低频电流解调技术在液压设备状态监测中的应用研究  

Measurement of the Hydraulic Devices Based on Low Frequency Demodulated Technique

作　　者：马玉[1] 

机构地区：[1]西安建筑科技大学机电学院,陕西西安710055

出　　处：《机床与液压》2009年第4期164-166,125,共4页Machine Tool & Hydraulics

基　　金：陕西省自然科学基金资助项目(2003E203)

摘　　要：机械工程中液压设备的许多故障信息是以调制的形式存在于所监测的电气信号及振动信号中,通过自行设计的低频解调及报警电路对这些信号进行解调处理,针对具体的液压工况实现了对整个液压系统的在线状态监测,通过实验验证了用监测调制信号的方式来监测液压设备运行状态的可行性。The failure informations of hydraulic devices of mechanical equipment is contained in electrical and vibrations signals monitored, which are often amplitude-modulated. The low frequency hardware demodulated circle and the alaim circuit were deigned, and the online monitoring of hydraulic system to specific conditions was realized. The experimental result shows that it is feasible to monitor the operation status of hydraulic equipment with the modulation signal.

关 键 词：低频解调技术 液压设备 状态监测 

分 类 号：TH137[机械工程—机械制造及自动化] TP277[自动化与计算机技术—检测技术与自动化装置]