Motorcycle Speed Control for Turning Stability
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Solution Overview
Problem
During a turning maneuver, especially at low speeds and maximum steering angles, motorcycles are prone to instability, as drivers must continuously intervene to prevent tipping, and achieving the smallest possible turning radius demands high driver skill and control, with limited ability to counteract tilting through steering alone.
Innovation Solution
A method that continuously monitors the motorcycle's incline using sensor data and adjusts speed through automatic braking or acceleration to match a target incline position, ensuring stability by increasing or decreasing speed based on the incline deviation, with the option to engage higher engine torque or apply brake pressure to maintain or adjust the incline.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver increases speed to counteract tilting towards the inside of the curve during a turning maneuver, then the centrifugal force increases and the motorcycle becomes more stable, but the turning radius increases and the driver loses control over the smallest possible turning radius
Solution Approach 1:
The system continuously monitors the current position of incline using sensors and compares it to the target position of incline. Based on this feedback loop, the control device automatically adjusts speed to maintain the desired incline angle, resolving the contradiction by providing stable control without requiring driver intervention.
Solution Approach 2:
The motorcycle system performs self-regulation by automatically detecting incline deviations and adjusting speed through automatic braking or acceleration interventions. This self-service mechanism maintains stability and optimal turning radius without requiring continuous driver input, allowing the driver to focus on steering while the system manages speed control.
2Reliability
If the driver makes continuous active steering interventions to prevent tipping at low speeds, then the motorcycle remains upright, but the driver workload increases and response time is reduced
Solution Approach 1:
The motorcycle system performs self-regulation by automatically detecting incline deviations and adjusting speed through automatic braking or acceleration interventions. This self-service mechanism maintains stability and optimal turning radius without requiring continuous driver input, allowing the driver to focus on steering while the system manages speed control.
Solution Approach 2:
The system proactively adjusts speed in anticipation of incline deviations by continuously monitoring the current position of incline and comparing it to the target position. This preliminary action prevents tipping before it occurs, reducing the need for reactive driver interventions and improving response time.
3Length of moving object
If the steering bar is positioned at the steering stop to achieve the smallest turning radius, then the turning radius is minimized, but the driver loses the ability to counteract tilting through active steering
Solution Approach 1:
The system continuously monitors the current position of incline using sensors and compares it to the target position of incline. Based on this feedback loop, the control device automatically adjusts speed to maintain the desired incline angle, resolving the contradiction by providing stable control without requiring driver intervention.
Solution Approach 2:
The system replaces the mechanical steering control mechanism with an electronic control system that automatically adjusts speed through braking or acceleration. This substitution allows the steering bar to remain at the stop for minimal turning radius while the electronic system provides the necessary counterbalancing force through speed regulation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method provides automatic stabilization during turning maneuvers by adjusting speed to maintain optimal incline, reducing driver workload and enhancing stability without active driver intervention, ensuring the motorcycle remains upright and stable through automatic speed adjustments.
Implementation Method 1
the current position of incline of the motorcycle is continuously determined from sensor data
Implementation Method 2
the driver can counteract the tilting towards the inside of the curve only by increasing the speed, and thus bringing about a greater centrifugal force
Implementation Method 3
an active braking intervention is carried out at a wheel brake by building up a brake pressure
Implementation Method 4
a higher engine torque can be requested in order to increase the speed and, given a constant steering angle, to also bring about a greater centrifugal force
Data Source
AI summary
In a method for the automatic adjustment of the speed of a motorcycle during a turning maneuver, the current position of incline of the motorcycle is determined and is compared with a target position of incline, the speed being reduced or increased as a function of the difference.