Trailer-Mounted Traction Control for Tractor Slip
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Solution Overview
Problem
Existing systems for controlling traction in tractor-trailer combinations, such as agricultural sprayers, rely on manual or imprecise measures to address drive slip, leading to deviations in desired driving speed and reduced traction efficiency.
Innovation Solution
A system with a control unit on the trailer vehicle that autonomously determines and compares drive speed and ground speed, initiating traction-enhancing measures, such as adjusting load and working depth, when a predefined threshold is exceeded, using sensors like radar, ultrasonic, or GPS, to maintain optimal traction independently of the farmer or tractor type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual or imprecise measures are used to address drive slip, then the system structure remains simple, but the driving speed accuracy and traction efficiency deteriorate
Solution Approach 1:
The patent introduces a control unit as an intermediary device that coordinates between the tractor and trailer vehicle. This control unit receives speed data from both vehicles, compares them to detect slip conditions, and automatically initiates traction-enhancing measures. By placing the control intelligence in a separate intermediary unit rather than embedding complex systems in the tractor itself, the solution achieves precise speed measurement and automatic response while keeping the overall system structure manageable and adaptable to different tractor types.
2Extent of automation
If the farmer manually recognizes and initiates traction-enhancing measures, then the system remains simple, but the response precision and timeliness deteriorate
Solution Approach 1:
The system enables automatic self-service traction control where the control unit autonomously monitors speed data from both tractor and trailer, detects slip conditions by comparing speeds, and initiates traction-enhancing measures without farmer intervention. The control unit serves itself by having direct access to speed data from both vehicles and the authority to command traction adjustments, eliminating the need for manual recognition and response while maintaining relatively simple system architecture.
3Extent of automation
If traction-enhancing measures are initiated by the tractor itself, then the response is automated, but the system requires complex control options installed on the tractor
Solution Approach 1:
The patent segments the traction control function into a separate control unit that operates independently from the tractor's native control systems. This segmentation allows the control unit to communicate with various tractor types through standardized interfaces without requiring complex integration with each tractor's proprietary control architecture. The control unit receives speed data from the tractor and issues traction commands, maintaining automatic response capability while enhancing versatility across different tractor models and manufacturers.
Data Source
Figure 1
AI summary
System for the automatic control of traction enhancement for a tractor pulling a trailer, in particular a field sprayer, comprising: a control unit provided on the trailer; means for determining the drive speed of one or more drive wheels of the tractor and for transmitting the drive speed to the control unit; means for determining the ground speed and for transmitting the ground speed to the control unit; wherein the control unit is configured to compare the transmitted drive speed and the transmitted ground speed and, on the basis of the comparison, to initiate traction-enhancing measures if the difference between the drive speed and the ground speed exceeds a predefined threshold.