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| Temperature Field Analysis and Temperature Rise Suppression of Ultra-Precision Short-Stroke Linear Motor |
| Li Liyi, Pan Donghua, Huang Xuzhen |
| Harbin Institute of Technology Harbin 150001 China |
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Abstract A novel double layer water cooling structure is proposed to suppress temperature rise of windings and shield thermal flow of motor surface, because the ultra-precision short- stroke linear motor(SSLM) is used to nanopositioning system. Firstly, the cooling model of cooling plate is established by FEM and analytic formulas; and then the thermal network model of short-stroke linear motor is established to analyze side surface temperature rise of motor, and proposed addition heat flow branch method to suppress surface temperature rise. The FEM results show that the side surface temperature rise of short-stroke linear motor is reduce from 10℃ to 2℃. The temperature testing results of prototype show that the maximum temperature rise of motor surface is 2℃, so this cooling structure could shield windings heat flow. In addition, thermal field model is as theory basis for design and optimization of ultra-precision short- stroke linear motor.
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Received: 10 September 2012
Published: 26 March 2014
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2013, Vol. 28 
