基于数据融合的过载参数校准技术的研究

线加速度传感器是飞行试验获取飞机各机体轴系过载参数的基础,利用离心机对线加速度传感器进行校准是符合传感器真实物理意义的校准,在分析了安装旋转半径是影响传感器校准精度主要因素的基础上,提出了用重力场下的校准数据反算传感器在离心机上的旋转半径,并将自适应加权数据融合方法应用于单传感器的测试系统中精确计算旋转半径,从理论和实践两个方面验证了该方法的有效性,提高了线加速度传感器的校准精度。

Research on Overload Parameter Calibration Technology Based on Self-Adaptive Weight

Centrifugal calibrating linear acceleration sensor is the real physical meaning calibration.By analyzing that the mounting radius of the sensor is the main factor affecting the calibration accuracy of sensor,it is introduced to backward calculate the rotary radius of the sensor on the centrifuge by using calibration data under gravity field.A data fusion method of self-adaptive weight is applied to calculate the rotary radius in the testing system of single sensor.Thus,the validity of this method is verified both theoretically and practically,and the calibration accuracy of linear acceleration sensor is improved.