基于DASP的海水马达振动分析和故障诊断研究

Vibration Analysis and Fault Diagnosis Based on DASP for Seawater Hydraulic Motor

基于DASP虚拟仪器测试平台,依托机械振动理论和设备故障诊断技术,结合海水柱塞马达振动信号采集及分析处理手段,搭建了海水柱塞马达的故障诊断实验系统。通过对海水柱塞马达在正常和故障两种状态下振动信号的时域分析与频谱分析,得到了海水柱塞马达配流盘"气蚀"损坏典型故障的识别特征,从而对柱塞泵/马达的故障机理和故障诊断有了更深入的了解。将基于DASP的测试技术应用于海水柱塞马达的振动测试,不仅能够获得海水柱塞马达振动的实时测试信号和振动特性图谱,还可获得振动机理分析所需的更高的测试精度和效率,在工程实践中具有较好的推广价值。

The hydraulic testing system for a seawater piston motor is built based on the DASP virtual instrument test platform, the mechanical vibration theory and the fault diagnosis technology, the seawater piston motor vibration signal acquisition and analysis method. By the time-domain analysis and frequency spectrum analysis of vibration signals of seawater piston motor under normal and fault conditions, we obtain the identification features of typical faults of cavitation damage, and get a deeper understanding on fault mechanism and diagnosis of piston pump/mo- tor. Applying this testing technology to vibration testing of seawater piston motors, we can not only obtain the sea- water piston motor test signal and vibration signal in real time, but also get higher test accuracy and efficiency.