摘要
介绍了燃气可控发动机测试系统,分析并建立了推力测试模型,提出了基于简化模型和精确模型的标定数据处理方法,并进行了不确定度评估。原位标定数据处理结果表明,简化模型算法可以作为一种近似的燃气可控发动机原位标定处理方法,其标定系数相对不确定度为2.06%;精确模型算法可得到更高的标定系数处理精度,相对不确定度从2.06%提高到0.31%;精确模型算法能够表征通道灵敏度差异、动架耦合及定位不准等现场因素的影响,从而降低对试验台调试的要求。
The structure of the test system for gas controllable engine was introduced and the thrust test model was analyzed and established.The calibration data processing algorithms based on the simplified model and the precise model were proposed and the uncertainty was evaluated for both means.The results of the in-situ calibration data processing show that the simplified model algorithm can be used as a rough calibration data processing method as it＇s relative uncertainty is 2.06%.The precise model algorithm can get more precise calibration coefficients as the relative uncertainty is improved from 2.06% to 0.31%.In addition,the precise model algorithm can reflect some in-situ factors such as difference of channel sensitivity,coupled extent of moveable frame and position error,requiring less test-bed debugging work.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2011年第5期659-662,共4页
Journal of Solid Rocket Technology
关键词
燃气可控发动机
推力测试模型
原位标定
数据处理
gas controllable engine
thrust test model
in-situ calibration
data processing
