Lean Vehicle Brake Control for Stable Cruise Deceleration
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Solution Overview
Problem
Lean vehicles, such as motorcycles, experience instability in posture during deceleration due to cruise control, compromising safety.
Innovation Solution
A controller that adjusts the ratio between front and rear wheel braking forces based on vehicle speed and positional relationship with a preceding vehicle, stabilizing the vehicle's posture during deceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cruise control is applied to automatically control vehicle speed based on positional relationship with preceding vehicle, then driving assistance and safety distance maintenance are improved, but vehicle posture stability deteriorates during deceleration
Solution Approach 1:
The brake control system dynamically adjusts the braking force distribution between front and rear wheels based on real-time vehicle speed and deceleration requirements. The execution section changes the braking force ratio according to speed information, enabling the system to adapt to varying deceleration conditions and maintain posture stability while providing automated speed control assistance.
Solution Approach 2:
The system changes the parameter of braking force distribution ratio between front and rear wheels based on vehicle speed information. By adjusting this parameter dynamically during deceleration, the system prevents excessive pitch motion and maintains vehicle posture stability while implementing cruise control functionality.
2Speed
If braking force is applied during deceleration in cruise control operation, then vehicle speed is reduced to maintain safe distance, but vehicle posture changes in pitch direction compromising safety
Solution Approach 1:
The brake control system dynamically adjusts the braking force distribution between front and rear wheels based on real-time vehicle speed and deceleration requirements. The execution section changes the braking force ratio according to speed information, enabling the system to adapt to varying deceleration conditions and maintain posture stability while providing automated speed control assistance.
Solution Approach 2:
The system uses speed information as feedback to continuously adjust the braking force distribution ratio. By monitoring vehicle speed during deceleration and adjusting the brake force allocation accordingly, the system maintains optimal posture stability while achieving the required speed control for safe following distance maintenance.
Data Source
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AI summary
The present invention provides a controller and a control method capable of improving safety of a lean vehicle. According to a controller (30) and a control method of the present invention, an execution section of the controller executes an operation that causes the lean vehicle to execute a cruise control based on a positional relationship information that is information about a positional relationship between the lean vehicle and a preceding vehicle preceding the lean vehicle. While the operation is enabled by a rider of the lean vehicle, the execution section changes a ratio between a braking force generated in a front wheel of the lean vehicle and a braking force generated in a rear wheel based on a speed information of the lean vehicle.