GB/T 20485.43-2021 Methods for the calibration of vibration and shock transducers—Part 43:Calibration of accelerometers by model-based parameter identification

Scope

This part of GB/T 20485 specifies the terminology and methods for parameter estimation and corresponding uncertainty evaluation in the mathematical models used to describe the input and output characteristics of vibration sensors. The methods described are based on the calibration procedures specified in ISO 16063-11, ISO 16063-13, ISO 16063-21, and ISO 16063-22, and the parameter estimation is performed based on the collected calibration data. This part is an extension of the existing procedures and definitions in the aforementioned standards, and the described uncertainty evaluation complies with the methods determined in ISO/IEC GUIDE 98-3 and ISO/IEC GUIDE 98-3-SP1.
The new features described in this part are used to improve the quality of calibration and measurement applications for broadband/transient input signals (such as shocks). This part provides a method for describing the response characteristics of vibration sensors to transient input signals, and by using the obtained output signals to predict input signals, it provides a basis for accurately measuring transient vibration signals. In order to provide measurement capabilities and uncertainties beyond the single-value characteristic range specified in ISO 16063-13 and ISO 16063-22, the accelerometer calibration data in the aforementioned application fields should be evaluated and recorded according to the following methods.

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