Header Floatation Control for Windrower Ground Force
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Solution Overview
Problem
Current agricultural machine systems, particularly self-propelled windrowers with mower-conditioner machines, lack an efficient method for automatically setting and adjusting header flotation pressure, leading to potential operator errors and inconsistent ground force maintenance due to varying header weights and crop/soil accumulation.
Innovation Solution
A control system that includes sensors and a controller to determine the header weight and calculate the proper flotation pressure based on internal lift cylinder pressure, allowing for automatic setting and adjustment of flotation pressure to maintain a constant ground force, eliminating the need for manual operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual setting of header flotation pressure is used, then device complexity is reduced, but manufacturing precision and operational reliability deteriorate due to operator errors and inconsistent ground force maintenance
Solution Approach 1:
The system automatically determines header weight and calculates proper flotation pressure settings without operator intervention. The control system self-adjusts the flotation pressure based on sensed header weight data, eliminating manual setting operations while maintaining precise ground force consistency throughout the header weight range.
Solution Approach 2:
The system uses sensors to detect header weight and provides feedback to the control system, which then adjusts flotation pressure accordingly. This closed-loop feedback mechanism ensures continuous maintenance of optimal ground force despite variations in header weight, achieving high precision without requiring complex manual adjustment mechanisms.
2Reliability
If automatic control system is implemented, then operational reliability improves, but device complexity increases due to additional sensors and control mechanisms
Solution Approach 1:
The control system integrates multiple functions into a single unified system: it senses header weight, determines weight values, calculates flotation pressure settings, and controls hydraulic actuators. This multi-functional approach achieves high reliability through consistent ground force maintenance while avoiding the complexity of separate dedicated systems for each function.
Solution Approach 2:
The system replaces manual mechanical adjustment mechanisms with electronic sensing and control. Instead of operators physically adjusting flotation pressure manually, the system uses sensors to detect header weight and electronically controls hydraulic actuators to maintain proper ground force, improving reliability while keeping the mechanical structure relatively simple.
3Productivity
If flotation pressure is not adjusted for varying header weight, then device complexity remains low, but productivity deteriorates due to inconsistent harvesting quality
Solution Approach 1:
The system dynamically adjusts flotation pressure based on real-time header weight conditions. As header weight varies during operation due to crop accumulation, the control system continuously modifies the flotation pressure setting to maintain optimal ground force, ensuring consistent harvesting quality and high productivity without requiring a completely complex control architecture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables precise and automatic adjustment of header flotation pressure, ensuring consistent ground force and reducing operator errors, while accommodating changes in header weight due to crop and soil accumulation, thereby improving operational efficiency and accuracy.
Implementation Method 1
sensors and a controller to determine the header weight and calculate the proper flotation pressure based on internal lift cylinder pressure
Data Source
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AI summary
An agricultural machine system (135) includes an agricultural work vehicle (100), an agricultural work machine (101), and a control system (129) operatively coupled with the agricultural work vehicle (100) and the agricultural work machine (101). The control system (129) includes a sensor (241, 556) configured for sensing an operative parameter and outputting an operative parameter signal corresponding to the operative parameter. A controller system (129) is configured for receiving the operative parameter signal and determining, based at least in part on the operative parameter signal, a floatation pressure for an on-ground floatation of the agricultural work machine (101).