Swath Tracking System Blending Paths for Off-Road Vehicle Guidance
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Solution Overview
Problem
Off-road vehicles, such as agricultural tractors, often diverge from planned paths due to operator inputs, geographical features, or changes in field conditions, leading to inefficiencies in agricultural operations.
Innovation Solution
A swath tracking system that includes a control system with a processor and memory to receive vehicle location points and current state data, generating a planned path and correction path, blending control signals based on heading error and distance to guide the vehicle back to the planned path, utilizing a steering control system and speed control system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual guidance is used by an operator, then the vehicle can adapt to field conditions and operator inputs, but the vehicle diverges from the planned path reducing operational efficiency
Solution Approach 1:
The system continuously monitors the vehicle's actual position using GPS receivers and compares it to the planned path. When deviation is detected, the control system automatically generates correction signals to steer the vehicle back to the intended path, creating a closed-loop feedback mechanism that maintains both path accuracy and operational efficiency
Solution Approach 2:
The automated guidance system enables the vehicle to self-correct its position without continuous manual intervention. The control system processes position data, calculates deviations, and adjusts steering automatically, allowing the vehicle to service itself and maintain path alignment while improving productivity
2Productivity
If automated path following is implemented, then operational efficiency improves, but the vehicle cannot respond to operator inputs and changes in field conditions
Solution Approach 1:
The control system dynamically adjusts its behavior based on real-time conditions. It can operate in different modes (fully automatic, semi-automatic with operator override, or manual) and continuously adapts its control signals based on the vehicle's current position, heading error, and external factors like wind or terrain changes, making the system both efficient and adaptable
3Adaptability or versatility
If the vehicle diverges from the planned path, then adaptability to field conditions improves, but path accuracy deteriorates leading to inefficiencies
Solution Approach 1:
The system uses continuous feedback from GPS position data to detect path deviations and automatically generates corrective steering signals. The control algorithm calculates the heading error and adjusts the vehicle's course in real-time, maintaining path accuracy while allowing for necessary adaptations to field conditions through controlled corrections
Data Source
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AI summary
A swath tracking system for an off-road vehicle includes a control system with a processor and a memory. The control system is configured to receive a plurality of vehicle location points and a current vehicle state, wherein the current vehicle state comprises a current vehicle location, generate a planned vehicle path through one or more of the plurality of vehicle location points, generate a correction path from the current vehicle location to a point along the planned vehicle path ahead of the current vehicle location along a direction of travel, generate a blended path by blending the planned vehicle path and the correction path based at least in part on an assigned weight, wherein the assigned weight is based at least in part on a heading error, a distance between the current vehicle location and the planned path, or a combination thereof, and guide the off-road vehicle along the blended path.