某机载雷达频综器减振方案优化与试验评估  

Vibration Isolation System Optimization and Test Verification for Airborne Radar Frequency Synthesizer

作　　者：宋敏[1,2] SONG Min(No.38th Research Institute of China Electronics Technology Group Corporation,Hefei 230088,China;National Industrial Design Center（CETC 38）,Hefei 230088,China)

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088 [2]国家级工业设计中心(中电38所),安徽合肥230088

出　　处：《机械与电子》2018年第7期28-33,共6页Machinery & Electronics

摘　　要：针对某机载雷达频综器在功能性振动试验中钢丝绳隔振器发生疲劳破坏的问题,开展优化设计。对原减振设计方案中的不利于结构耐久的因素进行分析,探明导致钢丝绳隔振器疲劳破坏的主要原因。在对原减振系统分析的基础上,分别从系统固有频率、隔振器安装方式和限位设计3个方面对频综器减振系统进行优化设计。最后对改进后的减振系统及其频综器进行了动态相噪和耐久性试验评估。结果显示,改进后的减振设计方案既满足相噪指标要求,又满足耐久性使用要求,成功解决了该频综器减振系统疲劳破坏的问题。In the vibration test,the wire rope absorber of the frequency synthesizer for an airborne radar may be broken because of fatigue.To solve this problem,an optimal method is proposed in this paper.First,the structural disadvantage of traditional vibration isolation design was analyzed to verify the cause of the breaking.Then,based on the analysis,the vibration isolation design was optimized in three ways,namely,changing natural frequency of the system,improving the installation of the absorber and designing spacing block.Finally,the dynamic phase noise and the durability of the improved vibration reduction system and its frequency synthesizer were tested and evaluated.The results show that the solution has high durability and can meet the requirement of phase noise.

关 键 词：隔振器 减振设计 频综器 相位噪声 试验分析 

分 类 号：TN73[电子电信—电路与系统] TB123[理学—工程力学]