Rear Damper Predictive Adjustment to Prevent End-Stop Impact
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Solution Overview
Problem
Conventional vehicle damping systems fail to appropriately set the rear damping coefficient based on conditions experienced by the front axle or damper, leading to passenger discomfort due to potential 'bottoming out' or hard impacts with end stops.
Innovation Solution
A computer-implemented method determines the rear damping coefficient of a vehicle's rear damper by analyzing the movement of the front damper, the time lag before the rear damper experiences a condition, and the front damping coefficient, to prevent rear suspension impacts with end stops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional damping systems adjust damping coefficients across a group of dampers collectively, then the system maintains simplicity in control, but the rear damper cannot be appropriately set based on front axle conditions, leading to passenger discomfort
Solution Approach 1:
The control system segments the damping control by axle, allowing independent adjustment of front and rear damping coefficients based on respective axle conditions. The controller receives inputs from front and rear acceleration sensors separately and determines damping coefficients for front and rear dampers independently, enabling targeted optimization without complex whole-vehicle control
Solution Approach 2:
The system performs preliminary action by using front axle damping adjustments to predict and prepare for upcoming road conditions that will affect the rear axle. The controller calculates a predicted rear damping coefficient based on front damper movement and time delay, adjusting the rear damper proactively before the rear wheel encounters the same road irregularity
2Stability of the object's composition
If the rear damper uses fixed damping coefficients, then the system maintains stability, but it cannot prevent bottoming out or hard impacts with end stops under varying road conditions
Solution Approach 1:
The system implements dynamic damping coefficient adjustment for the rear damper based on real-time front axle conditions and vehicle state. The controller continuously updates the rear damping coefficient using a predictive algorithm that considers front damper movement, time delay, and current rear damper state, allowing the system to adapt to varying road conditions while maintaining stability through controlled transitions
Solution Approach 2:
The system employs feedback mechanisms by monitoring front damper movement and using this information to adjust rear damper settings. The controller receives feedback from acceleration sensors and damper position sensors, processes this information through predictive algorithms, and adjusts rear damping coefficients accordingly to prevent bottoming out while maintaining system stability
3Reliability
If the system adjusts rear damping based on front damper movement with time delay calculation, then passenger comfort is enhanced, but the device complexity increases
Solution Approach 1:
The system uses copying by replicating the front damper control logic for the rear damper, with the rear control being a time-delayed version of the front control. The controller applies the same predictive algorithm and damping coefficient calculation methodology to both axles, simplifying the overall system design while enabling independent optimization of each axle based on its specific conditions
Data Source
AI summary
Systems, computer-implemented methods, and computer program products relating to jerk of a vehicle damper are provided. According to an embodiment, a system can comprise a memory that stores computer executable components and a processor that executes the computer executable components stored in the memory. The computer executable components can comprise a control signal determination component that determines movement of a front damper of a vehicle, an amount of time between a first time when the movement of the front damper occurs and a second time when a rear damper of the vehicle will experience a condition which caused the movement of the front damper, and a front damping coefficient of the front damper, and determines a rear damping coefficient of the rear damper configured to mitigate rear suspension impact with an end stop caused by rear suspension compression or rebound based on the movement of the front damper, the amount of time, and the front damping coefficient, and a damper adjustment component that adjusts the rear damper to the rear damping coefficient.