Agricultural Tractor Steering Adaptation via Dynamic Parameter Sets
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Solution Overview
Problem
Conventional steering systems for agricultural tractors lack the ability to optimize steering performance and accuracy across various working conditions, leading to decreased precision and stability, especially during high-speed operations and specific tasks like fieldwork or maneuvering in confined spaces.
Innovation Solution
A method that adapts the steering characteristics of an agricultural tractor by selecting from predefined parameter sets based on detected working conditions, using a control unit to adjust the steering transmission ratio, operating force, and steering-limiting end stops to enhance steering precision and stability, with options for manual or automatic activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the steering transmission ratio is adapted based on instantaneous travel speed to maintain stable driving behavior at high speeds, then driving stability is improved, but steering accuracy deteriorates
Solution Approach 1:
The steering transmission ratio is made dynamically adjustable based on detected working conditions rather than being fixed. The control unit continuously adapts the steering characteristic to match the current operational state, allowing optimal performance across varying speeds and conditions without compromising either stability or accuracy
Solution Approach 2:
The system changes the steering transmission ratio parameter based on detected working conditions. By modifying this critical parameter dynamically, the system achieves stable driving behavior at high speeds while maintaining steering accuracy through appropriate parameter selection for different operational contexts
2Device complexity
If a fixed steering transmission ratio is used for all working conditions, then device complexity is reduced, but adaptability to different working conditions deteriorates
Solution Approach 1:
The steering system transitions from a static fixed transmission ratio to a dynamic adjustable system. The control unit continuously monitors working conditions and automatically adjusts the transmission ratio, providing adaptability across different operational states while keeping the overall system structure relatively simple
Solution Approach 2:
The system automatically detects working conditions and selects appropriate parameter sets without requiring manual driver input. The control unit autonomously manages the steering characteristic adaptation, eliminating the need for complex manual control interfaces while maintaining high adaptability
3Device complexity
If limited speed selections are provided for various working conditions, then device complexity is reduced, but steering accuracy deteriorates
Solution Approach 1:
Instead of providing discrete limited speed selections, the system implements continuous dynamic adjustment of the steering transmission ratio based on detected working conditions. This allows for precise steering accuracy across the full range of operating speeds without requiring complex discrete control mechanisms
Data Source
AI summary
A method for influencing the steering characteristics of an agricultural tractor is disclosed. The method comprises associating a steering characteristic with a respective parameter set of a plurality of predetermined parameter sets. Detecting an instantaneous working condition of the agricultural tractor by a control unit. Selecting a parameter set from the plurality of predetermined parameter sets based on the detected instantaneous working condition; and activating an actuating device based on the selected parameter set to adapt a steering characteristic to the detected instantaneous working condition.