Rear Collision Brake Control With Adaptive Pressure Compensation
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Solution Overview
Problem
Existing rear collision traffic assist brake (RCTB) systems may not adequately prevent collisions due to insufficient braking performance, which can be influenced by vehicle and road conditions, leading to potential accidents during rear-side obstacle approaches.
Innovation Solution
The RCTB system calculates a reference braking pressure and generates an additional braking pressure based on specific conditions such as movement distance, speed, collision distance, and road inclination, increasing the total braking pressure when normal braking is not sufficient to prevent a collision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RCTB system increases total braking pressure to compensate for insufficient braking performance, then collision avoidance capability is improved, but the complexity of the control system increases due to multiple monitoring parameters and conditions
Solution Approach 1:
The control unit performs multiple functions: it monitors movement distance, speed, collision distance, collision time, and road inclination, then integrates this information to determine additional braking pressure. This multi-functional approach consolidates complex monitoring and control tasks into a single control unit, managing system complexity while maintaining high collision avoidance capability through comprehensive parameter assessment.
Solution Approach 2:
The system implements continuous feedback monitoring of multiple parameters (movement distance, speed, collision distance, collision time, road inclination) and adjusts braking pressure based on this feedback. The control unit receives real-time information about vehicle state and environmental conditions, processes this feedback, and dynamically adjusts the additional braking pressure accordingly. This feedback mechanism enables reliable collision avoidance while managing control complexity through systematic information processing.
Data Source
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AI summary
A method for controlling a rear collision traffic assist brake (RCTB) system of a vehicle includes: receiving information on an ego vehicle and an obstacle; performing braking by calculating the received information and generating a reference braking pressure when a collision with the obstacle is predicted; storing a location of the ego vehicle at a reference point in time for generating the reference braking pressure, a speed of the ego vehicle, an estimated reference collision distance, which is a distance from the ego vehicle to an estimated collision point with the obstacle, and an estimated reference collision time; monitoring whether normal braking is performed based on the stored data; and generating an additional braking pressure to increase a total braking pressure when it is determined that the normal braking is not performed during the monitoring.