Priority-Based Suspension Scheduling for Conflicting Road Conditions
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Solution Overview
Problem
Conventional suspension control methods using navigation information often result in overlapping or conflicting control situations, leading to sudden changes and reduced safety and ride comfort due to frequent continuous control, especially when road surface situations are similar.
Innovation Solution
A priority-based suspension control apparatus and method that utilizes a priority queue scheduler to determine and manage control priorities based on forward situation information, allowing for preferential control of high-priority situations, integrating a suspension system control module to execute control modes accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional suspension control methods process navigation information in simple order, then the control system is easy to implement, but overlapping or conflicting control situations occur leading to sudden changes and reduced safety
Solution Approach 1:
The patent segments the suspension control process by introducing a priority queue scheduler that divides control situations into distinct priority levels. Each road situation (obstacle, curve, slope, etc.) is evaluated and assigned a specific priority level, creating segmented control zones rather than processing all situations uniformly. This segmentation prevents overlapping controls by establishing clear boundaries between different priority levels.
Solution Approach 2:
The patent changes the parameter of information processing from simple sequential order to priority-based ordering. By introducing a priority parameter that ranks different road situations, the system transforms the control sequence from a first-come-first-served basis to a priority-driven basis. This parameter change ensures that critical situations (high priority) are handled before less critical ones (low priority), eliminating conflicts and sudden control changes.
2Speed
If suspension control is performed frequently based on all navigation information, then responsiveness to road conditions is improved, but control heterogeneity increases and ride comfort deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-evaluating and prioritizing road situations before executing suspension control. The priority queue scheduler预先 (in advance) ranks all detected road situations, and the suspension control module executes controls in this predetermined priority sequence. This preliminary ordering ensures that only necessary controls are executed in optimal sequence, reducing unnecessary frequent adjustments while maintaining responsiveness to critical conditions.
Solution Approach 2:
The patent implements periodic action by structuring suspension control as a systematic periodic process: detect road situation → evaluate priority → queue in priority order → execute control → re-evaluate. This periodic structured approach replaces continuous ad-hoc control with rhythmical, predictable adjustments, reducing control heterogeneity while maintaining appropriate responsiveness to changing road conditions.
3Adaptability or versatility
If multiple road situations are processed simultaneously, then comprehensive coverage of road conditions is achieved, but control conflicts and sudden changes occur
Solution Approach 1:
The patent applies local quality by assigning different priority levels (different qualities) to different road situations based on their specific characteristics. Critical situations like obstacles or sharp curves receive high priority, while less critical situations receive lower priority. This local differentiation of quality allows comprehensive coverage of all road conditions while maintaining control stability through hierarchical processing that prevents conflicts between simultaneous controls.
Data Source
AI summary
A priority-based suspension control apparatus includes a priority queue scheduler configured to receive forward situation information of a road, determine a priority of a forward situation that influences behavior of a vehicle, and generate a schedule for controlling a suspension system, according to the determined priority; and a suspension system control module configured to control, at a suspension system control start point before a designated control section is reached, the suspension system according to a suspension control mode outputted on the basis of the schedule generated according to the priority of the forward situation by the priority queue scheduler.