problem with acceleration amplitude in IIS2DH
Hello
We tested the IIS2DH sensor on a shaker.
Accelerometer Settings:
- ODR = 5376
- Full-scale = +/- 16g
- Low-power mode.
- High-pass filter bypassed
Shaker Settings:
- frequency 1 kHz
- acceleration amplitude 13.592 g
As a result, the accelerometer registered an acceleration amplitude of 2 g less than the real one.
What could be the problem? we wanted to repeat the result of the experiment presented at https://www.st.com/content/ccc/resource/technical/document/white_paper/group0/c0/30/46/2f/00/24/42/1c/Capacitive_MEMS_accelerometer_for_condition_monitoring/files/MEMS_Condition_monitoring.pdf/jcr:content/translations/en.MEMS_Condition_monitoring.pdf
experimental data example:
raw acceleration(g)
-14336 -10.18997505
-10752 -7.384129908
7424 6.845513329
12800 11.05428105
1536 2.23591059
-12544 -8.787052481
-15360 -10.9916451
1792 2.436328101
11008 9.651358475
9216 8.248435902
-9216 -6.181624846
-15360 -10.9916451
-6656 -4.177449742
9216 8.248435902
12544 10.85386354
-3072 -1.371604597
-13568 -9.588722522
-13568 -9.588722522
5120 5.041755736
12032 10.45302852
5376 5.242173246
-11264 -7.784964929
-15872 -11.39248012
-2048 -0.569934555
10240 9.050105943
11520 10.0521935
-6656 -4.177449742
-14592 -10.39039256
-10240 -6.983294887
7680 7.04593084
12800 11.05428105
768 1.634658059
-12800 -8.987469991
-15360 -10.9916451
2304 2.837163121
11008 9.651358475
8704 7.847600881
-9728 -6.582459867
-15616 -11.19206261