Vehicle Acquisition Guidance Path Control for Overshoot Reduction
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Solution Overview
Problem
Existing vehicle guidance path acquisition methods result in reduced energy efficiency, time delays, and incomplete coverage due to either insufficient directness or excessive overshooting of the desired path, lacking effective control over overshoot and undershoot.
Innovation Solution
A method and system that determine an acquisition guidance path for vehicles by defining a desired path and calculating a guidance path based on a first acquisition factor (attack angle) and a second acquisition factor (ratio of heading error to lateral error), allowing for precise control of travel to the desired path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conservative acquisition guidance path plan is used, then the vehicle avoids overshooting the desired path, but the travel becomes less direct resulting in reduced energy efficiency and increased time delay
Solution Approach 1:
The system dynamically adjusts acquisition factors (first and second acquisition factors) that control the vehicle's approach to the desired path. By changing these parameters based on real-time positioning and path geometry, the system optimizes the balance between directness and accuracy, improving energy efficiency while maintaining path precision.
Solution Approach 2:
The acquisition guidance path is dynamically calculated rather than static. The system continuously updates the guidance path based on the vehicle's current position, the desired path geometry, and the acquisition factors, allowing adaptive optimization of the trade-off between direct travel and precise path acquisition.
2Use of energy by moving object
If an aggressive acquisition guidance path plan is used, then the vehicle travels more directly to the desired path improving energy efficiency, but the vehicle overshoots the desired path resulting in reduced precision and travel over undesirable areas
Solution Approach 1:
The system uses feedback from the vehicle's actual position relative to the desired path to adjust the acquisition guidance. By continuously monitoring positioning data and comparing it with the calculated guidance path, the system can correct for potential overshoot while maintaining an aggressive, energy-efficient approach to path acquisition.
Solution Approach 2:
The system pre-calculates the acquisition guidance path taking into account the vehicle's dynamics and the desired path geometry. By anticipating potential overshoot conditions before they occur, the system can adjust the guidance path in advance to prevent excessive deviation from the desired path.
3Device complexity
If traditional guidance path acquisition methods are used, then the system is simple to implement, but the vehicle experiences time delays and incomplete coverage
Solution Approach 1:
The acquisition guidance path system integrates multiple functions into a single computational framework. The same system calculates both the acquisition path to the desired guidance path and monitors coverage completion, eliminating the need for separate complex subsystems while improving overall operational efficiency and reducing time delays.
Data Source
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AI summary
A system and method of determining an acquisition guidance path of a vehicle includes defining a desired guidance path for travel by the vehicle, determining a first acquisition factor of the acquisition guidance path between the vehicle and the desired guidance path, determining a second acquisition factor defining a ratio between a heading error and a lateral error of the acquisition guidance path, and calculating the acquisition guidance path based on the first acquisition factor and the second acquisition factor to control travel of the vehicle to the desired guidance path.