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Super-high speed medical micro-motor design and thermal field calculation

Author:
Sun, Liangwei  Pi, Xitian  Liu, Hongying  Li, Jingcan  


Journal:
INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS


Issue Date:
2016


Abstract(summary):

As the core component of a precision power operation system for Neurosurgery, medical micro-motors need to have characteristics of high reliability, high speed, high precision, low temperature rise and capability of repeated autoclave sterilization. Therefore, high requirements of design and manufacture are put forward. In view of the above, a super-high speed micro motor with a micro flow channel auxiliary cooling system was proposed in this paper. We used Ansoft to analyze the magnetic field distribution of the motor and operating performances at rated speed, and calculate the motor loss and motor temperature distribution. The results showed that the motor speed could reach 89000 Rpm in stable operation and the output power was 60 W. The temperature rise of the rotor and stator core was very low, when the temperature of the liquid coolant in cooling system was 20 degrees C, which could efficiently prolong load working hours. This research provided a new idea for the design of a super-high speed micro-motor utilized in neurosurgical power operation system.


Page:
189---200


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