| A Dynamic Calibration Technique for Piezoelectric Sensors Using Negative Going Dynamic Pressure |
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Eung-Su Kim |
| 부방향 동압력을 이용한 압전형 압력센서의 교정기법 |
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김응수 |
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국방과학연구소 |
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| Abstract |
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The determination of response characteristics for pressure sensors is routinely limited to static calibration against a deadweight pressure standard. The strength of this method is that the deadweight device is a primary standard used to generate precise pressure. Its weakness lies in the assumption that the static and dynamic responses of the sensor in question are equivalent. Differences in sensor response to static and dynamic events, however, can lead to serious measurement errors. Dynamic techniques are required to calibrate pressure sensors measuring dynamic events in milliseconds. In this paper, a dynamic calibration using negative going dynamic pressure is proposed to determine dynamic pressure response for piezoelectric sensors. Sensitivity and linearity of sensor by the dynamic calibration were compared with those by the static calibration. The uncertainty of calibration results and the goodness of fit test of linear regression analysis were presented. The results show that the dynamic calibration is applicable to determine dynamic pressure response for piezoelectric sensors. |
| Key Words:
Piezoelectric Pressure Sensor, Dynamic Calibration, Static Calibration, Regression Analysis, Uncertainty |
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