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I'm employing the Smac Hybrid-A* Planner along with the Model Predictive Path Integral Controller for point-to-point navigation of a forklift, both indoors and outdoors. Notably, this forklift features a differential drive mechanism with two front wheels and an independently rotating rear wheel, mirroring a tricycle's kinematics. Additionally, I've opted for the "reeds shepp" method, addressing scenarios where in-place rotations aren't feasible.

Can I develop a custom motion model compatible with both the smac-planner and mppi-controller?

Any advice or guidelines on navigating these challenges would be greatly appreciated.

Thank you.

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This is simply a differential drive robot; you may simply use the differential drive motion model. The asymmetry is of no real concern to MPPI/Smac, just make sure you provide the appropriate footprint.

I don't know if there's some additional subtlety or problems you're hinting at needing that this doesn't provide, but that seems like the obvious solution :-)

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  • $\begingroup$ Thanks for the rapid feedback.I was primarily considering confined spaces, such as inside a container. But now that I think of it, perhaps the Smac planner addresses this. $\endgroup$
    – Ravi
    Sep 21 at 6:56
  • $\begingroup$ Great! Can you mark this as the answer to remove from unanswered questions queue? $\endgroup$
    – Steve Macenski
    Sep 21 at 16:38

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