Accelerometer performance parameter detection method and accelerometer performance parameter detection system

Abstract

The invention discloses an accelerometer performance parameter detection method and an accelerometer performance parameter detection system. The method includes: when a follow-up table on a linear acceleration simulation rotary table is located at a zero position, enabling output acceleration of the linear acceleration simulation rotary table to be multiple preset acceleration values, and obtaining output values of an accelerometer fixed on the follow-up table; after the follow-up table on the linear acceleration simulation rotary table rotates by 180 degrees relative to the zero position, enabling output acceleration of the linear acceleration simulation rotary table to be multiple preset acceleration values, and obtaining output values of the accelerometer fixed on the follow-up table; obtaining mounting position errors and corresponding performance parameters of the accelerometer on the linear acceleration simulation rotary table according to formulas, so that the performance parameters of the calibrated accelerometer can be corrected. By the method and the system, working radius error influences of the accelerometer can be eliminated, calibration precision is improved, and mounting requirements on the accelerometer during calibration are lowered.

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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