efficiency of the ventilation system. In this paper, we proposed a continuously variable transmission system based on magnetorheological fluid and shape memory alloy for improving the operating efficiency of the centrifugal fan. The equation of transmission torque developed by magnetorheological fluid is derived to compute the torque transmission ability in the continuously variable transmission system. A shape memory alloy spring actuator is designed to control the electric current in coil assembly. The results indicate that the change of temperatures has a tremendous influence on the electric current in coil assembly, the transmission torque of the continuously variable transmission system changes rapidly according to the temperatures acting on shape memory alloy spring actuator, and the output angular velocity of the centrifugal fan can be adjusted continuously.





Autor: Jianzuo Ma, Hongyu Shu, and Jin Huang

Fuente: https://www.hindawi.com/



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