飞机故障预警对于飞行安全具有重要意义,而实现故障预警的重要前提是要建立正确的故障模型。针对这个问题,结合飞行数据的特殊性,提出了一种基于改进插值边缘算子的飞机故障模型表示方法。该方法首先计算出飞行数据序列上各点的边缘强度和插值误差,运用改进的插值边缘算子算法选取出飞机故障模型的边缘点。实验结果表明,该方法不仅保留了飞行数据序列的主要形态,而且也保留了重要极小值点,具有更小的拟合误差,达到正确建立故障模型的目的。 Aircraft fault warning is of great significance to flight safety, and the important prerequisite for realizing fault warning is to establish the correct fault model. In response to this problem, combined with the particularity of flight data, a method of aircraft fault model representation based on improved interpolation edge operator is proposed. The method first calculates the edge strength and interpolation error of each point on the flight data sequence, and selects the edge point of the aircraft fault model by using the improved interpolation edge operator algorithm. The experimental results show that this method not only retains the main form of the flight data series, but also retains important minimum points, has a smaller fitting error, and achieves the purpose of correctly establishing the fault model.