Towed Implement Compensation via Dynamic Offset Calculation
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Solution Overview
Problem
Current satellite-based navigation systems, such as GPS-based systems, face challenges in providing accurate guidance for vehicles towing implements, as the implement path often deviates from the target path, especially when the implement is towed by a vehicle, leading to inefficiencies and manual corrections by operators.
Innovation Solution
A method and system for real-time towed implement compensation, which dynamically calculates implement and vehicle offsets relative to a targeted track, generates a modified vehicle offset based on lateral errors, and provides steering control signals to guide the vehicle and implement onto the target path during automatic steering control resumption, using satellite-based navigation systems with integrated receivers and processors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If satellite-based navigation systems are used for vehicle guidance, then navigation coverage and basic positioning capability are improved, but implement path accuracy deteriorates due to implement deviation from target path
Solution Approach 1:
The system introduces an intermediary compensation mechanism that calculates implement offset based on vehicle offset and lateral error. This intermediary calculation layer transforms the vehicle's navigation position into the implement's actual position by applying geometric relationships and dynamic compensation factors, thereby resolving the discrepancy between vehicle guidance and implement path.
Solution Approach 2:
The system employs feedback by continuously monitoring lateral error and using it to dynamically adjust the vehicle offset calculation. The lateral error from the satellite navigation system feeds into the offset calculation, which then feeds back to generate corrected steering commands, creating a closed-loop control system that progressively reduces implement path deviation.
2Measurement precision
If manual correction is used to address implement deviation, then implement path accuracy is improved, but operator workload and time consumption increase
Solution Approach 1:
The system enables self-service by implementing automatic offset calculation and compensation without requiring manual intervention. The navigation system autonomously calculates implement position, determines lateral error, computes corrected offsets, and generates steering commands automatically, allowing the implement to self-correct its path deviation continuously and efficiently.
Solution Approach 2:
The system replaces manual mechanical correction with automated computational processing. Instead of relying on the operator to manually observe and correct implement position, the system uses satellite-based positioning, geometric calculations, and electronic control to automatically compensate for implement deviation, substituting human action with automated mechanical and computational systems.
3Measurement precision
If dynamic offset calculation is implemented, then implement path accuracy is improved, but computational complexity increases
Solution Approach 1:
The system segments the complex navigation problem into distinct computational modules: satellite position reception, lateral error calculation, implement offset determination, vehicle offset adjustment, and steering command generation. Each module handles a specific aspect of the calculation independently, reducing overall computational complexity while maintaining accuracy through systematic breakdown of the problem.
Solution Approach 2:
The system performs preliminary calculations by pre-establishing geometric relationships and offset formulas based on implement characteristics and vehicle configuration. These pre-calculated parameters and relationships are stored and readily applied during real-time operation, reducing the computational burden during dynamic navigation by avoiding recalculation of fundamental geometric parameters.
Data Source
AI summary
A method for providing real-time, towed implement compensation comprises dynamically calculating an implement offset relative to a targeted track for an implement located at a first implement location. Based on the calculated implement offset, a vehicle offset is dynamically calculated relative to the targeted track for a vehicle located at a first vehicle location. The method further includes dynamically calculating a modified vehicle offset relative to the targeted track based on the calculated vehicle offset and based on a dynamically-calculated vehicle lateral error. The method further includes dynamically providing a steering control signal based on the calculated modified vehicle offset.