Active Suspension Control for Abrupt Road Change Assist
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle suspension systems fail to effectively manage vehicle speed and suspension dynamics when encountering abrupt road changes, leading to potential damage and discomfort for occupants due to sudden impacts.
Innovation Solution
A system that dynamically adjusts brake torque and suspension parameters based on detected road profiles and vehicle position, using sensors and control units to proactively control the vehicle's speed and damping forces before encountering irregularities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the vehicle maintains high operating speed, then productivity is improved, but the vehicle may encounter abrupt road changes causing damage and discomfort
Solution Approach 1:
The system performs preliminary detection of abrupt road changes using sensors (camera, LIDAR, radar, ultrasonic) before the vehicle reaches them. Based on detected road profiles and vehicle position, the control unit proactively adjusts brake torque and suspension parameters in advance, allowing the vehicle to maintain higher speeds while preventing damage from upcoming road irregularities.
Solution Approach 2:
The control unit applies preliminary countermeasures by dynamically adjusting brake torque to reduce vehicle speed and modifying suspension parameters before the vehicle encounters the abrupt road change. This preemptive anti-action mitigates the impact forces that would otherwise cause vehicle damage or occupant discomfort.
2Reliability
If the vehicle reduces operating speed before abrupt road changes, then reliability is improved, but productivity decreases
Solution Approach 1:
The system dynamically adjusts brake torque and suspension parameters in real-time based on the detected road profile and vehicle position. Rather than maintaining a constantly reduced speed, the vehicle operates at high speed normally and only adjusts parameters when abrupt road changes are detected, optimizing both productivity and reliability through dynamic adaptation.
Solution Approach 2:
The control unit changes suspension parameters (damping coefficients, spring rates) and brake torque values dynamically based on the severity and position of detected road changes. These parameter adjustments are temporary and targeted, allowing the vehicle to maintain high operating speeds during normal conditions while providing protection only when needed.
3Ease of operation
If suspension parameters are dynamically adjusted, then ride comfort is improved, but device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it processes data from various sensors (camera, LIDAR, radar, ultrasonic), determines vehicle position relative to road changes, calculates optimal brake torque, and adjusts suspension parameters. This multi-functional approach consolidates complexity into a single control unit rather than requiring separate systems for each function.
Solution Approach 2:
The control unit acts as an intermediary between the detection sensors and the suspension/braking systems. It processes sensor data, determines appropriate responses, and coordinates adjustments across multiple vehicle systems, simplifying the overall control architecture by providing a centralized intelligence layer.
Data Source
AI summary
Systems and methods for limiting a current operating speed of a vehicle are disclosed. A position of the vehicle relative to an abrupt road change in front of the vehicle and a current operating speed are determined. Information regarding a profile of the abrupt road change is detected. Based on the determined position and current operating speed, a brake torque output is adjusted to reduce the current operating speed. Based on the profile, suspension parameters associated with the vehicle are dynamically adjusted.