摘要
为准确测量直升机标准桨叶在动平衡试验中的挥舞参数,该文采用桨叶切割激光光路方法把位置参数转化为激光脉冲时序参数,实现桨叶挥舞参数的非接触测量。通过补偿算法降低桨叶挥舞角自身引起的非线性误差,利用测量装置本身的激光器和时序算法对测量系统的安装参数进行定位校准,用一组标准厚度的模拟桨叶标定桨叶挥舞参数测量装置。试验结果表明,测量系统的测量不确定度满足标准桨叶校准的技术要求。该方法实现了标准桨叶挥舞参数的测量,而且测量结果可溯源到几何量标准。
In order to measure the flapping track of standard rotor blade in dynamic balance test, a method which is based on curtaining off the laser bean by rotor blades to transform the position parameters into pulse-train analysis is proposed to measure the flapping height of standard blades with non-contacting measurement. The nonlinear error caused by flapping-angle is reduced by compensatory algorithm. The location-parameters of the measurement system can be calibrated with the lasers and pulse-train algorithm. The flapping parameters measurement system is calibrated with a series of definite thickness simulator of blades. The test results indicate that the uncertainty of flapping parameters meets the calibration requirements of standard rotor blades. This method is effective in measurement of flapping parameters of standard blades, and the measurement data is traced to the national standard of length metering.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2009年第2期208-214,共7页
Journal of Nanjing University of Science and Technology
基金
国防科技工业"十一五"技术基础科研项目(07B24003077)
关键词
标准桨叶
动平衡试验
挥舞参数
校准
standard blades
dynamic balance tests
flapping track
calibratation
