How to measure the distance traveled by a vehicle in Matlab

I am working on electric vehicle software right now. I have all information of vehicle. How can I measure the distance traveled by the vehicle?

[Walter Roberson]

If all you have are initial positions together with acceleration readings, then you cannot reliably calculate distance travelled, even if the accelerations measure to 0.01g. However perhaps you have some additional measurements available?

[Muhammed]

I have radius of wheel , speed of vehicle , RPM , another information of motor.Vehicle haven't a specific location.I will show My total km in cluster of vehicle as the vehicle moves.

[Dyuman Joshi]

Do you have the information of time of travel? If yes, then you can calculate distance directly - circumference * rpm * time of travel.

[Muhammed]

Yes, I have these information.

Answer 1

[Matthieu]

You can use an onboard IMU (measures acceleration) and integrate to get the travel distance and trajectory. The drawback being it has drift due to error integration and is not absolute positioning, so it's bad on long distances.

You can use GPS whose measurements are absolute ; works best on long distances because of this.

Then, you can use odometry and measure the rotational speed of your wheels and calculate its traveled distance with travel time, but it is approximate due to circumference of wheel being variable with car weight, and rotation center on rubber heel being variable.

There are methods of estimation who couple all those information to get really precise measurements. Search IMU and GPS fusion in google and matlab documentation, and add odometry/replace IMU with odometry if your vehicle isn't equipped with an imu

Answer 2

[Image Analyst]

After m minutes, the vehicle will travel

distanceInMeters = 2 * pi * radiusOfTireInMeters * RPM * m

I think RPM needs to be a constant here.

[Walter Roberson]

If you have rpm measurements then you can estimate distance traveled, but if the readings are not frequent enough then error will accumulate.