Predictive Suspension Damping Control for Road-Ahead Vehicle Posture
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Solution Overview
Problem
Conventional electronic control suspension systems for vehicles primarily control damping force based on current driving conditions, resulting in limited improvement in ride comfort and insufficient prevention of vehicle overturning, as they do not account for road conditions ahead of the vehicle.
Innovation Solution
An electronic control suspension system that includes a detection unit to gather information on the road ahead, such as defects, turning states, and acceleration/deceleration needs, and a control unit to adjust damping force in advance to improve ride comfort and prevent vehicle posture issues, using cameras, radars, or lidars for data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electronic control suspension system is controlled based on current driving conditions, then the system structure remains simple, but the ride comfort improvement is limited and the vehicle posture control is insufficient
Solution Approach 1:
The detection unit detects road information in advance before the vehicle encounters the road section. The control unit receives this detected information and adjusts the damping force of the suspension in advance, enabling proactive posture control rather than reactive correction. This preliminary action allows the system to prepare for upcoming road conditions, significantly improving ride comfort and vehicle stability.
Solution Approach 2:
A detection unit is introduced as an intermediary component between the road environment and the suspension control system. This detection unit captures road information (such as road slope, curvature, and surface conditions) and transmits it to the control unit, which then adjusts the suspension damping force accordingly. This intermediary enables the system to anticipate and adapt to road conditions, resolving the contradiction between simple structure and effective control.
2Reliability
If the detection unit and advance control are added to detect road information ahead, then the ride comfort and vehicle posture control are improved, but the device complexity increases
Solution Approach 1:
The detection unit and control unit are designed to handle multiple types of road information (road slope, curvature, surface conditions, etc.) through a unified system architecture. The detection unit can detect various road parameters, and the control unit processes this information to adjust suspension damping force for different driving scenarios. This multi-functionality reduces the need for separate specialized components for each function, thereby limiting the increase in device complexity while maintaining improved ride comfort and posture control.
3Stability of the object's composition
If the damping force is adjusted in advance based on detected road information, then the vehicle posture stability is improved, but the energy consumption increases
Solution Approach 1:
The suspension system dynamically adjusts the damping force based on the detected road conditions and the vehicle's current state. Rather than maintaining a fixed high damping force that would consume excessive energy, the system optimizes the damping force in real-time according to the actual road conditions and vehicle posture requirements. This dynamic adjustment ensures vehicle stability while minimizing unnecessary energy consumption during normal driving conditions.
Solution Approach 2:
The control unit changes the damping force parameter of the suspension system based on the detected road information. By adjusting this key parameter according to road conditions (such as increasing damping force when approaching a bump or slope, and reducing it during normal conditions), the system achieves effective posture control while optimizing energy consumption. The parameter changes are made only when necessary to maintain vehicle stability.
Data Source
AI summary
An electronic control suspension system for a vehicle is proposed. The electronic control suspension system includes a detection unit detecting information on a road in front of the vehicle, an electronic control suspension which damping force is controlled by current, and a control unit is configured to adjust the damping force of the electronic control suspension according to the information detected by the detection unit.