Vehicle Lateral Dynamics Control Through Yaw Moment Distribution
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Solution Overview
Problem
Current vehicle dynamics control systems face challenges in coordinating and optimizing yaw moment determination for improved lateral dynamics, leading to conflicts between driving comfort and safety.
Innovation Solution
A method to determine and distribute a target yaw moment into steering, rolling, and drive components, dynamically adjusting individual wheel settings using electrically activated dampers to optimize lateral forces and cornering performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional chassis with fixed damping configuration is used, then manufacturing simplicity is maintained, but driving comfort and driving dynamics cannot be simultaneously optimized
Solution Approach 1:
The patent implements a dynamic chassis control system where damping characteristics are continuously adjusted based on driving conditions. The control system determines target damping forces by evaluating vehicle state (acceleration, braking, turning) and road conditions, then actuates dampers to achieve optimal comfort and dynamics for each situation, resolving the contradiction between fixed configuration simplicity and adaptive performance
Solution Approach 2:
The system changes the damping parameter of the chassis in real-time based on sensor inputs and control algorithms. By dynamically modifying damping forces at each wheel independently, the system adapts to varying driving conditions to optimize both comfort and dynamics, transforming a static system into an adaptive one
2Ease of operation
If independent control of numerous driving dynamics control systems is maintained, then system independence is preserved, but coordination and testing difficulty increases
Solution Approach 1:
The patent integrates multiple driving dynamics control functions into a unified control system that determines target damping forces for each wheel based on a comprehensive evaluation of vehicle state and road conditions. This merged approach coordinates what would otherwise be independent systems, reducing testing and coordination complexity while maintaining the functional capabilities of individual control elements
3Stability of the object's composition
If damping is not regulated in dynamic chassis, then chassis configuration can be optimized for comfort, but stability during acceleration, braking, or turning deteriorates
Solution Approach 1:
The system applies different damping characteristics to different wheels based on local conditions and vehicle state. During acceleration, braking, or turning, the control system independently adjusts damping forces at each wheel to provide stability where needed while maintaining comfort where possible, resolving the contradiction between overall comfort and situational stability
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
Enhances driving safety and performance by optimizing lateral forces and cornering capabilities, balancing comfort and safety through precise control of wheel loads and damping forces.
Implementation Method 1
electrically activated dampers to optimize lateral forces and cornering performance
Implementation Method 2
The damping is stiffened in a targeted manner during acceleration, braking or turning, in order to reduce pitch and rolling motions
Data Source
AI summary
Technologies and techniques for producing a yawing movement in order to control the driving dynamics of a vehicle. A target yawing movement of the vehicle is determined from a target yaw rate preset by a preset steering angle, such that the vehicle can pass through the preset steering angle at the current vehicle speed, and the target yawing movement being divided into a steering yawing movement produced by the steering system, a rolling yawing movement and a drive yawing movement, wherein the rolling yawing movement is divided into individual rolling yawing movements of the individual wheels, which can be variably set.