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Path planning in big map, problem with global costmap

Hello Guys,

I am working with a differential drive robot with a sick laser scanner. When it is driving inmy room it doesnt have any problems, the room ist >7meters but when I am sending it out on the hallway which is pretty huge he has problems with the end he cant see. The global costmap closes him the ways in both ends and he cant move more than the range of the laser scanner.

I dont know which option I have to tune to avoid this, right now I am using base_local_planner but maybe I am going to switch to DWA, which would u recommend?