Movable Object Track Switching at Junctions With Large Turn Angles
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Solution Overview
Problem
Existing control systems for movable objects, such as vehicles, face inefficiencies and safety concerns when changing movement tracks, particularly when the new track has a large angle deviation from the current direction, leading to potential accidents and the need for inefficient temporary stops.
Innovation Solution
A control device that determines the need for track changes, specifies candidate tracks, and changes the track when the object is a predetermined distance from a junction, minimizing direction changes and ensuring safe navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If re-guidance is performed to avoid passage disturbing factors, then the movable object can navigate around obstacles, but the movable object may not be able to turn at intersections and may depart from the new movement track
Solution Approach 1:
The system performs preliminary evaluation of track change feasibility by calculating the angle between current movement direction and candidate track direction before executing the turn. This preliminary assessment prevents unsafe track changes by identifying intersections where the turning angle exceeds the movable object's capability, thereby avoiding departures from the new movement track while still enabling safe re-guidance around obstacles
2Reliability
If the movable object temporarily stops to change movement track, then safe movement is secured, but movement efficiency is significantly reduced
Solution Approach 1:
The system changes the parameter of track selection by evaluating multiple candidate tracks and selecting one that minimizes the turning angle. This parameter optimization enables the movable object to maintain its movement speed and continue smoothly along the new track without temporary stops, thereby preserving movement efficiency while ensuring safe track changes
3Adaptability or versatility
If the movable object changes moving direction to follow a new movement track with large angle deviation, then the new track is followed, but the movable object may not be able to turn and may cause unexpected accidents
Solution Approach 1:
The system incorporates feedback by continuously monitoring the angle between the current movement direction and each candidate track direction. This feedback mechanism enables the system to select candidate tracks that are compatible with the movable object's turning capability, thereby maintaining track flexibility while preventing unsafe direction changes that could lead to accidents
Data Source
AI summary
A movable object position determining unit of a control device for a movable object is configured to determine whether a current position of the movable object is separated a predetermined distance or more from a transit point which is a junction between a valid movement track and a candidate movement track. A change processing unit is configured to change the candidate movement track as a new valid movement track when a track change determining unit determines that the current position of the movable object is separated the predetermined distance or more from the transit point as the junction.