Register to reply

Acceleration to Velocity by area integration

by likephysics
Tags: acceleration, integration, velocity
Share this thread:
likephysics
#1
Apr25-14, 01:26 AM
P: 615
I know this has been asked many times.
I am integrating acceleration data from MEMS accelerometer to get velocity.

I found an app note by freescale - http://cache.freescale.com/files/sen...ote/AN3397.pdf

It ignores the sampling time to calculate the area.
The formula should be sample: Vx= V(x-1)+[N-(N-1) * T]. Right?
But the app note it is -
Vx = V(x-1)+N+[((N-(N-1))/2]

V(x-1) is the previous integration result.
Phys.Org News Partner Engineering news on Phys.org
An innovative system anticipates driver fatigue in the vehicle to prevent accidents
Squink personal factory aims to make circuit prototyping easy
Catching grease to cut grill pollution
Simon Bridge
#2
Apr25-14, 03:35 AM
Homework
Sci Advisor
HW Helper
Thanks ∞
Simon Bridge's Avatar
P: 12,386
It ignores the sampling time to calculate the area.
... you still have to multiply by time somewhere.

N+[((N-(N-1))/2]
... nonsense: did you misplace a parenthesis?

N+[((N-(N-1))/2]=N+1/2


Register to reply

Related Discussions
Area of a circle by integration Calculus & Beyond Homework 24
Integration. About -ve area and stationary value. Calculus & Beyond Homework 1
Acceleration on a Rollercoaster (And Integration to Velocity) General Physics 3
Integration and Computing Area Calculus & Beyond Homework 3