Thread: ANNOUNCING: navX MXP Robotics Navigation Sensor
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Unread 03-01-2015, 01:15
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AKA: Scott Libert
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Re: ANNOUNCING: navX MXP Robotics Navigation Sensor
Quote:
Originally Posted by PeterBrock View Post
The AHRS capability is very useful for field oriented driving.

Have you tried using the navX (or the nav6) for pose information? It would be useful to track robot position during the match.
If you mean using gravity-corrected linear acceleration to estimate current x,y position, the classic response is that double-integration of acceleration to derive first motion vectors and then a track from 0,0 would work for a short period of time but errors would grow quickly. We haven't tried this, but I think determining the error rate would be a very good idea.

I'm of the opinion that navX MXP plus scanning LIDAR is an elegant approach for localization. And low cost products like the LIDAR Lite are emerging that make it affordable for FRC teams to have long-range time-of-flight ranging. Based on that thinking, fusing a IR LED-based scanning LIDAR with navX MXP's heading and linear acceleration measures is the direction we're heading.
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