固体火箭发动机推力测试曲线的处理算法优化

Research on Test Curve Processing Algorithm of Solid Rocket Engine Thrust

当前固体火箭发动机推力测试中人工处理数据误差大,效率低等缺陷.在采用GJB770-2005发动机静止实验法的基础上,组建基于内插式A/D采集卡的PCI总线测试系统,通过分析固体火箭发动机测试的工作时间、采样速率以及精度要求等,提出了一种固体火箭发动机推力曲线自动处理算法.通过仿真实验表明,设计的固体火箭发动机推力测试系统数据处理算法正确可行,解决了推力数据处理中手工作图法效率低、随机性大等缺点,和手工数据处理方法进行对比,其推力各参数测试精度在1.5%以内,且测试稳定性好,实现了固体火箭发动机出厂检验的自动化测试.

Processing of test data of solid rocket engine thrust has the disadvantages of greater error and low efficiency using artificial method. While using GJB770-2005 engine static test method, a PCI- bus test system based on interpolating A/l） acquisition card is built. An automatic processing algorithm of thrust test curve of the solid rocket motor is presented. Simulation results show that the data processing algorithm of solid rocket engine thrust test is feasible, which solves the problem of low efficiency by manual graphic method. Compared with manual data processing , the thrust testing precision reaches less than 1.5 %,and realizes the thrust test automation of solid rocket motor.