Automatic Steering Control Adaptation for Driver Intervention
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Solution Overview
Problem
Automatic driving systems that are not functioning well continue to exert steering control, leading to discomfort for drivers who must intervene to maintain trackability along a target route, as existing systems do not adequately compensate for system inefficiencies and can prevent necessary driver steering interventions.
Innovation Solution
An automatic driving system with an electric power steering apparatus and a control apparatus that determines the system's performance based on tracking conditions, allowing increased driver steering intervention reflection in control variables when the system is not working well, thereby reducing discomfort by adjusting the automatic steering control's influence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the automatic driving system continues automatic steering control when not working well, then the vehicle trackability is maintained, but driver discomfort increases due to steering intervention being prevented
Solution Approach 1:
The control apparatus dynamically adjusts the degree of driver steering intervention based on the determined working condition of the automatic driving system. When the system is determined to be working well, automatic steering control is prioritized. When not working well, the degree of driver steering intervention is increased, allowing the driver to override the automatic control. This dynamic adjustment resolves the contradiction by making the system adaptable to different operational states.
Solution Approach 2:
The patent changes the control parameter representing the degree of driver steering intervention based on the system's working condition. When the automatic driving system is determined to be not working well, the parameter is adjusted to allow greater driver input reflection in the control variable, thereby reducing driver discomfort while maintaining adequate trackability through conditional parameter modification.
2Ease of operation
If the degree of driver steering intervention is increased when the automatic driving system is not working well, then driver discomfort is reduced, but vehicle trackability decreases
Solution Approach 1:
The system dynamically adjusts the control variable based on real-time determination of system working condition. When the automatic driving system is determined to be working well, automatic steering control has higher influence. When not working well, the system transitions to a state where driver steering intervention has increased influence. This dynamic switching allows the system to optimize between trackability and driver ease of operation depending on the operational state.
Data Source
AI summary
The automatic driving system comprises an electric power steering apparatus and a control apparatus that performs automatic steering control. The control apparatus is programmed to perform determining processing and coping processing. In the determining processing, it is determined whether the automatic driving system is working well or not working well, based on tracking condition of the target traveling route by the vehicle. The coping processing is processing to increase a degree with which the steering intervention by the driver is reflected to a control variable of the electric power steering apparatus when the automatic driving system is determined to be not working well.