Collision-Triggered Suspension Control for Evasive Maneuvers
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Solution Overview
Problem
Existing vehicle suspension systems face a compromise between isolating occupants from road vibrations and suppressing primary body motion during acceleration and deceleration, leading to suboptimal settings in various driving situations.
Innovation Solution
A control system that modifies vehicle suspension parameters in response to a collision warning signal, increasing stiffness, damping, and roll compensation to enhance stability during evasive maneuvers, utilizing existing semi-active or active suspension features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If suspension settings are optimized for isolating occupants from road vibrations, then comfort is improved, but ability to suppress primary body motion under acceleration and deceleration deteriorates
Solution Approach 1:
The suspension system dynamically adjusts its parameters in real-time based on detected collision risk and vehicle maneuver state. The controller modifies suspension settings from a comfort-optimized state to a performance-optimized state during evasive maneuvers, and reverts afterward, making the system adaptive rather than static
Solution Approach 2:
The system changes physical parameters of the suspension system (stiffness, damping coefficients) in response to collision warning signals. These parameter modifications enable the suspension to suppress primary body motion during evasive maneuvers while returning to comfort-optimized settings during normal operation
2Reliability
If suspension parameters are modified to increase stiffness and damping for collision avoidance, then vehicle control during evasive maneuvers is improved, but ride comfort deteriorates
Solution Approach 1:
The suspension parameter modifications are applied periodically and temporarily only during collision avoidance maneuvers. The system activates modified settings when a collision warning signal is received and an evasive maneuver is detected, then reverts to normal comfort-optimized settings when the maneuver completes or a time period expires
Solution Approach 2:
The suspension parameters are modified in advance when a collision warning signal is received, before the evasive maneuver is fully executed. This preliminary adjustment ensures optimal suspension characteristics are available when the driver initiates the maneuver
Data Source
AI summary
A control system for a vehicle, comprising one or more controllers, configured to receive a collision warning signal, and modify one or more parameters of the vehicle suspension system in response to the received collision warning signal. In this way, the suspension may be automatically configured in a manner which assists the driver in carrying out a vehicle manoeuvre to avoid a potential collision.