【作者】 蒋文亮； 刘晨； 侯学彦； 黄金泉；

【Author】 JIANG Wen-liang;LIU Chen;HOU Xue-yan;HUANG Jin-quan;Jiangsu Province Key Laboratory of Aerospace Power System,College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics;AVIC China Aviation Motor Control System Institute;Collaborative Innovation Center for Advanced Aero-engine;

【机构】 南京航空航天大学能源与动力学院江苏省航空动力系统重点实验室； 中航工业航空动力控制系统研究所； 先进航空发动机协同创新中心；

【摘要】 现代航空发动机全权限数字电子控制(FADEC)系统朝高性能、高安全、高可靠、低污染方向发展,这些都要求FADEC系统对控制参数具有高精度测量以及高速运算的能力。压力传感器是FADEC领域中应用非常广泛的一种重要传感器,对整个发动机控制性能有着直接的影响。为满足航空发动机恶劣工况下控制精度的要求,提出一种基于FPGA的航空发动机智能压力传感器技术,通过FPGA的二维线性插值算法对压力及温度变化所引起的误差进行补偿,提高了测量精度和稳定性。试验结果表明,该压力传感器在-55~+110℃温度范围和一定的压力范围内达到0.15%的测量精度,并具有可靠性高、维修性好等优点。研究成果已应用于某型航空发动机全权限数字电子控制系统中,并通过了300多小时可靠性试验验证。更多还原

【Abstract】 The high performance,high security,high reliability and low pollution is becoming one of the most pressing needs for modern aero-engine full authority digital electronic control(FADEC) system,and requires FADEC system to have the capability of high-precision measurement and high-speed computation.Pressure sensor is one of the most widely used sensors in FADEC system,and is critical to the whole aero-engine control performance.In order to improve the measurement precision of the pressure signal in aero-engine and meet the control requirements,smart aero-engine pressure sensing technology based on FPGA is proposed.In order to improve the precision and stability,a two-dimension linear interpolation method based on FPGA is used to compensate the error caused by pressure and temperature variation.Results indicate that the pressure sensor can reach the accuracy of 0.15%in a certain pressure range and a temperature range of-55 ~ +110 °C,It also has advantages of high reliability and maintainability.The results have been applied to a certain aero-engine FADEC system and been validated in 300 h reliability experiment.更多还原