2
$\begingroup$

I am using an accelerometer to record the motion of a shake table (a rocking table) which moves forward and backward in one direction. The signal is very noisy and decided to use Extended Kalman Filter. What equation should i use for the model?

$\endgroup$
  • 1
    $\begingroup$ Why do you think you need an extended Kalman filter? What is non-linear about the motion? $\endgroup$ – Peter K. Jun 27 '13 at 17:00
  • $\begingroup$ since it is rocking table, i thought it is non linear. the displacement is described by x = a sin(wt) $\endgroup$ – ukg Jun 27 '13 at 17:06
  • 2
    $\begingroup$ To my way of thinking, that sine wave is the excitation (or input) of the system. It does not describe how the table reacts to stimulus. The reaction of the table to stimulus will be (approximately) linear, so the EKF is probably not needed. $\endgroup$ – Peter K. Jun 27 '13 at 18:11
  • $\begingroup$ i got the idea after reading the last part of this $\endgroup$ – ukg Jun 27 '13 at 18:36
  • $\begingroup$ this one also talks about sloshing, is it similar to the motion of the table? $\endgroup$ – ukg Jun 27 '13 at 18:49

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.