论文部分内容阅读
旋转叶片的振动测量技术主要向非接触测量方向发展,硬件技术基本成熟,国内外主要是研究各种算法。本文对研制的基于叶尖定时原理的非接触振动测量系统的小间距算法进行了简要介绍,并采用该测量系统对某风扇试验件转子叶片的振动频率和幅值进行了测量,对6 700 r/min附近叶片的共振情况进行了分析。与应变计测量结果和理论计算结果进行的对比分析表明,三者在振动频率方面具有很好的一致性。
The vibration measurement technology of rotating vane mainly develops to the non-contact measurement direction, and the hardware technology is basically mature. Various algorithms are mainly studied at home and abroad. In this paper, the small pitch algorithm of the non-contact vibration measurement system based on the principle of tip timing is introduced briefly. The vibration frequency and amplitude of the rotor blade of a fan test piece are measured by this measurement system. / min near the leaves of the resonance were analyzed. The comparative analysis with strain gage measurement results and theoretical calculation results shows that the three have good consistency in terms of vibration frequency.