Vehicle Braking Control Device Resonance Feedback
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Solution Overview
Problem
Existing vehicle braking systems, particularly electrical braking systems with anti-lock braking systems (ABS), face challenges in informing drivers that ABS is engaged, especially during sudden braking, and adding a vibrator to indicate ABS operation increases component costs and complexity.
Innovation Solution
A braking control device with an anti-lock controller and a resonance controller that generates controlled resonance in the power transmitter to inform the driver of ABS engagement without additional vibrators, using a resonance generation processor to limit resonance magnitude during ABS operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If ABS is applied to electrical braking system with display warning, then driver recognition of ABS operation is improved, but driver response time deteriorates in sudden braking situations
Solution Approach 1:
The patent applies mechanical vibration by generating controlled resonance in the power transmitter during ABS operation. This causes the brake pedal to vibrate, providing immediate tactile feedback to the driver that ABS is active, eliminating the delay associated with visual display recognition.
2Loss of information
If a vibrator is added to cause pseudo vibration of brake pedal, then driver recognition of ABS operation is improved, but device complexity and component costs increase
Solution Approach 1:
The patent employs self-service by utilizing the existing power transmitter and its resonance characteristics to generate the vibration feedback. The system uses the natural resonance properties of the power transmitter itself, eliminating the need for separate vibrators or additional components to provide tactile feedback.
Solution Approach 2:
The power transmitter serves multiple functions: it transmits braking torque to the wheels and simultaneously generates tactile feedback through controlled resonance. This multi-functionality eliminates the need for dedicated vibration-generating components.
3Loss of information
If resonance is generated in power transmitter during ABS, then driver recognition is improved, but system stability deteriorates without magnitude limitation
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the magnitude of resonance generation based on the ABS operation state. The control system modulates the resonance intensity to provide sufficient tactile feedback while preventing excessive vibration that could compromise system stability or cause discomfort.
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
Enables drivers to recognize ABS operation without additional components, maintaining system stability and reducing costs by using controlled resonance to transmit vibration during ABS engagement, thus enhancing driver response to braking without unnecessary hardware.
Implementation Method 1
a resonance generation processor configured to generate the resonance while imposing a limitation on magnitude of the resonance
Data Source
AI summary
A braking control device for a vehicle includes an anti-lock controller and a resonance controller. The anti-lock controller is configured to perform an anti-lock control that includes making an adjustment to the braking torque command, to cause suppression of one or more wheels from being locked during braking of the vehicle. The resonance controller is configured to correct the braking torque command, to control resonance of a power transmitter. The resonance controller includes a resonance generation processor that is configured to generate the resonance while imposing a limitation on magnitude of the resonance. The resonance controller is configured to suppress the resonance except during the anti-lock control, and allow the resonance generation processor to generate the resonance while imposing the limitation on the magnitude of the resonance during the anti-lock control.