某功放设备高温低气压工作瞬态仿真、分析及优化  

Transient Simulation,Analysis and Optimization of a PowerAmplifier Equipment Under High Temperature and Low Pressure

作　　者：刘冠宏[1] LIU Guanhong(No.20 Research Institute of China Electronics Technology Group,Xi'an 710068)

机构地区：[1]中国电子科技集团公司第二十研究所,西安710068

出　　处：《舰船电子工程》2021年第6期82-86,共5页Ship Electronic Engineering

基　　金：国家自然科学基金优秀青年科学基金项目“结构优化设计”(编号:11722219-FF130);国防基础科研计划资助项目(编号:JCKY2017210A001)资助。

摘　　要：现代机载设备有在严酷的高温低气压环境下短时间工作的要求。此时,设备的温度并未达到稳态,故需要在时域上对设备进行瞬态的热分析。论文以一个改进研制的功放设备为例,按照平台要求的高温低气压试验条件对其进行了瞬态仿真,并在不增加结构总尺寸的前提下对其散热结构进行了瞬态传热状态的优化分析和优化设计。论文提出了“瞬态传热速度”的概念,可以应用于设备瞬态传热的状态分析。论文也可以为类似的电子设备改型和自然散热机箱设计提供参考。Modern airborne equipment is required to work for a short time in severe high temperature and low pressure environ⁃ment.At this time,the temperature of the equipment does not reach the steady state,so it is necessary to carry out the transient ther⁃mal analysis of the equipment in the time domain.Taking an improved power amplifier as an example,the transient simulation is car⁃ried out according to the high temperature and low pressure test conditions required by the platform,and the optimization analysis and design of the transient heat transfer state of the heat dissipation structure are carried out without increasing the overall size of the structure.In this paper,the concept of"transient heat transfer velocity"is proposed,which can be applied to the state analysis of transient heat transfer of equipment.This paper can also provide reference for similar electronic equipment modification and natural cooling chassis design.

关 键 词：电子设备 机箱设计 瞬态传热 高温低气压工作 瞬态热仿真 优化分析 

分 类 号：TH122[机械工程—机械设计及理论]