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静态加速度测量值与理论不服

Thread Summary

The user is experiencing discrepancies in the static acceleration measurements using the ADXL354C at 8g range, with calculated gravity values around 0.7g instead of 1g. The final answer suggests checking the power supply and environment, enabling the self-test function, and verifying the purchase channel. Accompanying answers indicate that the x and y axes also show similar inaccuracies, and the power supply voltage is confirmed to be 1.8V, with a measured sensitivity of 0.8V/g for all three ADXL354C units.
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Category: Hardware
Product Number: ADXL354

用ADXL354C的8g量程测量时,将其z轴朝上水平放置时,x、y、z轴测得的静态加速度分别为

1.0651  1.0637  0.9906 

,z轴相对电压为0.07左右,用官方手册中的灵敏度0.1V/g计算的重力加速度为0.7g,这与1g相差胜远,请问是什么原因?

Parents Reply
  • z-轴朝下时三个轴的输出为:

    1.0662  1.0645  1.1428 

    z+轴朝下时三个轴的输出为:

    1.0651  1.0638  0.9906 

    x-轴朝下时三个轴的输出为:

    1.1444  1.0640  1.0661 

    x+轴朝下时三个轴的输出为:

    0.9869  1.0636  1.0675 

    y-轴朝下时三个轴的输出为:

    1.0655  1.1429  1.0666 

    y+轴朝下时三个轴的输出为:

    1.0657  0.9854  1.0672 

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