Vehicle Motor Torque Modulation for Haptic Vibration Alerts
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Solution Overview
Problem
Traditional lane departure warning systems require additional devices to generate haptic vibration feedback, which increases costs and complexity, and are not effectively adaptable to various driving scenarios and events beyond lane departure.
Innovation Solution
A method and system that utilize the vehicle's motor and friction braking system to control propulsion and braking, generating a torque modulation that creates a haptic vibration alert without additional devices, allowing for flexible and adaptable warning mechanisms for events like lane departure, traffic interference, or obstacle detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional devices are installed to generate haptic vibration feedback, then warning effectiveness is improved, but device complexity and cost increase
Solution Approach 1:
The motor is made to perform multiple functions: both propulsion and haptic vibration warning generation. By modulating the motor torque, the system uses an existing component (the motor) to provide both driving force and warning feedback, eliminating the need for dedicated haptic devices and reducing overall system complexity.
Solution Approach 2:
The motor serves itself by generating vibration warnings through its own torque modulation capability. The motor's natural ability to produce torque variations is utilized to create haptic feedback without requiring external specialized components, allowing the system to use its own resources for dual purposes.
2Reliability
If additional devices are installed to generate haptic vibration feedback, then warning effectiveness is improved, but cost increases
Solution Approach 1:
The motor is made to perform multiple functions: both propulsion and haptic vibration warning generation. By modulating the motor torque, the system uses an existing component (the motor) to provide both driving force and warning feedback, eliminating the need for dedicated haptic devices and reducing overall system complexity.
Solution Approach 2:
The motor serves itself by generating vibration warnings through its own torque modulation capability. The motor's natural ability to produce torque variations is utilized to create haptic feedback without requiring external specialized components, allowing the system to use its own resources for dual purposes.
3Adaptability or versatility
If traditional warning subsystems are used, then lane departure warning is provided, but adaptability to various driving scenarios is limited
Solution Approach 1:
The motor is made to perform multiple functions: both propulsion and haptic vibration warning generation. By modulating the motor torque, the system uses an existing component (the motor) to provide both driving force and warning feedback, eliminating the need for dedicated haptic devices and reducing overall system complexity.
Solution Approach 2:
The warning system is made dynamic and adaptable by adjusting motor torque modulation in real-time based on detected driving scenarios. The system can modify the characteristics of vibration warnings (frequency, intensity, pattern) by controlling motor torque, allowing flexible adaptation to different events such as lane departure, traffic interference, or obstacle detection without hardware changes.
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
This approach reduces costs, enhances warning flexibility and user acceptance by using existing electric vehicle components to simulate vibrations, providing effective alerts without additional hardware and allowing for customizable warning patterns based on event severity and driving scenarios.
Implementation Method 1
A method and system utilize the vehicle's motor and friction braking system to control propulsion and braking, generating a torque modulation that creates a haptic vibration alert
Implementation Method 2
A method and system utilize the vehicle's motor and friction braking system to control propulsion and braking, generating a torque modulation that creates a haptic vibration alert
Data Source
AI summary
A drive torque modulation is generated in response to an unintentional lane departure or traffic/obstacle intervention in an electric vehicle or a hybrid-electric vehicle (HEV). At least one of propulsion and braking of the vehicle is controlled via a motor of the vehicle in accordance with the torque modulation. Vehicle oscillation is generated through the torque modulation to let the driver be aware of the impending dangerous driving situation.