液体火箭发动机试验频率量信号的处理与仿真  

Processing and simulating of frequency signal in liquid propellant rocket engine test

作　　者：李琪琪[1] 叶斌[1] 陈锋[1] 董文华[1] 

机构地区：[1]北京航天试验技术研究所,北京100074

出　　处：《火箭推进》2008年第5期39-42,共4页Journal of Rocket Propulsion

基　　金：民用航天科研预先研究项目(C2220060304)

摘　　要：液体火箭发动机试验中频率量(流量、转速)数据曲线不规整,存在着"毛刺",影响了数据的准确性。采用仿真方法优化频率量信号采集模式,并用实际试验数据进行了验证。结果表明,仿真方法优化频率信号采集模式能有效地减少频率量曲线中的"毛刺"。In test of liquid propellant rocket engine, burr＇s occurrence in the data curve of frequency signal such as flow rate and rotating speed of pump affects the accuracy of measured data. According to optimizing the sampling mode of frequency signal, a simulation method is adopted to reduce the occurring burr in this paper. The method mentioned has been verified in real test and theresult shows that it can reduce the burr of the frequency curve effectively.

关 键 词：液体火箭发动机试验 数据处理 系统仿真 

分 类 号：V434.3[航空宇航科学与技术—航空宇航推进理论与工程]