Vehicle Driving Control Apparatus Override Threshold Adjustment
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Solution Overview
Problem
Existing partially automated in-lane driving systems do not effectively prevent rapid deceleration or acceleration behaviors caused by excessive driver override during function failures, leading to potential vehicle collisions and traffic flow disruptions.
Innovation Solution
A driving control apparatus that includes an environmental condition estimating part, a path generating part, and a vehicle control part, capable of executing an ACC function, LKA function, and an override function, which alters the ACC override threshold to a higher value during LKA function failures to prevent excessive brake or accelerator pedal operations, ensuring smooth transition to fallback control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ACC function is stopped and operation takeover is requested at LKA function failure time, then the driver can take control of the vehicle, but the driver may perform excessive brake or accelerator pedal operation causing rapid deceleration or acceleration behavior
Solution Approach 1:
The system applies preliminary anti-action by detecting excessive pedal operation inputs before they cause harmful rapid deceleration or acceleration. When the LKA function fails and ACC takeover is requested, the system monitors the accelerator and brake pedal operations, and when excessive operation is detected, it suppresses the override and maintains ACC control to prevent the harmful behavior from occurring.
Solution Approach 2:
The system uses an intermediary control mechanism between the driver's pedal operation and the vehicle's acceleration/deceleration output. During LKA failure and ACC takeover transition, the system acts as an intermediary by detecting excessive pedal inputs and intervening to prevent them from causing rapid deceleration or acceleration, thus mediating between driver intent and vehicle response to ensure safety.
2Ease of operation
If the override function allows driver intervention to stop ACC, then the driver can override automated control, but excessive override during function failure causes traffic flow disruption and potential collisions
Solution Approach 1:
The system implements feedback by continuously monitoring accelerator and brake pedal operations during LKA function failure and ACC takeover. When excessive pedal operation is detected, the system provides feedback by suppressing the override and maintaining ACC control, thereby preventing harmful traffic flow disruption and collision risks while still allowing normal driver intervention.
3Reliability
If the system transitions to ACC fallback control mode at LKA function failure, then the ACC function can continue operating with modified parameters, but the transition process creates a vulnerable period where driver panic may cause excessive override
Solution Approach 1:
The system applies beforehand cushioning by preparing for potential driver panic during the ACC fallback transition. When LKA function fails and ACC takeover is requested, the system anticipates that the driver may perform excessive pedal operation and pre-establishes protection by detecting and suppressing such excessive inputs, thereby cushioning against the vulnerable transition period and maintaining safe operation.
Data Source
AI summary
A driving control apparatus for a vehicle is provided with an environmental condition estimating part including: a surrounding recognizing function that recognizes the vehicle's driving lane; and another vehicle driving on the driving lane; and a function that obtains the vehicle's moving state, a path generating part that generates a target path based on information obtained by the environmental condition estimating part, and a vehicle control part that performs speed control and steering control for causing the vehicle to follow the target path, and configured to be capable of executing an ACC function that performs a constant speed drive or a following drive, an LKA function that keeps the driving within the vehicle's driving lane, an override function that stops the ACC function by operation intervention of a driver, and a function that performs fallback control of the ACC function, the apparatus being configured to alter an ACC override threshold.