某光电吊舱内方位电机组件低温摩擦特性分析研究

为提升产品可靠性和环境适应性，需对某光电吊舱内方位电机组件在-50℃的摩擦特性进行改善。分析了可能影响电机组件摩擦特性的因素，并针对各因素提出相应的改善措施，借助仿真与试验相结合的研究方法，对改善措施的效果进行了验证。经研究: -50℃时，电机组件摩擦力矩的增大既有低温单独作用的结果，也有低温和电机组件潜在因素共同作用的结果。电机组件在低温下的微变形不足以引起摩擦力矩的增大，通过增加电机保护罩和在电机与电机座之间增加厚度为1 mm的软磁合金薄片，能使电机的摩擦力矩降低到0.063 N·m。该改善措施适用于光电吊舱电机组件的设计及类似产品的开发研制。

Abstract

In order to improve product reliability and environmental adaptability, it is necessary to improve friction characteristics at -50℃ of interior orientation motor assembly in an electro-optical pod. Possible factors influencing friction characteristics of motor assembly are analysed, and corresponding improvement measures for these factors are put forward. Effectiveness of the improvement measures are verified with combination of simulation and experiment. Results show that at -50℃, increasing friction torque is both the result of the role of low temperature alone, and the results of low temperature and potential factors of motor assembly together. The micro deformation of motor assembly at low temperature is not sufficient to cause the increasing of friction torque. The friction torque of the motor can reduce to 0.063 N·m by adding a protective cover of the motor and a soft magnetic alloy sheet with a thickness of 1 mm between motor and motor seat. These improvements apply to the design of motor assembly of electro-optical pod and research of similar products.

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宁飞, 郑凤翥, 王惠林, 赵志草, 霍丽烨, 王培群. 某光电吊舱内方位电机组件低温摩擦特性分析研究[J]. 应用光学, 2017, 38(5): 700. Ning Fei, Zheng Fengzhu, Wang Huilin, Zhao Zhicao, Huo Liye, Wang Peiqun. Analysis of friction characteristics at low temperature of interior orientation motor assembly in an electro-optical pod[J]. Journal of Applied Optics, 2017, 38(5): 700.

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