Lean Vehicle Drive Power Control on Undulating Road Surfaces
Find Innovative SolutionsGenerate Solutions
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 that hinder the rider's intended control over the vehicle.
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 management, thereby ensuring appropriate drive power 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 controller executes drive power adjustment operation based on feedback from acceleration information detected by the acceleration sensor. The execution section determines whether to adjust drive power by comparing detected acceleration values with predetermined thresholds, creating a closed-loop feedback system that reliably distinguishes between undulating road surfaces and genuine wheel slip conditions, thereby preventing unintended adjustments while maintaining adaptability
Solution Approach 2:
Acceleration information serves as an intermediary parameter between the detection of wheel/body behavior and the execution of drive power adjustment. This intermediary measurement enables the controller to indirectly assess tire load conditions and distinguish between road surface variations and actual slip events, resolving the contradiction between adaptability and reliability
2Reliability
If drive power is adjusted based on wheel behavior, then wheel slip can be prevented, but drive power adjustment timing becomes incorrect due to undulating road surfaces
Solution Approach 1:
The controller performs preliminary assessment of acceleration conditions before executing drive power adjustment. By evaluating acceleration information against predetermined thresholds in advance, the system determines whether wheel slip is actually occurring before adjusting drive power, preventing premature or incorrect adjustments due to undulating road surfaces while maintaining timely response to genuine slip conditions
Solution Approach 2:
The drive power adjustment operation is dynamically controlled based on real-time acceleration conditions. The execution section continuously monitors acceleration information and adjusts drive power only when acceleration exceeds predetermined thresholds, creating a dynamic response system that adapts to changing road conditions and maintains accurate timing for wheel slip prevention
Data Source
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.