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| Permanent Magnet Gear Damping System and Its Application in the Non-Contact Driving Device for Artificial Heart |
| Xia Dong |
| Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China |
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Abstract In order to suppress the speed fluctuation of the passive magnet, increase the stability of the transmission speed and reduce the possibility of out of sync, it is proposed to add a damping system on the magnet of permanent magnet gear transmission mechanism. As an application example of permanent magnet gear transmission mechanism, the eddy current distribution and damping torque of the non-contact permanent magnet driving device for the power supply of artificial heart blood pump are analyzed and calculated using finite element method, and the damping characteristics with the damping cylinder and without the damping cylinder are compared. Research results show that the damping cylinder can produce larger damping torque in the speed fluctuations of the passive magnet and greatly increase the stability of the transmission speed. Through this research, the working mechanism and operational characteristics of the damping system of permanent magnet gear transmission mechanism are in-depth understood, and the theoretical foundation for the optimization design of the damping system is laid.
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Received: 31 December 2011
Published: 28 November 2013
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2013, Vol. 28 
