Timeline for Instantaneous velocity calculation from accelerometer?
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 29, 2016 at 8:52 | vote | accept | Vinay | ||
| Jun 7, 2016 at 12:53 | comment | added | Chuck♦ | The accelerometer alone would generally be used when you only cared about short-term performance. The bias error (in velocity) is $v_{\mbox{err}} =\int a_{\mbox{bias}}dT$, which means, assuming a stable bias (it's not), the total drift is $v_{\mbox{err}} = a_{\mbox{bias}}(t_f - t_0)$. In the short term, the drift could be manageable, but the more time that elapses the less useful your measurements become. | |
| Jun 7, 2016 at 4:53 | comment | added | Vinay | Thanks Chuck for your detailed analysis. This is useful. Can you also please let me know where these accelerometer alone can be used? | |
| Jun 3, 2016 at 14:42 | history | edited | Chuck♦ | CC BY-SA 3.0 |
Symantec edit, but saying that an accelerometer is the opposite of GPS implies that it's accurate short-term and *noisy* long-term. It's actually not accurate long-term, not just noisy, as I comment about earlier in the answer.
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| Jun 2, 2016 at 15:24 | history | answered | Chuck♦ | CC BY-SA 3.0 |