Typical Fault Diagnosis Method for High-speed Turbopump of Liquid Rocket Engine

摘要：

Turbopump is a high-fault-rate component in Liquid Rocket Engine (LRE). In this paper, the reasons of the typical fault of turbopump rotor blade abruption and abscission are analyzed. And, by the method of dynamic analysis, the vibration features of the fault are studied to select the frequency features diagnosing effectively the fault. Then, the extraction method of the features is researched. By means of transform processing, the speed variation influence on the vibration frequency is driven out to extract the stabile frequency features. With the fault data in turbopump historical test, it is shown that the fault of turbopump rotor blade abruption and abscission can be detected and diagnosed effectively by tracking the amplitude variation of the feature frequency.

作者: Lurui Xia Niaoqing Hu Guojun Qin Ming Gao

作者单位: College of Mechatronics Engineering and Automation,National University of Defense Technology Changsha 410073,China

会议类型: 国际会议

会议名称: The 2nd International Symposium on Systems and Control in Aeronautics and Astronautics(第二届航空航天系统与控制国际会议 ISSCAA 2008)

会议地点: 深圳

会议语种:英文

页码: 352-355

在线出版日期: 2008-12-10（万方平台首次上网日期，不代表论文的发表时间）