Numerical and experimental research for dynamic sensitivity of rotating mirror of ultra-high speed camera

Chun-hui Yu; Chun-bo Li; Chun-ping Liu; Jin-long Chai; Hong-zhi Wang; Jing-zhen Li; Hong-bin Huang

doi:10.1117/12.899990

8 September 2011 Numerical and experimental research for dynamic sensitivity of rotating mirror of ultra-high speed camera

Chun-hui Yu, Chun-bo Li, Chun-ping Liu, Jin-long Chai, Hong-zhi Wang, Jing-zhen Li, Hong-bin Huang

Author Affiliations +

Proceedings Volume 8191, International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies; 81910Q (2011) https://doi.org/10.1117/12.899990
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

The numerical analysis and experiment about dynamic sensitivity of rotating mirror were done to verify the influence of the structural dimensions of rotating mirror on the natural frequency. Firstly, the model of dynamic sensitivity of rotating mirror was established by the ANSYS Parameter Design Language, then the dynamic sensitivity analysis of rotating mirror was done based on the Monte Carlo method and the Latin Hypercube Sampling Technique. The result shows that the spearman rank correlation coefficient of basic variables is different from each other, which reveals that the variables impact the natural frequency in different ways. The radius of rotating mirror body R₅ and the radius of shaft segment R₂affect mostly the natural frequency among these variables, and the length of the shaft segment L1 affects hardly the natural frequency of rotating mirror. R5 and R2 influence the same natural frequency in opposite way. With the single variable principle, the experiments for dynamic sensitivity were done to examine the results of numerical simulation. The results show that the R5 of rotating mirror increase by 4% which cause the first natural frequency value decreasing from 466.3 to 426.6 Hz. However, when the length of L1 of rotating mirror reduces about 10% the amplitude-frequency response curve of rotating mirror is almost unchanged. The results of experiment are good agree with the numerical analysis show that the numerical analysis is a high accurate method to optimize the structural size of rotating mirror for avoiding the influence of resonance.

Citation Download Citation

Chun-hui Yu, Chun-bo Li, Chun-ping Liu, Jin-long Chai, Hong-zhi Wang, Jing-zhen Li, and Hong-bin Huang "Numerical and experimental research for dynamic sensitivity of rotating mirror of ultra-high speed camera", Proc. SPIE 8191, International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies, 81910Q (8 September 2011); https://doi.org/10.1117/12.899990

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