what means these information about offset

By rungun , 12 January 2012

I am use ATAVRBIN2 (IMU3000+ KXTF9+HMC5883) for 6 axis fusion.

With Python demo, i find when it have an accurate calibration, the drift in yaw axis is very small. But for the displayed information, how can I find the offset of gyroscpe and accelerometer? And what is the Units of gb and gts?

Thanks in advance.


I/uMPL-main:gb: -5.71 -4.64 -1.71
I/uMPL-main:gts: +0.00 +0.00 +0.00
I/uMPL-main:Q: +0.5046 +0.0051 +0.0120 -0.8633 (+1.0000)
I/uMPL-main:GC: +0.00 +0.00 +0.06
I/uMPL-main:AC: -0.02 -0.02 +0.97
I/uMPL-main:T: +23.62
I/uMPL-main:gb: -5.71 -4.64 -1.71
I/uMPL-main:gts: +0.00 +0.00 +0.00
I/MPL-mldl:inv_set_offset(00bb, 0099, 0038); from 00bb, 0098 0038
I/uMPL-main:Q: +0.5210 +0.0017 +0.0133 -0.8535 (+1.0000)
I/uMPL-main:GC: -0.18 -0.37 +0.00
I/uMPL-main:AC: -0.02 -0.02 +0.98
I/uMPL-main:T: +23.61
I/uMPL-main:gb: -5.71 -4.67 -1.71
I/uMPL-main:gts: +0.00 +0.00 +0.00
I/umpl-setup:umplMotionCallback: INV_MOTION
I/MPL-mldl:inv_set_offset(00ba, 0098, 0038); from 00bb, 0099 0038
I/MPL-mldl:inv_set_offset(00ba, 0098, 0038); from 00ba, 0098 0038
I/MPL-mldl:inv_set_offset(00ba, 0098, 0038); from 00ba, 0098 0038
I/MPL-mldl:inv_set_offset(00ba, 0098, 0038); from 00ba, 0098 0038

jims_li

14 years 2 months ago

gb refers to the gyro bias or offset.
We do not compute the accelerometer offset. You need modify the code to compute the accelerometer offset.
gc refers to the raw gyro data.
The functions gb and gc are rexplained in the software version 2.0. Please let us know if you are using this version

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