Vehicle Braking Control for Low-Speed Cut-In Avoidance
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Solution Overview
Problem
Existing driving safety systems fail to effectively operate in low-speed situations due to sensor limitations, leading to potential collisions from delayed automatic control decisions when a target vehicle attempts a sudden cut-in with a large heading angle.
Innovation Solution
A vehicle control system that utilizes sensors to determine a target vehicle's entry condition, calculates a first position control reference point based on heading angles and lateral positions, and adjusts braking control to avoid collisions by considering a new lateral position reference point instead of relying solely on the rear bumper center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If braking control is performed based on lateral position with respect to center of rear bumper of target vehicle, then the control system is simple to implement, but there is a high possibility of collision due to delayed automatic control decision in low-speed cut-in scenarios
Solution Approach 1:
The patent changes the reference parameter for braking control from the center of the rear bumper to a dynamically calculated reference point based on the target vehicle's heading angle. This parameter change allows the system to account for the target vehicle's orientation, enabling earlier and more accurate braking decisions in low-speed cut-in scenarios while maintaining system simplicity
Solution Approach 2:
The system performs preliminary calculation of the braking reference point using the target vehicle's heading angle before the actual braking event occurs. This preliminary action enables the control system to anticipate the cut-in maneuver and initiate braking earlier, improving collision avoidance reliability without complicating the control implementation
2Extent of automation
If sensor-based physical values are used for braking control, then the system operates automatically, but the physical value may not quickly reflect driving condition in low-speed situations due to sensor limitations
Solution Approach 1:
The patent introduces the target vehicle's heading angle as an intermediary parameter that bridges the gap between sensor data and braking control decisions. This intermediary provides additional contextual information about the target vehicle's intent, allowing the automated system to respond more quickly to low-speed cut-in maneuvers without relying solely on delayed sensor physical values
Data Source
AI summary
An apparatus for controlling a vehicle may comprise a processor coupled to a memory. The memory is configured to store instructions that, when executed by the processor, cause the apparatus to perform various functions. These include receiving sensor information from at least one of a plurality of sensors disposed at the vehicle, where the sensor information may relate to at least one object within a threshold distance to the vehicle. The apparatus may determine, based on a preset target condition and the sensor information, a target vehicle, and assess whether an entry condition in which the target vehicle enters a driving lane of the vehicle is satisfied. If the entry condition is satisfied, the apparatus determines a first position control reference point for avoiding a collision with the target vehicle and, based on the first position control reference point, determines a braking control for the vehicle.