BMA 456 being crazy when is vibrating

[Velth]

Hi how are you ? I using the bma456 / bma-456 , to get the acceleration and calculate roll and pitch angles, is working fine now 0° is 0.3°// 8° is 7.7°, but the problem is when I put under a vibrator table in 0° is getting crazy the values goes to 9°/22°/16° etc, some coworkers said that i would need to use fourier to clean my signal.
But I'm not sure how I will do that. I want to know if theres something I cand do in the configuration of the bma-456, or some of you have another idea to clean my signal, i configured the filters in register acc_config 0x40, but doesn't change much

[BSTRobin]

Hello Velth,

Do you mean you only use accelerometer and calculate roll and pitch angles?

[Velth]

Hi BST, yes  I using the bma456  to get the acceleration   in register 0x12, then I use the formula below to get the angles 

roll = atan2(acc_y, acc_z) * 57.3; 

pitch = atan2((-acc_x), sqrt(acc_y * acc_y + acc_z * acc_z)) * 57.3; 

it's working fine the problem is when I put the sensor in some vibration system, like a table or a car (which is my goal) 

I using the sensor to see the inclination in trucks, but with the vibration of the motor, the sensor is getting crazy all angles are being randons 

[BSTRobin]

Hello Velth,

You need to use gyroscope with acceleration to calculate pitch and roll.