飞行试验脚蹬力测试系统在线校准技术研究

Research on on-line Calibration Technology of the Pedal Force Testing System in Flight Test

飞行试验中脚蹬力测试系统的校准,常规采用将测试系统拆卸后进行校准的方式,易造成传感器损坏,且所经环节多工作效率低;文章对脚蹬力传感器测力原理及供电电压对传感器输出的影响进行研究,提出一种新的脚蹬力测试系统在线校准方法解决上述问题;并对该方法进行验证,对多架试验机共6组脚蹬力测试系统分别采用传统方法及新方法进行校准,结果表明两种校准方法下的校准曲线基本一致,最大偏差不超过总测量范围的0.15%,满足飞行试验机载测试精度的需求;最终表明该校准方法准确可靠,可应用于机载脚蹬力测试系统校准。

In the calibration of the pedal force testing system,the conventional method is to remove the testing system for calibration,which is easy to cause sensor damage and low efficiency.In this paper,the measuring principle of the pedal force sensor and the influence of the power supply voltage on the output of the sensor are studied,and a new on-line calibration method of the pedal force testing system is proposed to solve the above problems.The calibration results show that the calibration curves based on the two calibration methods are basically the same,with the maximum deviation not exceeding 0.15%of the total measurement range,which meets the requirements of airborne test accuracy for flight tests.The results show that the calibration method is accurate and reliable,and can be applied to the calibration of airborne pedal force testing system.