Frequency response function calibration method based on sensor quality identification

The invention discloses a frequency response function calibration method based on sensor quality identification. The method includes the steps that frequency response functions shown in the description are measured in sequence; then, the four measured frequency response functions are used for obtain...

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Bibliographische Detailangaben
Hauptverfasser: HE WENHAO, REN JUN, ZHANG QIANGHAO, WU ZHENGHU, YAN ZICHENG
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a frequency response function calibration method based on sensor quality identification. The method includes the steps that frequency response functions shown in the description are measured in sequence; then, the four measured frequency response functions are used for obtaining the sensor identification quality, and then a calibration factor is calculated; finally, all themeasured frequency response functions are multiplied by the reciprocal 1/alpha of the calibration factor. Therefore, all the measured frequency response functions are calibrated. The method is mainlyapplied to calibration of inaccurate frequency response function measurement problem caused by improper sensitivity parameter setting of a force sensor or an acceleration sensor in a modal test. Thecalibration method can be carried out on original modal test equipment, and additional sensors or additional mass blocks and the like are not needed, so that calibration is more reliable and convenient. 本发明公开了种基于传感器质量辨识的频响函数校准方