Motorcycle Speed Control for Stable Automatic Stop and Crawl
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Motorcycles are prone to instability during automatic deceleration, compromising safety due to their inability to stand upright and higher likelihood of falling over when speed decreases.
Innovation Solution
A controller for motorcycles that executes speed control operations based on positional relationships with other vehicles, determining the necessity to stop or crawl, and automatically decelerating regardless of these relationships during first automatic control operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motorcycle is automatically decelerated based on positional relationship with other vehicles, then assistance performance for the rider is improved, but the posture of the motorcycle becomes unstable and safety is compromised
Solution Approach 1:
The system determines the necessity to stop or crawl before executing automatic deceleration. By performing this preliminary assessment based on positional relationship information, the system prepares appropriate deceleration strategies in advance, ensuring that deceleration commands are issued only when safe and necessary, thus maintaining both assistance performance and safety
Solution Approach 2:
The system dynamically adjusts deceleration control based on real-time conditions. During first automatic control operation, the motorcycle is decelerated regardless of positional relationship, but the system continuously monitors and adapts the deceleration profile to maintain posture stability. This dynamic control allows the system to provide strong assistance when needed while preventing instability
2Object-affected harmful factors
If the motorcycle decelerates based on positional relationship information, then collision avoidance is improved, but posture stability deteriorates at low speeds
Solution Approach 1:
The control process is segmented into distinct phases: determination phase (assessing necessity to stop/crawl based on positional relationships) and execution phase (first automatic control operation for deceleration). This segmentation allows the system to separately optimize collision avoidance in the determination phase and posture stability in the execution phase, resolving the contradiction between the two objectives
Solution Approach 2:
The system changes control parameters dynamically during deceleration. During first automatic control operation, parameters such as deceleration rate and throttle control are adjusted to maintain posture stability while achieving the necessary speed reduction. The control parameters are modified based on real-time feedback to prevent posture instability even as speed decreases
Data Source
AI summary
The present disclosure obtains a controller and a control method capable of improving assistance performance for a rider of a motorcycle.A controller for a motorcycle (100) includes an execution section (32) and a determination section (33). The execution section executes speed control operation to control a speed of the motorcycle on the basis of positional relationship information, which is information on a positional relationship between the motorcycle and another vehicle traveling around the motorcycle. The determination section determines presence or absence of necessity to stop the motorcycle or make the motorcycle become a crawl during travel of the motorcycle. During execution of the speed control operation, in the case where the determination section determines the presence of the necessity, the execution section executes first automatic control operation to automatically stop the motorcycle or to automatically make the motorcycle become the crawl. At least at one time point during the execution of the first automatic control operation, the execution section decelerates the motorcycle regardless of the positional relationship between the motorcycle and the other vehicle.