Adaptive Cruise Control Peripheral Traffic Speed Matching
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Solution Overview
Problem
Conventional Adaptive Cruise Control (ACC) systems accelerate vehicles unnecessarily when there are no preceding vehicles in the traveling lane, leading to reduced driving safety and stability, especially in crowded peripheral streets.
Innovation Solution
An adaptive cruise control system that includes a peripheral environment detection sensor and an electronic control unit (ECU) to detect and respond to the average speed of vehicles in adjacent lanes, adjusting acceleration/deceleration to match the peripheral traffic conditions, thereby preventing unnecessary acceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional ACC system accelerates the host vehicle when no preceding vehicle is detected in the traveling lane, then the ACC system maintains basic cruise control functionality, but driving safety and stability are reduced due to unnecessary acceleration in crowded peripheral streets
Solution Approach 1:
The system expands detection from the single traveling lane to multiple peripheral lanes, adding spatial dimensions to the detection field. By detecting vehicles in peripheral lanes and calculating their average speed, the system gains additional information about the overall traffic environment, enabling more appropriate acceleration control decisions that consider crowded street conditions
Solution Approach 2:
The system implements feedback by continuously monitoring peripheral traffic conditions and using the calculated average speed of peripheral vehicles to adjust the host vehicle's target acceleration. The ECU compares the legacy ACC target acceleration with the average peripheral speed and modifies acceleration accordingly, creating a closed-loop control system that responds to environmental feedback
Data Source
AI summary
An adaptive cruise control (ACC) system and method based on peripheral situations of a vehicle are disclosed. The ACC system includes a peripheral environment detection sensor configured to detect a peripheral environment or situation of a host vehicle during an ACC process of the host vehicle, and an electronic control unit (ECU) configured to autonomously perform acceleration or deceleration control of the host vehicle according to an ACC target acceleration/deceleration amount suitable for the peripheral environment or situation detected by the peripheral environment detection sensor.