Vehicle Suspension Control for Speed-Adaptive Road Shock Prediction
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Solution Overview
Problem
Electronic control suspension systems in vehicles fail to provide accurate and safe suspension control when they do not predict vehicle behavior in response to shocks or do not consider vehicle speed while passing over road surfaces, leading to inadequate ride comfort and stability.
Innovation Solution
A vehicle suspension control apparatus and method that includes a mode determination device to identify the suspension control mode based on the road surface and vehicle speed, using a suspension control amount calculation device to determine the necessary control amount, and a controller to adjust the suspension accordingly, employing modes that vary in control intensity based on count values and speed thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ECS controls suspension without predicting vehicle behavior in response to shocks, then the system structure remains simple, but suspension control accuracy and safety deteriorate
Solution Approach 1:
The system performs preliminary prediction of vehicle behavior in response to shocks before actual suspension control is applied. The prediction unit forecasts vehicle responses to upcoming road conditions, allowing the control system to prepare appropriate suspension adjustments in advance, thereby improving control accuracy without proportionally increasing system complexity
Solution Approach 2:
The control system is divided into distinct functional units: a prediction unit that forecasts vehicle behavior, and a control unit that executes suspension adjustments. This segmentation allows the complex prediction function to be separated from the control execution, enabling improved accuracy while managing overall system complexity through modular design
2Reliability
If the ECS controls suspension without considering vehicle speed, then the control process remains simple, but suspension control accuracy deteriorates
Solution Approach 1:
The suspension control system dynamically adjusts control parameters based on real-time vehicle speed measurements. The control unit modifies suspension characteristics according to the current speed state, enabling accurate control across varying operating conditions without requiring a completely complex restructured system
Solution Approach 2:
The system changes control parameters based on vehicle speed variations. By monitoring speed as a key parameter and adjusting suspension control accordingly, the system achieves accurate control for different driving conditions while maintaining a relatively simple control architecture that adapts through parameter modification rather than structural complexity
Data Source
AI summary
A vehicle suspension control apparatus includes a mode determination device that determines a suspension control mode corresponding to an identified front road surface, in response to the front road surface of a vehicle being identified, a suspension control amount calculation device that calculates an amount of suspension control for passing through the identified front road surface, based on the determined suspension control mode, and a controller that controls a suspension of the vehicle based on the calculated amount of suspension control.