Tohoku University Technology: Way to innovate rough terrain movement: T23-098

Simultaneously plan route to destination and modified terrain Contributing to backhoe automation for safe construction

Since the transportation network of goods is cut off when the road is cut off by the landslide disaster, it is indispensable to secure the passage of vehicles by improving the temporary road in the disaster site for quick recovery. The temporary road is constructed by the excavation operation of the backhoe, but the operation is accompanied by the risk of the secondary damage, so the automation technology of the backhoe is required. In the conventional research, the motion planning to change the level difference to the roadable slope was carried out, and the modification work using the simulator was successful. However, to move to the destination in the remote place, the route to the destination and the excavation work must be planned simultaneously, and the simultaneous planning has not been achieved. This invention proposes a method to simultaneously carry out the excavation planning of the rough ground and the route planning to the destination. The excavation is realized by fitting the roadable slope in the footprint of each point on the route, and adjusting the amount of cut soil and embankment of the slope to be equal. By adding the cost of excavation and movement to the planning problem by the A* method, and deriving the solution to minimize the cost, the modified terrain and the moving route are calculated simultaneously. It is also possible to flexibly adjust the guide of the route and the excavation plan by changing the weighting of each cost.

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