Combine Turning Speed Control Near Field Edges
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional autonomous travel systems for work vehicles face inefficiencies when traveling near the edges of a work area, as they often stop to prevent going out of the field, leading to decreased work efficiency and increased time to restart autonomous travel.
Innovation Solution
An autonomous travel system that adjusts the vehicle speed of a work vehicle based on the distance from a reference point to the edge of the work area, setting a slower speed for routes where the vehicle is closer to the edge and a faster speed for routes further away, allowing continuous autonomous travel while preventing the vehicle from leaving the field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the work vehicle maintains a constant vehicle speed during autonomous travel, then the work efficiency is improved, but the work vehicle may go out of the field when traveling near edges
Solution Approach 1:
The patent applies dynamics by making the vehicle speed variable rather than constant. The control unit dynamically adjusts the vehicle speed based on the distance to the field edge, using a slower speed when near edges and a faster speed in safe zones, thus resolving the contradiction between maintaining high productivity and ensuring field boundary compliance.
Solution Approach 2:
The patent changes the parameter of vehicle speed based on the spatial parameter (distance to field edge). By adjusting the speed parameter according to the vehicle's position relative to the field boundary, the system achieves both efficient travel and safe boundary compliance.
2Reliability
If the work vehicle stops autonomously when near field edges to prevent going out, then the field boundary compliance is improved, but the work efficiency decreases due to unnecessary stops
Solution Approach 1:
Instead of a static stop-or-go decision, the system dynamically adjusts speed continuously based on real-time distance measurements to the field edge. This eliminates unnecessary complete stops while maintaining boundary compliance, thus improving productivity without sacrificing reliability.
Solution Approach 2:
The system changes the speed parameter dynamically rather than using binary stop/go control. By adjusting speed as a continuous variable based on distance to the edge, the system maintains reliability while avoiding the productivity loss associated with frequent stops.
3Reliability
If the work vehicle travels at a slower speed near field edges, then the field boundary compliance is improved, but the overall work efficiency decreases
Solution Approach 1:
The patent applies local quality by differentiating the speed control strategy based on location. The vehicle travels at slower speeds only in the local region near field edges where boundary compliance is critical, while maintaining faster speeds in other regions, thus minimizing the impact on overall work efficiency while ensuring reliability where needed.
Solution Approach 2:
The speed parameter is changed dynamically based on the vehicle's position relative to the field edge. By adjusting the speed parameter only when necessary (near edges) and maintaining higher speeds elsewhere, the system achieves boundary compliance without significantly reducing overall productivity.
Data Source
AI summary
A traveling processor causes a combine to perform an autonomous travel following a target route including a turning route in a field. An acquisition processor acquires a distance from a turning center point of the turning route to an edge of the field. A setting processor sets a speed of the combine on a turning route where the distance from the turning center point to the edge of the field is not more than a predetermined distance to a predetermined speed smaller than a speed of the combine on a turning route where the distance from the turning center point to the edge of the field exceeds the predetermined distance.