Motorcycle Controller Adjusting Acceleration by Lean Angle
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Solution Overview
Problem
Motorcycles experience instability and increased risk of falling or departing from a lane during autonomous cruise acceleration due to shifts in their center of gravity and posture, particularly during turns, which complicates adaptive cruise control.
Innovation Solution
A controller that acquires the lean angle of the motorcycle and adjusts the automatic acceleration generated by autonomous cruise acceleration operations in accordance with this angle, thereby controlling the motorcycle's posture and assisting the rider while preventing instability and lane departure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If autonomous cruise acceleration operation is initiated to assist rider's operation, then productivity is improved, but stability of the object's composition deteriorates due to motorcycle falling, lane departure, and adaptive cruise difficulty
Solution Approach 1:
The control system dynamically adjusts the autonomous cruise acceleration operation based on real-time lean angle detection. When the lean angle exceeds a predetermined threshold during turning travel, the system prohibits or modifies the acceleration operation to maintain stability. This dynamic adaptation allows the system to maintain productivity when conditions are favorable while ensuring safety when the motorcycle posture becomes unstable.
2Ease of operation
If autonomous cruise acceleration operation is performed without lean angle consideration, then ease of operation is improved, but reliability deteriorates due to increased risk of falling and lane departure
Solution Approach 1:
The system incorporates continuous feedback from lean angle sensors to monitor motorcycle posture during autonomous cruise operation. The control unit processes this feedback in real-time and adjusts the acceleration operation accordingly. This feedback mechanism maintains ease of operation by keeping the system autonomous while significantly improving reliability by preventing unsafe acceleration during unstable turning conditions.
3Productivity
If automatic acceleration is increased to improve cruise control performance, then productivity is improved, but stability deteriorates when lean angle is large
Solution Approach 1:
The system changes the acceleration parameter dynamically based on the lean angle condition. When the lean angle is within acceptable limits, the system allows higher acceleration for better cruise control performance. When the lean angle exceeds the threshold during turning travel, the system reduces or prohibits acceleration to maintain posture stability. This parameter adaptation resolves the contradiction between performance and stability.
Data Source
AI summary
A controller and a control method capable of appropriately assisting with a rider's operation while suppressing falling of a motorcycle, departure of the motorcycle from a lane, a difficulty of the motorcycle in adaptive cruise, and the like is disclosed.In the controller and the control method according to the present invention, in a control mode to make the motorcycle perform autonomous cruise acceleration operation, automatic acceleration that is acceleration generated to the motorcycle by the autonomous cruise acceleration operation is controlled in accordance with a lean angle of the motorcycle.