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针对飞行中的燃油液面晃动的测量误差问题,提出光纤压力补偿算法测量燃油。利用不同数量光纤压力传感器测量高度确定出油平面;根据光纤压力传感器的特性和飞机飞行姿态以及三轴加速度信息,补偿计算油箱油量。讨论传感器最优布局,通过计算机辅助三维交互式建模软件建立燃油体模型,根据特性数据得出单传感器和双传感器布局下的燃油体体积参数和质量。仿真结果表明双传感器的测量误差为0.078%,测量精度较高。双传感器布局下的光纤压力补偿算法可以较好地解决由于飞机姿态改变带来的燃油晃动的测量误差的问题。
Aiming at the measurement error of the liquid level fluctuation in flight, a fiber pressure compensation algorithm is proposed to measure the fuel. The use of different numbers of optical fiber pressure sensor to determine the height of the measured oil plane; according to the characteristics of the optical fiber pressure sensor and the aircraft flight attitude and three-axis acceleration information to compensate for the calculation of fuel tank. Discusses the optimal layout of the sensor, establishes the fuel body model by the computer-aided three-dimensional interactive modeling software, and obtains the volume parameters and the mass of the fuel body under the single sensor and the dual sensor layout according to the characteristic data. The simulation results show that the measurement error of dual sensor is 0.078%, and the measurement accuracy is high. The fiber pressure compensation algorithm under the dual sensor layout can better solve the measurement error of fuel sloshing caused by the change of aircraft attitude.