Automatic Work Vehicle Path Planning by Driving Mode and Turning Radius
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Solution Overview
Problem
Existing automatic travel systems for work vehicles fail to generate target travel paths that account for the specific travel driving mode, leading to inefficiencies in turning radius and work path distance, reducing overall work efficiency.
Innovation Solution
An automatic travel system that includes a travel driving mode selection unit, travel path generation unit, and automatic travel control unit, which generate and control travel paths based on the selected driving mode, ensuring proper turning radii and efficient path lengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a connection path is generated with an assumption that the travel driving mode is four-wheel travel driving mode, then a sufficient turning radius is secured for making the work vehicle perform turning traveling, but the headland becomes large and the distance of the work path becomes short
Solution Approach 1:
The system dynamically adjusts the turning radius parameter in the connection path generation based on the selected travel driving mode. When two-wheel travel driving mode is selected, a smaller turning radius is used, while four-wheel travel driving mode uses a larger turning radius. This dynamic parameter adjustment resolves the contradiction by optimizing both turning capability and work path efficiency according to the actual driving mode.
Solution Approach 2:
The invention changes the turning radius parameter according to the travel driving mode selection. The travel path generation unit receives the selected driving mode information and generates connection paths with appropriate turning radii - smaller for two-wheel mode and larger for four-wheel mode. This parameter change approach directly addresses the contradiction between sufficient turning radius and work path distance optimization.
2Productivity
If a connection path is generated with an assumption that the travel driving mode is two-wheel travel driving mode, then the headland can be smaller and the distance of work paths can be longer, but a sufficient turning radius is not secured for making the work vehicle perform turning traveling in four-wheel travel driving mode
Solution Approach 1:
The system dynamically adjusts the turning radius parameter in the connection path generation based on the selected travel driving mode. When four-wheel travel driving mode is selected, a larger turning radius is used to ensure sufficient turning capability, while two-wheel travel driving mode uses a smaller turning radius to optimize work path distance. This dynamic parameter adjustment resolves the contradiction by optimizing both turning capability and work path efficiency according to the actual driving mode.
Solution Approach 2:
The invention changes the turning radius parameter according to the travel driving mode selection. The travel path generation unit receives the selected driving mode information and generates connection paths with appropriate turning radii - larger for four-wheel mode and smaller for two-wheel mode. This parameter change approach directly addresses the contradiction between work path optimization and sufficient turning radius for different driving modes.
3Device complexity
If the target travel path is generated without considering the travel driving mode, then the system complexity is reduced, but the work efficiency is reduced due to mismatched turning radii and path distances
Solution Approach 1:
The travel path generation unit is designed with multi-functionality to handle different travel driving modes. It can generate connection paths with different turning radii based on the selected mode (two-wheel or four-wheel), making the system universally applicable to various driving configurations. This multi-functional design resolves the contradiction by maintaining system simplicity while adapting to different operational requirements.
Solution Approach 2:
The invention introduces parameter changes based on the selected travel driving mode. The turning radius parameter is adjusted according to whether two-wheel or four-wheel mode is selected, allowing the same path generation system to optimize for different driving configurations. This parameter adaptation resolves the contradiction between system simplicity and work efficiency by maintaining a unified system structure that can dynamically adjust its operational parameters.
Data Source
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AI summary
The present invention is capable of generating a target travel path that is in accordance with a travel driving mode, improves work efficiency, and causes a work vehicle to automatically travel while turning at an appropriate turning radius that is in accordance with the travel driving mode. The present invention comprises: a travel driving mode selection unit (56) that is capable of selecting one travel driving mode, from among a plurality of travel driving modes, as a travel driving mode for a work vehicle; a travel path generation unit (53) that generates a target travel path by using a turning radius corresponding to the travel driving mode selected by the travel driving mode selection unit (56); and an automatic travel control unit (18) that performs automatic travel control wherein a work vehicle (1) is made to automatically travel, on the basis of positioning information for the work vehicle (1) and obtained by a satellite positioning system, along the target travel path generated by the travel path generation unit (53).