Weight-Based Decoy Steering for Convoy Safety
Solution Overview
Problem
Weight-based mine-clearing systems face challenges in ensuring safety during entries and exits of bends, as the distance between the mine-clearing system and the vehicle needs to be maximized for safety, but this compromises mine-clearing performance and leaves potential zones unsecured.
Innovation Solution
A method for steering a convoy that includes a weight-based mine-clearing system, where the yaw-direction steering of the mine-clearing system is commanded based on the route to be followed, ensuring the vehicle follows a safe lane defined by the mine-clearing system, thereby maximizing safety without degrading performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distance between the wheelset of the mine-clearing system and the following vehicle is maximized for safety, then the vehicle safety is improved, but the mine-clearing performance deteriorates and zones during bends remain unsecured
Solution Approach 1:
The patent implements dynamic steering control where the mine-clearing system's steering angle is continuously adjusted based on the curvature of the route and the distance to the following vehicle. During straight sections, the system maintains maximum distance for safety. During bends, the system proactively steers the wheelsets to cover the outer edge of the turn, dynamically adapting the clearance pattern to the road geometry while maintaining optimal safety distances.
Solution Approach 2:
The system performs preliminary steering actions before the vehicle enters a bend. By detecting the route curvature in advance, the mine-clearing system proactively adjusts its wheelset orientation to pre-cover the zones that will be traversed during the upcoming bend, ensuring continuous protection without requiring the vehicle to reduce safety distance.
2Productivity
If the distance between the wheelset of the mine-clearing system and the following vehicle is reduced to improve mine-clearing performance, then the coverage during bends is improved, but the vehicle safety deteriorates due to increased proximity to explosion
Solution Approach 1:
The system dynamically adjusts the longitudinal distance between the wheelset and the following vehicle based on real-time conditions. During straight sections, maximum distance is maintained for safety. During bends, the system calculates the optimal reduced distance that allows adequate bend coverage while maintaining acceptable safety margins, and adjusts the steering angle compensator accordingly.
Solution Approach 2:
The patent changes key operational parameters (steering angle, longitudinal distance) based on route curvature and vehicle position. A steering angle compensator is calculated as a function of route curvature and distance, allowing the system to optimize both safety and performance by continuously adapting parameters rather than maintaining fixed values.
3Reliability
If the steering of the weight-based mine-clearing system is delayed to maintain maximum distance, then the vehicle safety is improved, but the steering response during bends deteriorates
Solution Approach 1:
The system performs preliminary steering adjustments based on predicted vehicle trajectory and route curvature. By detecting bends in advance and calculating the required steering angle compensator beforehand, the system ensures smooth, timely steering response during bends while maintaining maximum distance during straight sections, eliminating the delay-problem.
Solution Approach 2:
The steering control is made dynamic and predictive rather than reactive. The system continuously monitors route geometry and vehicle position to anticipate upcoming bends, adjusting the steering angle in advance based on calculated compensators that account for both the bend curvature and the current distance between wheelset and vehicle.
Data Source
AI summary
Method and device for steering a convoy (1) having a follower vehicle (2) to be protected and a weight-based decoy system (4), this method and these device being relative to the following steps: steering a controller of yaw-wise direction of the weight-based decoy system (4) depending on a route to follow, the weight-based decoy system (4) defining a safe track that is made so by passage of at least one axle-and-wheels assembly (5) suitable for exerting pressure on the ground; steering the follower vehicle (2) so that its wheels follow a path that falls on the safe track defined by the weight-based decoy system (4).