Vehicle Steering Control Device for Driver-Intent Detection
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Solution Overview
Problem
Existing vehicle control systems fail to adequately consider both driver-intended and system-intended steering states, leading to potential unintended steering scenarios during driving assistance.
Innovation Solution
A control device that acquires steering torque, angle velocity, and angle deviation to determine whether the steering state is intended by the driver or the system, adjusting steering control accordingly to ensure alignment with the driver's intentions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If steering control is performed by driving assistance system, then lane keeping and safety are improved, but the driver's intended steering may be overlooked causing unintended steering scenarios
Solution Approach 1:
The control device continuously monitors steering torque, steering angle velocity, and steering angle deviation during driving assistance operation. By comparing actual steering angle with instructed steering angle and analyzing the relationship between steering torque and steering angle velocity, the system identifies driver intent and adjusts steering control accordingly, ensuring both safety and driver intent recognition.
Solution Approach 2:
The system dynamically adjusts steering control based on real-time detection of driver intent. When driver intent is detected, the control device modifies its steering commands to align with driver intentions while maintaining safety functions. This dynamic adaptation allows the system to respond to changing driving conditions and driver needs during automated steering operations.
2Ease of operation
If steering control is based only on driver input, then driver control is maintained, but driving assistance functions cannot properly execute steering control
Solution Approach 1:
The control device merges driver steering input with driving assistance steering control by detecting both steering torque from the driver and steering angle deviation from the instructed angle. The system integrates these signals to determine overall steering intent, allowing automated steering functions to execute properly while maintaining driver control authority and awareness.
3Manufacturing precision
If steering angle deviation is used to detect driver intent, then steering accuracy is improved, but system complexity increases due to multiple sensors and processing
Solution Approach 1:
The control device utilizes existing steering system components (steering torque sensor, steering angle sensor) for multiple functions: detecting driver intent, monitoring steering accuracy, and controlling driving assistance operations. By making the steering control system multi-functional, the patent achieves high steering accuracy without proportionally increasing system complexity.
Data Source
AI summary
A control device is configured to control a vehicle that allows for steering a steering device by a driver and steering the steering device by the control device. The control device comprises circuitry configured to: acquire a steering torque, a steering angle velocity, and a steering angle deviation which is a difference between an instructed steering angle by the control device and an actual steering angle of the steering device; and determine, when the steering device is steered by the control device, whether a steering state is a steering state intended by the driver or a steering state intended by the control device, based on the steering torque, the steering angle velocity, and the steering angle deviation.