Vehicle Travel Control for Intervention Stop Cancellation
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Solution Overview
Problem
Existing vehicle control systems face challenges in effectively canceling intervention stop controls, which are implemented to prevent unsafe vehicle operations, and in smoothly transitioning from intervention stop to normal driving modes.
Innovation Solution
A vehicle traveling control apparatus that includes a controller capable of acquiring operation information from the occupant, executing intervention stop control to decelerate and stop the vehicle, cancelling this intervention when appropriate, and resuming normal acceleration control with a second driving control that suppresses acceleration compared to normal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle constantly continues the intervention stop control until it decelerates and stops, then traveling safety is improved, but the occupant cannot control the vehicle as expected and secondary hazards may occur
Solution Approach 1:
The patent applies dynamics by making the intervention stop control duration adaptive rather than fixed. The control system dynamically adjusts the intervention period based on real-time assessment of the occupant's operational state, allowing the intervention to last only as long as necessary to correct unsafe conditions while preserving occupant control authority.
Solution Approach 2:
The patent implements feedback mechanisms where the control system continuously monitors occupant operations and vehicle state during intervention stop control. Based on this feedback, the system determines when to cancel the intervention and restore normal control, ensuring that safety interventions are applied appropriately without unnecessarily restricting occupant authority.
2Speed
If the vehicle executes driving control of accelerating the vehicle based on excessive operation input by the occupant in a surprised state, then normal driving responsiveness is maintained, but secondary unexpected events may occur
Solution Approach 1:
The patent applies preliminary anti-action by implementing acceleration suppression control that preemptively limits excessive acceleration commands following intervention stop cancellation. This preventive measure counteracts the potential harmful effect of surprised occupant operations before they can cause secondary unexpected events, while still allowing normal acceleration when appropriate.
3Adaptability or versatility
If the intervention stop control is cancelled when the accelerator pedal is operated by an occupant during intervention control, then control flexibility is improved, but the occupant may be surprised by sudden acceleration
Solution Approach 1:
The patent applies parameter changes by modifying the acceleration parameter through suppression control when cancelling intervention stop control. Instead of restoring full acceleration responsiveness immediately, the system adjusts the acceleration parameter to a suppressed level, reducing occupant surprise while maintaining control flexibility.
Data Source
AI summary
A vehicle traveling control apparatus includes: an operation member configured to operate traveling of a vehicle; and a controller configured to execute a traveling control including an acceleration or deceleration control of accelerating or decelerating the vehicle in accordance with operation information regarding an operation on the operation member by an occupant. The controller executes an intervention stop control of decelerating and stopping the vehicle that is traveling, an intervention cancellation control of cancelling the intervention stop control, and a driving control of accelerating the vehicle. When an abnormal operation on the accelerator pedal is determined during the driving control, the controller cancels the intervention stop control, and then accelerates the vehicle by a second driving control that suppresses acceleration as compared with a first driving control of accelerating the vehicle in accordance with an operation amount on the operation member by the occupant.