Numerical and experimental analysis of harmonic response of ultra-high speed camera rotating mirror

The harmonic response analysis for the rotating mirror of ultra-high speed camera was presented based on the numerical analysis for obtaining the frequency-amplitude characteristic curves and stress contour under the sine excitation. There are two peak values at the 354 Hz and 1 600 Hz in the frequency-amplitude characteristic curves of rotating mirror, but the peak amplitude at 354 Hz is further larger than the other. The resonance zone of the first torsion and bending are repeated. The stress of the first bending is 358 times than the stress of rotating mirror under the uniform speed. Then, rotating mirror experimental analysis was carried out to obtain the frequency-amplitude characteristic curves of rotating mirror through the rotating mirror test system. In the displacement response c