基于热变形的微波开关轴承间隙设计

Thermal Deformation Based Microwave Switch Bearing Clearance Design

为了保证微波开关在-40?C~+100?C温度范围通道切换的可靠性,文中从热力学、材料力学等理论出发,通过理论分析、有限元仿真对微波开关中转子与轴承、轴承与基座之间的间隙进行设计及计算,并通过试验进行验证。结果表明:文中提出的微波开关轴承间隙仿真准确可靠,可有效预防开关中轴承与转子以及转子与基座之间的卡滞,保证了开关应用的可靠性。此仿真计算方法可应用于所有微波开关的轴承间隙设计,为微波开关的设计提供参考。

In order to ensure the reliability of the microwave switch channel switching in the temperature range of-40◦C∼+100◦C,the clearances between rotor and bearing and between bearing and base in the microwave switch are designed and calculated through theoretical analysis andfinite element simulation from the theories of thermodynamics and material mechanics.And verification is carried out through tests in this paper.The results show that the bearing clearance simulation of the microwave switch is accurate and reliable.It can effectively prevent the jamming between the bearing and the rotor and between the rotor and the base in the switch,and thus ensure the reliability of switch applications.This simulation method can be applied to the design of bearing clearances for all microwave switches and provide a reference for the design of microwave switches.