Driving Assistance Apparatus Target-Dependent Deceleration Control
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Solution Overview
Problem
Existing driving assistance systems cause driver discomfort due to uniform deceleration control, regardless of the deceleration target, leading to inadequate deceleration assistance.
Innovation Solution
A driving assistance apparatus that specifies the type of deceleration target and adjusts the end condition of deceleration assistance accordingly, using external information recognition, vehicle information acquisition, deceleration intention determination, and assistance amount arithmetic devices to control the vehicle's deceleration independently of the driver's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If uniform deceleration control is applied regardless of target type, then the deceleration control system is simple to operate, but the driver experiences discomfort
Solution Approach 1:
The patent applies local quality by differentiating deceleration control parameters based on target type. The controller specifies different end conditions for deceleration assistance depending on whether the target is a pedestrian, vehicle, or other object, thereby providing locally optimized deceleration characteristics for each target category rather than uniform control
Solution Approach 2:
The patent implements dynamics by making the deceleration control parameters adaptive rather than fixed. The controller dynamically adjusts the end condition of deceleration assistance based on real-time identification of target type, allowing the system to transition between different control modes depending on the situation
2Reliability
If deceleration control is performed independently of driver operation, then the deceleration assistance effectiveness is improved, but the driver loses control over stop position
Solution Approach 1:
The patent applies partial action by providing deceleration assistance only up to a specified end condition rather than complete automatic stopping. The controller maintains driver control by ending the automated deceleration assistance at appropriate points, allowing the driver to complete the stopping maneuver based on the identified target type
3Device complexity
If the end condition of deceleration assistance is fixed, then the control system is simple, but it cannot adapt to different target types
Solution Approach 1:
The patent implements parameter changes by modifying the end condition parameters of deceleration assistance based on target type identification. The controller changes key parameters such as the end speed and end position of deceleration assistance depending on whether the target is a pedestrian, vehicle, or other object, thereby achieving adaptability through parameter variation
Data Source
AI summary
A driving assistance apparatus can provide deceleration assistance of decelerating a host vehicle independently of an operation by a driver. The driving assistance apparatus is provided with: a specifier configured to specify a type of a target associated with the deceleration assistance, wherein the target is ahead of the host vehicle on a course thereof and requires the host vehicle to decelerate or stop; and a controller programmed to change an end condition associated with deceleration assistance, in accordance with the specified type.