Method and system for detecting performance parameters of accelerometers

Abstract

The invention discloses a method and a system for detecting performance parameters of an accelerometer. The method includes: when the follower platform on the linear acceleration simulation turntable is positioned at zero position, the output acceleration of the linear acceleration simulation turntable is a preset multiple Acceleration value, obtain the output value of the accelerometer fixed on the described follow-up table; After the follow-up table on the line acceleration simulation turntable rotates 180 degrees relative to zero, the output acceleration of the line acceleration simulation turntable is described preset A plurality of acceleration values ​​is obtained to obtain the output value of the accelerometer fixed on the moving table; the installation position error and the corresponding performance parameters of the accelerometer on the linear acceleration simulation turntable are obtained according to the formula, and the calibrated Correction of accelerometer performance parameters. By implementing the method and system of the invention, the influence of the working radius error of the accelerometer can be eliminated, the calibration accuracy can be improved, and the installation requirements for the accelerometer can be reduced during the calibration process.

Description

technical field [0001] The invention relates to the technical field of accelerometers, in particular to a method and system for detecting performance parameters of an accelerometer. Background technique [0002] Accelerometers are widely used in vibration detection, motion recognition, status recording, and automotive airbags. In the development, production and use of the accelerometer, the performance of the accelerometer needs to be calibrated. [0003] The linear acceleration simulation turntable can be used to calibrate the performance index of the accelerometer, but there will be factors that affect the calibration accuracy during calibration, such as: installation error, rotational speed, and dynamic radius. Among them, the influence of rotational speed and dynamic radius is mainly considered in the design and manufacturing stages of the online acceleration simulation turntable, and relevant measures are taken to correct it. When the accelerometer is installed on the...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned installation method is difficult to avoid installation errors, and because the shapes and sizes of various types of accelerometers vary greatly, most of the installation fixtures need to be customized according to the specific shape and size of the accelerometer, and accelerometers of different shapes and sizes are installed Different working radius errors may occur when

Therefore, after the test is completed, there are large errors in the related performance indicators of the accelerometer obtained directly through data fitting or other methods without considering the error term, which will greatly reduce the accuracy of the indicator test

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