When the sensor is determined, the matching measurement method and measuring device can be determined. The success or failure of the measurement results depends to a large extent on whether the sensor selection is reasonable.
3. Frequency response characteristics
The frequency response characteristics of the sensor determine the frequency range to be measured, and the measurement conditions must be kept undistorted within the allowable frequency range. In fact, the response of the sensor always has a certain delay, and the shorter the delay time, the better.
The frequency response of the sensor is high, and the measurable signal frequency range is wide, and the inertia of the mechanical system is large due to the structural characteristics, so the frequency of the low-frequency sensor can be measured.
In dynamic measurement, the response characteristics should be based on the characteristics of the signal (steady state, transient, random, etc.) to avoid excessive errors.
