Vehicle Steering Assist System Adaptive Control Setpoint
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle steering assist technologies often conflict with the driver's intention, as the steering assist torque can impede the driver's operations, leading to unintended steering reactions.
Innovation Solution
A vehicle driving operation support system that includes environment and traveling condition sensing, risk potential calculation, and adaptive control setpoint adjustment to align with the driver's intentions, using a provisional and normal control setpoint mechanism to smoothly shift steering reactions based on sensed driver reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If steering assist torque is controlled to reduce risk potential, then vehicle safety is improved, but driver's steering operation is impeded
Solution Approach 1:
The system senses driver's operation in reaction to the controlling operation and uses this feedback to adjust the control setpoint. When driver's operation indicates conflict with the provisional setpoint, the system switches to normal setpoint, thereby resolving the contradiction by making the assist system adaptive to driver's intentions.
Solution Approach 2:
The control setpoint is dynamically switched between provisional and normal modes based on sensed driver reaction. This dynamic adjustment allows the system to provide risk-reducing assist when appropriate while avoiding conflict with driver's intentional steering operations.
2Reliability
If steering assist torque is increased to enhance safety, then vehicle safety is improved, but steering smoothness deteriorates
Solution Approach 1:
The system changes the control parameter (control setpoint) between two states: provisional setpoint for risk reduction and normal setpoint for smooth operation. This parameter switching enables the system to achieve both safety and smoothness by applying appropriate control levels in different situations.
Data Source
AI summary
A motor vehicle includes a vehicle driving operation support system. The vehicle driving operation support system senses an environment surrounding the motor vehicle; senses a traveling condition of the motor vehicle; calculates a risk potential of the motor vehicle on a basis of the sensed environment and the sensed traveling condition; controls the motor vehicle on a basis of a control setpoint. The vehicle driving operation support system sets on a basis of the calculated risk potential the control setpoint to a provisional setpoint effective for reducing the risk potential; senses driver's operation in reaction to the controlling operation with the control setpoint set to the provisional setpoint; and sets the control setpoint to a normal setpoint on a basis of the sensed driver's operation.