Vehicle Deceleration Control Using Target Recognition Feedback
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Solution Overview
Problem
Conventional vehicle control systems fail to accurately determine the driver's intention behind operating the acceleration operator during deceleration control, leading to inconsistent and non-compliant travel assist control.
Innovation Solution
A vehicle control apparatus that initiates deceleration control based on predefined conditions, suspends it upon operator input, and resumes or ends the control based on specific criteria such as time elapsed and target recognition, ensuring alignment with the driver's intended actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If deceleration control is automatically resumed after acceleration operator operation ends, then system automation is improved, but driver intention compliance deteriorates
Solution Approach 1:
The system introduces feedback by monitoring whether a deceleration target is recognized when the acceleration operator operation ends. This feedback mechanism allows the system to distinguish between driver intentions: if the target is recognized, the driver likely wants to resume deceleration control; if not recognized, the driver likely wants to cancel it. This resolves the contradiction by making automation adaptive to actual driver intention rather than following a fixed automatic resumption rule.
Solution Approach 2:
The system dynamically adjusts the deceleration control resumption behavior based on real-time recognition status of the deceleration target. Instead of a static automatic resumption policy, the system transitions between different control states (resume vs. cancel) based on the dynamic condition of target recognition, thereby adapting to varying driver intentions while maintaining high automation.
2Reliability
If deceleration control is cancelled when acceleration operator is operated, then driver intention compliance is improved, but system automation deteriorates
Solution Approach 1:
The system uses feedback from deceleration target recognition status to determine whether to cancel or resume deceleration control. This feedback loop enables the system to automatically make intelligent decisions that comply with driver intention, resolving the contradiction by showing that automation and intention compliance can coexist when the system has adequate information about driver intent through target recognition feedback.
3Device complexity
If deceleration control is resumed without determining driver intention, then system simplicity is maintained, but control precision deteriorates
Solution Approach 1:
The system uses the deceleration target recognition status as a self-indicating signal of driver intention. The recognition status itself serves as the criterion for decision-making, eliminating the need for complex intention detection algorithms. This resolves the contradiction by showing that simple system logic can achieve precise intention determination when the system leverages existing operational data (target recognition status) as the decision criterion.
Data Source
AI summary
A vehicle control apparatus starts deceleration control to decelerate a vehicle in a case where the distance between a deceleration target ahead of the vehicle and the vehicle based on map data is acquired and a deceleration start condition that the distance is less than or equal to a first distance is satisfied. The vehicle control apparatus is configured to accelerate the vehicle based on the operation amount of an acceleration operator of the vehicle and determine whether a deceleration end condition is satisfied in a case where the acceleration operator is operated during the execution of the deceleration control, end the deceleration control in a case where the deceleration end condition is satisfied, and resume the deceleration control in a case where the operation on the acceleration operator ends in a case where the deceleration end condition is not satisfied.