某核心机重要性能参数测量误差初探

从某高推重比核心机的主要性能评定参数单位循环功、单位循环功耗油率和涡轮进口温度等间接测量参数的精度要求出发，充分利用燃油流量、转速、温度、压力测试传感器和测试系统的误差结果及误差统计原理，进行分离测量参数和数学模型的误差分析。通过测试传感器、测量系统（含二次仪表）的校准结果、核心机地面台试验参数测量数据，以及核心机性能诊断数学模型，分析了核心机的重要测量参数误差，减小核心机空气流量、单位循环功、单位循环功耗油率和涡轮进口温度的误差。

A preliminary study on measuring deviation of important parameters for a core engine

This paper deals with the deviation analysis of separation measurements and mathematical model for the precision of indirect-measured parameters of specific cycle power,specific fuel consumption of cycle power and turbine inlet temperature,which are the main rating parameters of a core engine,based on the statistic principles and deviation results of fuel flow,rotating speed,temperature,pressure measurement sensor and testing system.Key measurement parameters of the core engine are analyzed by testing the s...