How to measure the distance traveled by a vehicle in Matlab

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Muhammed 2023-2-20

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评论： Muhammed 2023-2-21

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?

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Dyuman Joshi 2023-2-20

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

Muhammed 2023-2-21

Yes, I have these information.

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Answer 1

Matthieu 2023-2-20

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编辑：Matthieu 2023-2-20

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