Steering Wheel Resistance Torque for Assisted Driving Risk Control
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Solution Overview
Problem
Intelligent vehicles face safety risks when drivers subconsciously resist active steering interventions during assisted driving, leading to potential collisions due to the rapid exit of the assisted driving function, compromising driving safety.
Innovation Solution
A vehicle control method that determines a resistance torque based on safety risk and steering operation torque, gradually increasing or decreasing it to remind the driver of potential safety impacts and align with their intentions, thereby improving safety and experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the assisted driving function exits steering control based on driver resistance torque, then the system returns driving right to the driver, but the driver cannot respond in short time to emerging driving risks, leading to potential collisions
Solution Approach 1:
The system applies preliminary anti-action by detecting driver resistance torque and predicting subconscious resistance before it leads to unsafe steering operations. The control system proactively identifies when driver panic or subconscious resistance is occurring and prevents the assisted driving function from exiting, thereby avoiding potential collisions while maintaining driver control freedom
Solution Approach 2:
The system implements feedback by continuously monitoring the torque difference between driver input and assisted driving output. This feedback mechanism allows the system to detect when the driver is subconsciously resisting the assisted steering, and based on this feedback, the system maintains the assisted driving function active to ensure safety while the driver regains composure
2Reliability
If the intelligent vehicle actively intervenes in steering control, then traveling safety is improved, but the driver subconsciously resists the intervention due to panic, causing the system to exit control
Solution Approach 1:
The system applies dynamics by making the assisted driving function's control authority dynamic rather than static. The system adjusts its level of intervention based on real-time detection of driver resistance torque, maintaining strong intervention when safety risks are detected and driver resistance is low, while gradually reducing intervention as driver acceptance improves, thereby adapting to the evolving driver-state-safety landscape
Data Source
AI summary
A vehicle control method includes: determining a resistance torque based on a safety risk of a vehicle and a torque of a steering operation input by a driver, where the resistance torque acts on a steering wheel of the vehicle to resist the torque of the steering operation, and the resistance torque is gradually increased when the safety risk of the vehicle is high. In this way, the driver feels the resistance torque from the steering wheel during the steering operation, and the driver is reminded that the current steering operation may affect driving safety. This avoids impact on the driving safety caused by the steering operation input by the driver due to a subconscious action. An apparatus for implementing the vehicle control method and a vehicle are further provided.