Electric Bike Torque Coordination for Braking and Traction Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric bikes with hydraulic braking systems lack the flexibility to provide a high level of riding comfort and efficient operation, as they require manual intervention for braking and acceleration, limiting the range of torque control and increasing the complexity of driving functions.
Innovation Solution
A method for operating an electric bike that coordinates the controlled generation of braking torque and driving torque, allowing for simultaneous and interdependent regulation to achieve a wide range of acceleration and deceleration, including automatic traction control and wheelie prevention, without requiring active rider intervention, using a hydraulic braking system and a drive unit that can generate motor torque in response to pedal actuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual intervention is used for braking and acceleration, then the braking system remains simple, but the flexibility and riding comfort are limited
Solution Approach 1:
The patent merges the braking system and drive unit into a single coordinated control system. The control unit integrates braking torque and driving torque generation, allowing them to work together rather than independently. This combination enables flexible driving operations like automatic acceleration, deceleration, and torque management without requiring separate manual controls for each function.
Solution Approach 2:
The coordinated control system performs multiple functions through a single integrated mechanism. The same control unit manages both braking and acceleration, enabling the system to adapt to various driving conditions (ascending, descending, level terrain) and provide diverse driving functions (automatic acceleration, deceleration, torque range expansion) without requiring separate dedicated systems for each function.
2Adaptability or versatility
If the torque range is expanded to cover both acceleration and deceleration, then the flexibility increases, but the device complexity increases
Solution Approach 1:
The patent combines braking torque and driving torque into a unified torque management system. By coordinating these two torque types under single control, the system achieves a broad effective torque range that covers both acceleration and deceleration needs, while avoiding the complexity of separate independent control mechanisms.
Solution Approach 2:
The system dynamically adjusts the balance between braking torque and driving torque based on real-time driving conditions. The control unit continuously modulates the contribution of each torque type to achieve the desired total torque, enabling flexible adaptation to varying requirements without fixed operational modes or complex mechanical reconfigurations.
3Extent of automation
If automatic driving functions are implemented, then the rider intervention is reduced, but the control system complexity increases
Solution Approach 1:
The patent integrates multiple automatic driving functions into a single coordinated control framework. The control unit simultaneously manages automatic acceleration, deceleration, and torque distribution by coordinating the braking system and drive unit, reducing the need for separate control systems for each automatic function.
Solution Approach 2:
The system automatically adjusts braking and driving torques based on detected driving conditions without requiring rider input. The control unit monitors the electric bike's state and autonomously regulates the torque output from both the braking system and drive unit to achieve desired acceleration, deceleration, and speed control functions.
4Speed
If the working range is shifted towards lower torques, then the deceleration capability improves, but the acceleration capability may be reduced
Solution Approach 1:
The patent combines braking torque and driving torque in a coordinated manner to achieve both superior deceleration and acceleration capabilities. By allowing these two torque types to work together, the system can apply braking torque for deceleration while simultaneously providing supplemental driving torque when needed, effectively expanding the usable torque range without sacrificing either acceleration or deceleration performance.
Solution Approach 2:
The system dynamically changes the parameter distribution between braking torque and driving torque based on the required total torque. When deceleration is needed, the system increases braking torque contribution; when acceleration is needed, it adjusts the balance to provide sufficient driving torque. This dynamic parameter adjustment allows the system to optimize performance for different operational requirements.
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 enhances riding comfort by enabling flexible and efficient operation, covering a large torque range, allowing for automatic acceleration and deceleration, traction control, and maintaining the bike stationary on inclines, without manual intervention, thereby providing a high level of riding comfort and simplifying driving functions.
Implementation Method 1
the braking system is designed as a hydraulic braking system
Data Source
AI summary
A method for operating an electric bike includes a braking system and a drive unit which is actuable in a controlled manner, with the braking system including an actuator which is actuable in a controlled manner for generating a braking torque in a controlled manner. The method includes generating a braking torque in a controlled manner by way of the braking system and generating a driving torque in a controlled manner by way of the drive unit. The generation of the braking torque in a controlled manner and the generation of the driving torque in a controlled manner are performed simultaneously and depending on one another in order to decelerate the electric bike at a predetermined total braking torque, or to accelerate at a predetermined total driving torque.