中波PDM广播发射机关键器件的故障诊断与维修技术研究  

Research on Fault Diagnosis and Maintenance Technology of Key Components in Medium Wave PDM Broadcast Transmitter

作　　者：符晓明 朱毅峰 顾育方 FU Xiaoming;ZHU Yifeng;GU Yufang(Wuxi Zhongbo Launching Station,Wuxi 214046,China)

机构地区：[1]江苏无锡中波发射台,江苏无锡214046

出　　处：《电声技术》2025年第1期138-140,共3页Audio Engineering

摘　　要：针对中波脉冲宽度调制(Pulse Width Modulation,PDM)广播发射机的高频激励器、功率放大器以及输出网络故障,提出一种自动化故障诊断与维修技术,通过波形检测、频率调谐、增益控制以及阻抗匹配来提高诊断效率与系统性能。MATLAB仿真结果表明,该技术在诊断准确率、响应速度、功耗、频谱稳定性以及增益恢复方面优于传统方法,显著提升了发射机的可靠性和信号质量。Aiming at the faults of high frequency exciter,power amplifier and output network of Pulse Width Modulation(PDM)broadcast transmitter,an automatic fault diagnosis and maintenance technology is proposed,which improves the diagnosis efficiency and system performance through waveform detection,frequency tuning,gain control and impedance matching.MATLAB simulation results show that this technology is superior to traditional methods in diagnosis accuracy,response speed,power consumption,spectrum stability and gain recovery,which significantly improves the reliability and signal quality of the transmitter.

关 键 词：脉冲宽度调制(PDM) 广播发射机 故障诊断 维修优化 

分 类 号：TN948.53[电子电信—信号与信息处理]