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This isn't possible.
The minimum and maximum limits are specified in the cfg, and you'll have to modify the cfg to change them.
That said, your proposed changes are a bit absurd; 20 m/s is already VERY fast for the average robot ( 45 miles/hour or 72 kilometers/hour), and a negative minimum velocity doesn't make sense in this context.
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This isn't possible.
The minimum and maximum limits are specified in the cfg, and you'll have to modify the cfg to change them.
That said, your proposed changes are a bit absurd; 20 m/s is already VERY fast for the average robot ( 45 miles/hour or 72 kilometers/hour), and a negative minimum velocity doesn't make sense in this context.context, because min_vel_x is meant as the minimum velocity required to make the robot move.
If your local planner doesn't plan backwards when it should, you may need to adjust the other planner parameters or switch planners.
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