Rear Axle Steering Control for Bus Stop Collision Avoidance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Large vehicles, such as buses and trucks, face increased tire wear and larger turning radii due to ground resistance, leading to accidents when the rear axle steering device is not properly controlled, especially when departing from bus stops without door opening or closing, resulting in collisions with people or nearby vehicles.
Innovation Solution
A steering control system for the rear axle steering device that determines the presence of avoidance target areas, such as bus stops or obstacles, and adjusts the rear wheel steering angle to a neutral position when necessary, ensuring safe distance and reducing the turning radius during vehicle operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the rear axle steering device is controlled based on door opening/closing status only, then the control logic is simple, but the vehicle may collide with people or objects at bus stops when departing without door operation
Solution Approach 1:
The patent introduces an intermediary detection system (camera or sensor) that detects people or objects in the rear vicinity of the vehicle. This intermediary device acts as a mediator between the steering control system and the actual steering action, providing additional information about the environment that triggers appropriate steering adjustments to prevent collisions at bus stops
Solution Approach 2:
The system performs preliminary detection of the rear environment before the vehicle departs from a bus stop. By detecting the presence of people or objects in advance and setting the rear wheel steering angle to neutral beforehand, the system prevents potential collisions before they can occur during departure
2Ease of operation
If the rear wheel steering angle is adjusted to reduce turning radius, then the vehicle can turn more smoothly, but the vehicle may collide with obstacles in the rear avoidance target area
Solution Approach 1:
The patent implements dynamic adjustment of the rear wheel steering angle based on real-time detection of the rear environment. When obstacles or people are detected in the avoidance target area, the system dynamically sets the rear wheel steering angle to neutral, preventing collisions. When the area is clear, the system allows normal steering operation for smooth turning
Solution Approach 2:
The system continuously monitors the rear avoidance target area and provides feedback to the steering control system. Based on this feedback about obstacle presence, the controller automatically adjusts the rear wheel steering angle to either neutral (when obstacles present) or normal steering mode (when clear), creating a closed-loop control system that prevents collisions
Data Source
AI summary
A system and method of controlling steering of a rear axle steering device is configured so that conditions, under which the rear axle steering device is operated, are diversified during traveling of a vehicle to allow the rear axle steering device to be used universally, facilitating stable traveling of the vehicle.