Vehicle Following Control Restart for Smooth Lane Passing
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Solution Overview
Problem
Existing vehicle driving assist systems face challenges in smoothly passing next lane preceding vehicles during following moving control, as they often result in decreased vehicle speed due to premature suspension and restart of the control, leading to inefficient lane changes and increased driver effort.
Innovation Solution
A vehicle driving assist apparatus with an electronic control unit that suspends and restarts the following moving control based on specific conditions, including accelerating operations and predetermined times, to maintain a stable inter-vehicle distance and prevent unnecessary speed reductions, allowing for smoother passage of next lane preceding vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the following moving control is restarted when the accelerating operation is stopped, then the control responsiveness is improved, but the vehicle speed is considerably decreased
Solution Approach 1:
The system determines in advance whether to restart the following moving control by checking if the vehicle has passed the next lane preceding vehicle before restarting the control. This preliminary check prevents premature restart that would cause speed decrease, while still maintaining responsive control when appropriate.
2Adaptability or versatility
If the following moving control is suspended when the driver accelerates to pass next lane preceding vehicles, then the driver's accelerating operation is recognized, but the vehicle cannot smoothly pass the next lane preceding vehicles
Solution Approach 1:
The system dynamically adjusts the control state based on the vehicle's passing status. When the vehicle has passed the next lane preceding vehicle, the following moving control is restarted to maintain smooth motion. When the vehicle has not yet passed, the control remains suspended to allow continued acceleration, thus adapting to different passing stages.
3Extent of automation
If the following moving control is restarted after a predetermined time elapses, then the control is restarted eventually, but the vehicle speed is considerably decreased during the waiting period
Solution Approach 1:
The system uses feedback from the vehicle's passing status (whether the vehicle has passed the next lane preceding vehicle) to determine when to restart the following moving control. This feedback mechanism allows the system to restart control at the optimal moment rather than waiting for a fixed time period, thereby avoiding unnecessary speed decreases.
Data Source
AI summary
A vehicle driving assist apparatus suspends executing a following moving control and starts executing a process of measuring an elapsing time which elapses since suspending executing the following moving control when a control suspending condition that a driver of an own vehicle carries out an accelerating operation of accelerating the own vehicle in order to pass the next lane preceding vehicle, becomes satisfied, resets the elapsing time and start measuring the elapsing time which elapses since resetting the elapsing time when the own vehicle has passed the next lane preceding vehicle before the elapsing time reaches a predetermined time, and restarts executing the following moving control when a control restarting condition that the elapsing time reaches the predetermined time, is satisfied.