文章摘要
靳国涛, 解海涛, 丁舸.基于油量区间估计的飞机左右机翼油箱输油不平衡故障诊断[J].空军工程大学学报:自然科学版,2021,22(1):45-49
基于油量区间估计的飞机左右机翼油箱输油不平衡故障诊断
Fault Diagnosis of Unbalanced Fuel Delivery of Aircraft’s Left and Right Wing Tanks Based on Fuel Quantity Interval Estimation
  
DOI:
中文关键词: 机翼油箱  输油不平衡  区间估计  故障诊断
英文关键词: wing tank  unbalanced fuel delivery  interval estimation  fault diagnosis
基金项目:
作者单位
靳国涛, 解海涛, 丁舸 中国航空工业集团公司成都飞机设计研究所 成都, 610091 
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中文摘要:
      对于机翼油箱载油量较多的飞机,左右机翼输油不平衡故障将会影响飞机操纵甚至飞行安全。针对地勤人员在飞机维护时普遍缺乏机翼输油不平衡故障诊断手段的问题,研究了一种基于油量区间估计的故障诊断方法。利用已有飞行数据得到左右机翼油量间的回归方程,求得机翼油量个别值的估计区间,修正后作为机翼油量的正常分布区间和故障检测方法,通过设置合理的故障判断条件,实现左右机翼油箱输油不平衡故障的有效诊断。实例验证结果表明:该方法可以准确检测出飞机机翼输油不平衡故障,降低再次飞行时故障发生率;同时该方法易实现,无需增加软硬件,可在地勤人员间快速推广使用,具有一定的应用前景。
英文摘要:
      For aircraft with more fuel quantity in the wing tank, imbalance of fuel delivery between left and right wing tanks affects control and even flight safety of aircraft. Aimed at the problems that ground crew generally have lack of fault diagnosis methods of wing tank transportation imbalance in aircraft maintenance, the fault diagnosis methods based on fuel quantity interval estimation are studied. The regression equation between the left and the right wing tanks fuel quantity is obtained by using the existing flight data, and the estimation interval of the individual value of wing tanks fuel quantity is obtained, which is used as the normal distribution interval of the wing tanks fuel quantity and fault detection method after being modified. By setting reasonable fault judgment conditions, the fuel delivery imbalance fault of left and right wing tanks can be realized effectively. The results show that the method can accurately detect the imbalance fuel delivery fault of aircraft’s wing tanks and reduce the failure rate when flying again. At the same time, the method is easy to realize without adding software and hardware, can be quickly used among ground crew, and has a certain application prospect.
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