Steering Wheel Vibration Control Without Turning Wheel Disturbance
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Solution Overview
Problem
In vehicles with mechanically coupled steering wheel and turning wheels, the vibration of the steering wheel can influence the vehicle's behavior, and existing technologies do not effectively address this issue while providing necessary warnings or corrections.
Innovation Solution
A steering control device that includes a processor to execute processes for acquiring alarm information, vibrating the steering wheel in a predetermined region where the turning angle does not change, and adjusting the steering angle to enhance responsiveness and stability during automatic steering interventions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the steering wheel is vibrated to provide alarm information to the driver, then the warning effectiveness is improved, but the vehicle behavior may be influenced due to mechanical coupling
Solution Approach 1:
The patent applies local quality by identifying and utilizing a specific region of the steering wheel (the predetermined region where turning angle does not change) for vibration application. This localized approach ensures that vibration effects are confined to a specific area that does not transmit harmful mechanical forces to the vehicle's steering system, while still providing effective tactile feedback to the driver.
Solution Approach 2:
The system incorporates feedback by continuously monitoring the relationship between steering wheel rotation and turning wheel angle to dynamically identify the predetermined region. This feedback mechanism allows the system to adapt the vibration application area based on real-time steering conditions, ensuring optimal warning effectiveness while preventing adverse effects on vehicle behavior.
2Stability of the object's composition
If the steering wheel is displaced in the opposite direction at start of vibration, then the turning angle stability is improved, but the steering responsiveness may be affected
Solution Approach 1:
The patent applies preliminary action by displacing the steering wheel in the opposite direction before initiating vibration. This preparatory movement positions the steering system in an optimal state that prevents unintentional turning angle fluctuations during vibration, while the subsequent rapid displacement in the steering direction ensures quick response when needed.
Solution Approach 2:
The system employs periodic action through controlled vibration cycles that include displacement in the opposite direction followed by displacement in the steering direction. This periodic pattern maintains turning angle stability during the vibration phase while enabling rapid response when steering input is required, balancing stability and responsiveness.
3Object-affected harmful factors
If the vibration is applied in the predetermined region where turning angle does not change, then the vehicle behavior influence is minimized, but the vibration region identification complexity increases
Solution Approach 1:
The system applies self-service by utilizing the inherent mechanical characteristics of the steering system itself to identify the predetermined region. By monitoring the natural relationship between steering wheel rotation and turning wheel angle, the system automatically determines the vibration application area without requiring external sensors or complex additional components, thereby minimizing vehicle behavior influence while keeping the identification system relatively simple.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively restrains the influence of steering wheel vibration on vehicle behavior, provides timely warnings, and enhances the responsiveness and stability of steering control, particularly during lane departure avoidance scenarios.
Implementation Method 1
In vehicles with mechanically coupled steering wheel and turning wheels, the vibration of the steering wheel can influence the vehicle's behavior
Implementation Method 2
The vibration process is a process of vibrating the steering wheel in a predetermined region by operating the motor
Data Source
AI summary
A steering control device is configured to control a steering device. The steering device includes a steering wheel, a steering shaft coupled to the steering wheel, a turning wheel of a vehicle, and a motor configured to rotate the steering shaft. The turning wheel is configured to turn along with rotation of the steering shaft. The steering control device includes a processor. The processor is configured to execute an alarm information acquisition process of acquiring information indicating that an alarm needs to be issued to a driver of the vehicle, and a vibration process of vibrating the steering wheel in a predetermined region by operating the motor, in a situation where the alarm needs to be issued. The predetermined region is a region where a turning angle of the turning wheel does not change even when the steering wheel rotates.