Vehicle Driving Support Control Device Integrating Driver Intent
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Solution Overview
Problem
Existing driving support systems and automatic driving systems often fail to reflect a driver's intention and characteristics, leading to a sense of incongruity when operating under machine-based control, as they primarily rely on machine inputs, which can result in reduced stability and comfort due to lack of driver input reflection.
Innovation Solution
A driving support control device that combines a steering assist mechanism and a braking-driving force distribution mechanism to determine and apply target steering and braking forces, allowing for both machine-based and driver-based inputs to be integrated, reducing the sense of incongruity by reflecting the driver's intentions and improving vehicle stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a driving support system operates based only on machine input (target input set by machine), then the system can achieve efficient automated driving control, but the driver's intention and characteristics are not reflected in vehicle motion, causing a sense of incongruity
Solution Approach 1:
The patent combines machine-based target input with driver-based actual steering input to control vehicle motion. The operating state determination unit integrates both inputs, and the motion control unit applies weighted combination where the drive support control amount is calculated based on both target steering angle and actual steering angle, merging automated control with driver intention reflection
Solution Approach 2:
The patent introduces an intermediary processing layer that includes the operating state determination unit and the motion control unit. This intermediary layer processes both machine target input and driver actual input, determining the appropriate blend ratio and calculating the final drive support control amount that reflects both automated guidance and driver intention
2Ease of operation
If the system suspends operation when driver overrides (steering input), then the driver has full control, but the advantageous effects of machine-based control are lost and driver input alone may reduce stability
Solution Approach 1:
The patent implements dynamic control blending where the system continuously adapts the ratio of machine-based control to driver-based control based on real-time operating conditions. The operating state determination unit dynamically determines whether to prioritize target input or actual steering input, and the motion control unit dynamically adjusts the drive support control amount to maintain optimal stability while respecting driver overrides
Solution Approach 2:
The patent changes the control parameter blending ratio based on operating state. When machine-based control is advantageous, the system increases the weight of target steering angle in the control calculation. When driver override is detected, the system adjusts the blending ratio to incorporate more actual steering input, thereby adapting control characteristics to maintain stability across different operating conditions
Data Source
AI summary
In a driving support system of a vehicle, there is provided a structure that, even during operating a control based on a machine input, a driver's sense of incongruity can be reduced as much as possible and/or the steering of the driver be can reflected. The vehicle is equipped with a steering assist mechanism and a braking-driving force distribution mechanism of right and left wheels. In operations of the inventive device, a steering assist torque, applied by the steering assist mechanism, is controlled to a target value determined with reference to a target steering torque to achieve the target route, determined without depending on steering of a driver, and a driver's steering torque; and a braking-driving force difference between the right and left wheels is controlled to a target value based on a steering angle of the driver.