Vehicle Damper Phase Control for Ride Comfort and Noise Reduction
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Solution Overview
Problem
Conventional suspension systems face a conflict between ride comfort and driving safety due to harsh damper settings, leading to noise disturbances and inefficient damping control, particularly in single-valve systems.
Innovation Solution
A method that controls vehicle body movement by considering both damper and body movement information, using a sensor system to determine adjustment parameters for phase-accurate damper control, allowing smoother and harmonious vehicle operation without harsh switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-frequency switching of dampers is used in skyhook controller approaches, then body movement control is improved, but noise perception increases and sensor latencies cause measurement inaccuracies
Solution Approach 1:
The patent applies dynamics by continuously adapting the damper control strategy based on real-time phase information between body movement and damper movement. Instead of fixed high-frequency switching, the system dynamically adjusts damping forces according to the instantaneous phase relationship, allowing optimal body movement control while avoiding the noise and inaccuracies associated with rigid high-frequency switching protocols.
2Object-affected harmful factors
If damper switching is softened to reduce noise, then noise perception is reduced, but body movement control precision deteriorates
Solution Approach 1:
The patent implements feedback by continuously monitoring the phase relationship between body movement and damper movement, and using this information to adjust damping forces in real-time. This closed-loop control enables precise body movement control through phase-accurate damping adjustment without requiring harsh switching, thereby maintaining control precision while reducing noise perception.
3Device complexity
If 1-valve control dampers are used instead of 2-valve dampers, then device complexity is reduced, but control precision over body movement deteriorates
Solution Approach 1:
The patent applies parameter changes by utilizing phase information as a critical control parameter to compensate for the limitations of 1-valve dampers. By continuously adjusting damping forces based on the phase relationship between body and damper movement, the system achieves control precision comparable to 2-valve systems while maintaining the simplicity and cost-effectiveness of 1-valve damper hardware.
Data Source
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AI summary
The invention relates to a method for influencing the movement (8) of a vehicle body (4) of a vehicle (1), wherein body movement information (26) of the vehicle body (4) is determined, comprising: - determining damper movement information (32) of a damper (5) of the vehicle (1); - determining an adjustment parameter (21) as a function of a ratio between the damper movement information (32) and the body movement information (26); - providing the body movement information (26) as a first input variable (19) to a control and/or regulating unit (18), and providing the determined adjustment parameter (21) as a second input variable (20) to the control and/or regulating unit (18); - determining a control signal (23) as a function of the first and the second input variables (19, 20) and providing the control signal (23) as an output variable (22) of the control and/or regulating unit (18);and - controlling the damper (5) with the control signal (23), thereby influencing the movement (8) of the vehicle body (4). Furthermore, the invention relates to a computer program, a control and/or regulation system, and a vehicle (1).