Motorcycle Traction Control Using PID Slip Feedback
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Solution Overview
Problem
Existing traction control systems for motor vehicles, particularly single-track vehicles, face challenges in accurately adapting to tire influencing variables due to high complexity and cost associated with sensor systems and complex evaluation algorithms, limiting their effectiveness in maintaining optimal traction and stability.
Innovation Solution
A method utilizing a PID drive slip controller that determines actual and target wheel slips, along with a longitudinal force potential, to adjust wheel drive torque, eliminating the need for expensive sensors and complex algorithms by integrating a low-pass filter to adapt the traction control system to current road conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If expensive sensors and complex evaluation algorithms are used to measure and estimate tire influencing variables, then measurement precision and adaptability are improved, but device complexity and cost increase
Solution Approach 1:
The system uses already available sensor data (wheel speed, vehicle speed) and the PID controller's internal calculations to determine longitudinal force potential, eliminating the need for additional expensive sensors. The system serves itself by utilizing its own operational data for adaptive control
Solution Approach 2:
The patent extracts only the necessary information (longitudinal force potential) from the PID controller's internal calculations without requiring external measurement systems. It takes out the essential control behavior data already present in the system and uses it for adaptation
2Adaptability or versatility
If multiple driving modes are offered to the driver for adapting to different road conditions, then adaptability is improved, but ease of operation deteriorates due to the need for driver selection
Solution Approach 1:
The system dynamically adapts the PID controller parameters in real-time based on the determined longitudinal force potential, automatically adjusting to current road conditions without requiring static pre-defined driving modes or driver intervention
Solution Approach 2:
The system uses feedback from the PID controller's internal state (I component) to automatically adjust control parameters, creating a closed-loop adaptive system that responds to changing conditions without driver input
Data Source
AI summary
Methods, apparatuses, and systems for monitoring traction for a single-track motor vehicle are provided. A PID drive slip regulator regulates the drive slip of at least one driven wheel. An actual wheel slip and a target wheel slip are used as input variables of the PID drive slip regulator. The PID drive slip regulator ascertains a wheel drive torque from the sum of a P component, an I component, and a D component of the PID drive slip regulator and provides the wheel drive torque back to the at least one driven wheel. A transverse force potential, which constitutes the maximally transmissible transversal force of the at least one driven wheel onto a lane under current operating conditions, is determined using the I component of the PID drive slip regulator. The target wheel slip is determined using the transverse force potential.