Lean Vehicle Drive Power Control Using Height Acceleration Feedback
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Solution Overview
Problem
Lean vehicles, such as motorcycles, face challenges in drive power adjustment due to varying tire loads, particularly on undulating road surfaces, leading to unintended drive power adjustments.
Innovation Solution
A controller that adjusts drive power based on wheel and body behavior, utilizing turning posture information and height direction acceleration index values to optimize tire load adjustments during straight and turning situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If drive power adjustment operation is executed based on wheel behavior or body behavior, then drive power can be adjusted according to vehicle dynamics, but unintended drive power adjustments occur due to tire load variations on undulating road surfaces
Solution Approach 1:
The control device continuously monitors height direction acceleration via an acceleration sensor and uses this feedback to dynamically adjust drive power. The execution section determines whether to execute drive power adjustment based on real-time acceleration data, creating a closed-loop control system that adapts to road conditions and prevents unintended power adjustments on undulating surfaces.
Solution Approach 2:
The system changes the control parameter from simple wheel behavior or body behavior to a more sophisticated parameter that incorporates height direction acceleration. By introducing acceleration threshold comparisons and state determination based on acceleration patterns, the system transforms the control logic to distinguish between intentional rider inputs and road-induced vibrations, thereby improving adjustment accuracy.
2Productivity
If lean vehicle operates on undulating road surface, then vehicle can maintain mobility, but tire load varies causing drive power adjustment operation to execute at unintended timing
Solution Approach 1:
The height direction acceleration serves as an intermediary parameter between the undulating road surface conditions and the drive power adjustment decision. The acceleration sensor detects road irregularities, and the execution section uses this intermediate data to determine whether observed wheel or body behavior is due to rider input or road conditions, preventing false trigger of drive power adjustment.
Solution Approach 2:
The system performs preliminary detection of height direction acceleration before executing drive power adjustment. By continuously monitoring acceleration and establishing baseline conditions, the system prepares in advance to distinguish between legitimate adjustment triggers and road-induced false signals, ensuring accurate control timing.
Data Source
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AI summary
The present invention obtains a controller and a control method capable of appropriately adjusting drive power of a lean vehicle. In a controller 20 and the control method according to the present invention, an execution section of the controller 20 executes drive power adjustment operation for adjusting drive power generated to a lean vehicle 1 according to wheel behavior or body behavior of the lean vehicle 1, and the execution section executes the drive power adjustment operation on the basis of turning posture information of the lean vehicle 1 and a height direction acceleration index value as an index value of height direction acceleration generated to the lean vehicle 1.