Work Vehicle Route Control Using an Adjustable Field Margin
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Solution Overview
Problem
Existing control methods for work vehicles struggle to adapt to varying field conditions and working methods, leading to difficulties in optimizing the route for the work vehicle to travel on the working ground.
Innovation Solution
A control method that sets an allowable limit line based on a margin value inside the working ground, allowing the work vehicle to travel closer to the field outline, and generates a route for the work vehicle to follow based on this limit line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed safety margin is used to define the headland area, then the work vehicle can maintain a simple and safe distance from the field outline, but it cannot adapt to varying field conditions and working methods, reducing route optimization flexibility
Solution Approach 1:
The patent applies dynamics by making the safety margin adjustable rather than fixed. The control device allows the safety margin to be changed based on field conditions and working methods, enabling the route generation system to adapt dynamically. This resolves the contradiction by allowing the system to be versatile (different margin values for different conditions) while maintaining relatively simple implementation (the control device can adjust the margin parameter)
Solution Approach 2:
The patent applies parameter changes by modifying the safety margin parameter according to different field conditions and working methods. The control device changes the margin value to optimize the route, allowing the work vehicle to travel closer to the field outline when conditions permit. This resolves the contradiction by enabling adaptability through parameter adjustment while keeping the overall system structure simple
2Productivity
If the safety margin is reduced to allow the work vehicle to travel closer to the field outline, then route efficiency is improved, but the risk of protruding beyond the working ground increases
Solution Approach 1:
The patent applies dynamics by making the safety margin adjustable based on actual field conditions. When conditions allow, the margin is reduced to improve route efficiency; when conditions require caution, the margin is increased to maintain positioning reliability. This resolves the contradiction by allowing the system to dynamically balance efficiency and reliability rather than using a fixed conservative approach
Solution Approach 2:
The patent applies parameter changes by modifying the safety margin parameter to optimize the balance between route efficiency and positioning reliability. The control device adjusts this parameter based on field conditions, allowing the work vehicle to travel closer to the outline when appropriate while maintaining sufficient safety buffer when needed, thus resolving the contradiction between productivity and reliability
Data Source
AI summary
A control method for a work vehicle is a control method for a work vehicle capable of performing work while traveling on a working ground. This control method includes: setting a position of an allowable limit line that is defined by a margin value which is a distance to inside of the working ground, based on an outline of the working ground, and that is a limit position at which protrusion of the work vehicle is allowed; and generating a route for causing the work vehicle to travel on the basis of the allowable limit line.