At a high level is ODrive the right controller for my application?
I’m building a 300kg Autonomous Ground Vehicle with a dual wheel traction drive. 48V pack. According to our calcs it needs on the order of 500watts (approx 10 amps) per wheel to cruise on level ground at 3 m/sec, and peak power requirements (2 m/sec up a 20 degree incline) are on the order of 1.5kw (30 or so amps) per wheel. Plus or minus. The autopilot is ardurover on pixhawk hardware (so, R/C PPM output commanding velocity; we plan on running the ODrive in velocity mode with external encoders).
We’re in the process of selecting BLDC motors with KV on the order of 75-80, so, max motor RPM in the 3500 range. Motors will drive a 1:25 reduction gear for output (wheel) RPM around 140rpm.
It seems from the specs including the temperature stress test here that the ODrive should have sufficient power capabilities for this application. And the ODrive velocity mode seems to support our autopilot and application.
Yet on the Projects discussion I found no projects that use the ODrive for vehicles of this mass.
Is there something I’m missing here? I realize there’s no 100% right or wrong answer but I’m interested in whatever thoughts group members (or @Wetmelon ) might share.