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针对某型前起落架试验中弹射杆旋转角速度测量过程中,受角速度传感器安装位置所限而无法准确测试的问题,提出了利用加速度、位移传感器、高速摄像进行弹射杆空间角速度的测量方案,并结合数据处理技术对信号进行修正,减小由于安装方式对测量带来的影响。详细讨论了两种间接测量方案的特点,并对各种测试方案进行对比。结果表明,高速摄像方案精度最高为最优方案,在考虑提高测试效率的情况下,间接测试方案2精度与高速摄像相当,指出加速度传感器间接测量的优越性与普遍性。
Aiming at the problem that a certain type of nose gear can not be accurately tested because of the installation position of the angular velocity sensor during the measurement of the rotational angular velocity of the ejector pin in the test of the nose gear, a measurement scheme of the angular velocity of the ejector rod using acceleration, displacement sensor and high speed camera is proposed Combined with data processing techniques to correct the signal to reduce the impact of the installation due to measurement. The characteristics of two indirect measurement schemes are discussed in detail, and the comparison of various test schemes is carried out. The results show that the highest accuracy of the high-speed camera scheme is the optimal solution. Considering the improvement of the test efficiency, the accuracy of the indirect test scheme 2 is equivalent to that of the high-speed camera. The superiority and universality of the indirect measurement of the acceleration sensor are pointed out.