Header Profile Control for Non-Harvesting Mode Transitions
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Solution Overview
Problem
Agricultural harvesters face challenges in efficiently transitioning between harvesting and non-harvesting modes, particularly in maintaining optimal header positioning to avoid crop damage and ensure effective harvesting while following field contours.
Innovation Solution
The implementation of a controller system that allows for the setting and storage of specific header profiles, enabling the agricultural system to automatically adjust its position and orientation based on user inputs or pre-programmed instructions, ensuring the header is positioned correctly for both harvesting and non-harvesting modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the header position is manually adjusted during mode transitions, then the system complexity is reduced, but the harvesting efficiency and accuracy deteriorate due to improper header positioning
Solution Approach 1:
The header positioning system automatically adjusts the header position and orientation based on the operational mode (harvesting or non-harvesting) without requiring manual intervention. The controller receives mode selection input and autonomously commands the header to transition to the appropriate profile, eliminating the need for manual adjustment while maintaining optimal positioning for harvesting efficiency.
Solution Approach 2:
The header positioning system dynamically adapts its configuration based on operational requirements. The controller stores multiple profiles (harvesting mode with lower position for following field contours, non-harvesting mode with elevated position) and automatically switches between them based on mode selection, enabling the system to optimize its structural configuration for different operational states.
2Ease of operation
If the header remains in a fixed position during mode transitions, then the ease of operation is improved, but crop damage increases due to improper header positioning
Solution Approach 1:
The system automatically adjusts the header position based on the selected operational mode, eliminating the need for manual intervention while preventing crop damage. When non-harvesting mode is selected, the controller autonomously elevates the header to a safe position that prevents contact with standing crops, thereby avoiding crop damage while maintaining ease of operation.
Solution Approach 2:
The controller stores pre-configured header profiles for different operational modes. Before transitioning between modes, the system retrieves and applies the appropriate profile in advance, ensuring the header is positioned correctly before the mode change is complete. This preliminary positioning action prevents improper header-crop contact and avoids crop damage during mode transitions.
3Manufacturing precision
If automatic header positioning is implemented, then the harvesting accuracy is improved, but the device complexity increases due to additional control systems
Solution Approach 1:
The system uses a dynamic profile selection approach where the controller stores multiple pre-defined header position profiles and automatically selects the appropriate profile based on operational mode. This dynamic switching mechanism achieves precise header positioning for both harvesting and non-harvesting modes while avoiding the need for complex real-time calculation and control systems, thereby maintaining positioning accuracy without excessive complexity.
4Object-affected harmful factors
If the header is elevated during non-harvesting mode, then crop damage is reduced, but the ability to follow field contours deteriorates
Solution Approach 1:
The header positioning system dynamically adjusts its configuration based on operational mode. During non-harvesting mode, the header is elevated to a safe position that prevents crop damage. During harvesting mode, the system automatically transitions to a lower profile that enables the header to follow field contours and maintain optimal cutting height. This dynamic adaptation resolves the contradiction by applying different positioning strategies for different operational states.
Solution Approach 2:
The controller stores pre-configured profiles that define the appropriate header position for each operational mode. Before transitioning between modes, the system retrieves and applies the corresponding profile in advance, ensuring the header is positioned correctly for the upcoming operation. This preliminary positioning ensures the header is elevated to prevent crop damage during non-harvesting mode while maintaining the capability to follow contours when harvesting mode is activated.
Data Source
AI summary
An agricultural system includes a header and a controller. The controller is configured to receive a first input indicative of a set profile of the header, in which the set profile comprises a target position of the header for a non-harvesting mode, store the set profile of the header. The controller is further configured to receive a second input indicative of a selection of the non-harvesting mode, output a first signal to instruct the agricultural system to operate in the non-harvesting mode in response to receiving the second input, and output a second signal to set a current position of the header based on the set profile in response to receiving the second input.