Agricultural Machine Tractive Force Control via Implement Depth Adjustment
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Solution Overview
Problem
Agricultural working machines, such as tractors, face inefficiencies during field tillage due to excessive slip and varying soil conditions, which affect traction and operational efficiency.
Innovation Solution
The implementation of a system that automatically controls the tractive force exerted by attachments on the working machine by adjusting operating parameters like ground engagement depth and torque transmission, using sensors to maintain optimal machine parameters within specified ranges, thereby improving traction and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the implement operates at fixed depth without automatic control, then the structure is simple, but excessive slip occurs and traction efficiency deteriorates
Solution Approach 1:
The system automatically adjusts the implement depth parameter based on detected slip conditions and soil resistance, changing the operating parameter to maintain optimal traction efficiency and prevent excessive slip
Solution Approach 2:
The control system continuously monitors machine parameters such as slip rate and tractive force, compares them with target values, and automatically adjusts implement depth to maintain optimal operating conditions, creating a closed-loop feedback control system
2Productivity
If the implement depth is increased to improve tillage effectiveness, then productivity improves, but tractive force increases causing excessive slip
Solution Approach 1:
The system monitors slip rate and tractive force in real-time, and when excessive slip is detected, automatically reduces implement depth to eliminate the harmful effect while maintaining acceptable tillage effectiveness
Solution Approach 2:
The implement depth is made dynamically adjustable rather than fixed, allowing the system to optimize the balance between tillage effectiveness and slip prevention by continuously adapting depth to current soil conditions and machine performance
3Productivity
If manual control of implement depth is used, then the system is simple to operate, but operator attention is constantly required reducing efficiency
Solution Approach 1:
The control system automatically monitors machine parameters and adjusts implement depth without operator intervention, making the system self-regulating and eliminating the need for constant manual attention while maintaining optimal performance
Solution Approach 2:
The system uses feedback from sensors monitoring slip and tractive force to automatically control implement depth, replacing manual operator control with an automated closed-loop system that maintains optimal operation without constant attention
Data Source
Figure 1
Figure 2
AI summary
The present invention relates to an agricultural machine (1) with ground engagement means (2, 3) arranged on at least one driven axle (4, 5) for transmitting a torque and at least one connection device (8) to which an attachment (9) operated by the machine (1) is connected, the working position of which is height-adjustable, wherein by changing at least one operating parameter of the attachment (9) a tractive force exerted by the attachment (9) on the machine (1) can be controlled or regulated as a function of at least one machine parameter of the machine (1) such that at least one machine parameter lies within a predefinable range.