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ADIS16488 accelerometer output

Question asked by tomali on Aug 5, 2015
Latest reply on Aug 16, 2015 by NevadaMark

Hello,

 

I  am wandering that which frame are the acceleromer output in? --body frame or navigation frame.

 

if the outputs are in body frame, why the order of the magnitude  x-axis and y-axis acceleration are different when the sensor is stationary (in the horizontal plane)? eg: x-axis acceleration is 10 times larger than y-axis acceleration outputs.

-0.00573129160000000-0.0259281964000000
-0.00533025320000000-0.0257531630000000
-0.00584131120000000-0.0260729738000000
-0.00536543800000000-0.0256216592000000
-0.00545940240000000-0.0257263596000000
-0.00578138480000000-0.0256300406000000
-0.00548227740000000-0.0255153240000000
-0.00572064100000000-0.0253796966000000
-0.00549617320000000-0.0255257550000000
-0.00572686300000000-0.0259810834000000
-0.00549735660000000-0.0255658320000000
-0.00533465740000000-0.0257844560000000
-0.00530826880000000-0.0255075770000000
-0.00589708960000000-0.0260025066000000
-0.00556960500000000-0.0260314206000000
-0.00507925040000000-0.0255770316000000
-0.00589755320000000-0.0259367242000000
-0.00511977880000000-0.0254415384000000

 

In addition, when I chang the sensor direction the accelerometer outputs in the horizontal plane, the order of the magnitude x-axis and y-axis acceleration will change? eg: the order of the magnitude is the same now.

-0.00705949340000000-0.00304020340000000
-0.00309944660000000-0.00237120420000000
-0.00379030820000000-0.00179788960000000
-0.00553870240000000-0.00129019880000000
-0.00610101260000000-0.00167313240000000
-0.00559937300000000-0.00147744440000000
-0.00619184160000000-0.00167177820000000
-0.00464489380000000-0.00235401440000000
-0.00770603240000000-0.00226349040000000
-0.00500149980000000-0.00342612600000000
-0.00463673200000000-0.00187793380000000
-0.00483354240000000-0.00305467260000000
-0.00501407800000000-0.00216375540000000
-0.00677356200000000-0.00428332240000000
-0.00636636260000000-0.00399403600000000
-0.00471795960000000-0.00234859760000000
-0.00280047340000000-0.00195942980000000

I am not sure why?

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