Work Machine Control Using Stacking Volume for Lift-Up Planning
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Solution Overview
Problem
The challenge in efficiently filling a stockyard with materials like earth, sand, or rock involves determining the necessary region for lift-up operations, which is not adequately addressed by existing technologies.
Innovation Solution
A system and method for a work machine, such as a wheel loader, that calculates the stacking volume and determines a lifted-up region based on this volume, enabling precise prediction of the region needed for lift-up operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the region for lift-up operations is not properly determined, then the stockyard filling efficiency is reduced, but the existing technology does not provide adequate method for determining the necessary region
Solution Approach 1:
The controller calculates the stacking volume and determines the lifted-up region before the lift-up operation begins. This preliminary determination of the necessary region allows the operation to proceed efficiently without delays caused by on-the-fly decision-making or inadequate region assessment.
Solution Approach 2:
The system uses a computational model to create a virtual representation of the stacking volume and lifted-up region. By calculating these parameters in advance, the system generates a plan that guides the actual lift-up operation, effectively copying the desired outcome into a actionable region determination.
2Measurement precision
If the stacking volume is calculated accurately to determine the lifted-up region, then the region prediction becomes appropriate, but this requires additional calculation steps
Solution Approach 1:
The controller automatically performs the stacking volume calculation and lifted-up region determination without requiring external intervention or complex external systems. The work machine's own controller utilizes available operational data to compute these parameters, making the system self-sufficient and avoiding additional complex equipment.
Solution Approach 2:
The controller serves multiple functions: it not only controls the basic operation of the work machine but also calculates stacking volume, determines lifted-up regions, and guides the lift-up operation. This multi-functionality consolidates what could be separate complex systems into a single integrated controller.
Data Source
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AI summary
A region necessary for lifting up is appropriately determined. The lift-up work is a work of ascending a slope formed by material and stacking the material on an upper portion of the slope. The system includes a work machine main body including a travel body, a work implement attached to the work machine main body and including a bucket, and a controller that commands operation of the travel body and the work implement. The controller calculates a stacking volume that is a volume of the material stacked on an upper portion of the slope by the lift-up work, and determines a lifted-up region (V2) on the basis of the stacking volume.