Vehicle Start Control Adaptation to Peripheral Changes
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Solution Overview
Problem
Existing vehicle control devices lack optimal start control mechanisms that adapt to differences between stopped and traveling conditions, leading to inefficient start operations in vehicles following preceding vehicles in traffic jams.
Innovation Solution
A vehicle control device with a preceding vehicle recognition unit, travel control unit, and situation monitoring unit that adjusts start control based on changes in the peripheral and host vehicle situations, performing start control at a normal or suppressed control amount depending on detected changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the host vehicle starts to travel automatically when the preceding vehicle starts, then the frequency of start operation by driver is reduced, but the start control may not be optimal when there are changes in peripheral situation
Solution Approach 1:
The situation monitoring unit continuously monitors peripheral situations (other vehicles, pedestrians, obstacles) and provides feedback to the travel control unit. Based on this feedback, the travel control unit adjusts the start control amount or cancels start control when necessary changes are detected, enabling the automated system to adapt to changing conditions while maintaining automation.
Solution Approach 2:
The patent implements dynamic adjustment of start control parameters based on monitored situation changes. The control amount is not fixed but varies dynamically according to the detected peripheral situation, allowing the system to optimize performance for different driving contexts while maintaining automated operation.
2Speed
If the host vehicle performs start control at normal control amount, then the start response is prompt, but it may cause unsafe vehicle interactions when there are changes in peripheral situation
Solution Approach 1:
The situation monitoring unit detects changes in peripheral situations (appearance of other vehicles, pedestrians, obstacles) and provides feedback to the travel control unit. When changes are detected, the system adjusts the control amount to suppressed levels or cancels start control, preventing unsafe interactions while maintaining the capability for prompt response when conditions are safe.
Solution Approach 2:
The system performs preliminary monitoring of peripheral situations before executing start control. When potential hazards are detected in advance, the system takes counter-actions by suppressing or canceling the start control, preventing unsafe vehicle interactions before they can occur.
3Object-affected harmful factors
If the host vehicle suppresses start control amount, then safe vehicle interactions are ensured, but the start operation becomes less efficient
Solution Approach 1:
The patent implements dynamic adjustment of start control parameters based on monitored situation changes. The control amount is not fixed but varies dynamically according to the detected peripheral situation, allowing the system to optimize performance for different driving contexts while maintaining automated operation.
Solution Approach 2:
The system changes the control amount parameter based on detected situation changes. When no changes are detected, normal control amount is used for efficient start operation. When changes are detected, the control amount is suppressed or start control is canceled to ensure safety, thus optimizing both efficiency and safety conditions.
Data Source
AI summary
After stop control and before start control, if a situation monitoring unit does not detect predetermined change of a peripheral situation or a host vehicle situation, a travel control unit performs the start control at the normal control amount, and if the situation monitoring unit detects the predetermined change of the peripheral situation or the host vehicle situation, the travel control unit performs the start control at the control amount that is suppressed compared with the normal control amount.