Variable-Damping Roll Control for Uneven-Road Wheel Articulation
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Solution Overview
Problem
The existing roll control systems that connect right and left wheels using a stabilizer bar face challenges in versatility, particularly when navigating uneven road surfaces, leading to instability in vehicle body behavior.
Innovation Solution
A roll control system comprising first and second components connected to the vehicle body and wheels via connecting devices, with a damper having reciprocating components that adjust damping force based on vehicle speed and roll angle to enhance wheel movement flexibility and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a stabilizer bar is used to connect right and left wheels, then vehicle body stability is improved on flat roads, but wheel movement flexibility deteriorates on uneven surfaces
Solution Approach 1:
The patent applies parameter changes by using a damper with variable damping force instead of a fixed-rigidity stabilizer bar. The damping force is dynamically adjusted based on vehicle operating conditions (speed, steering angle, suspension displacement) to provide high stability on flat roads and high flexibility on uneven surfaces, thereby resolving the contradiction between stability and adaptability
Solution Approach 2:
The patent transforms the static stabilizer bar into a dynamic system by introducing a controllable damper. The damper's damping force changes dynamically according to real-time vehicle states, enabling the system to adapt between rigid (for stability) and flexible (for adaptability) modes, thus resolving the contradiction
2Speed
If a stabilizer bar restricts independent wheel movements, then roll behavior is controlled at high speed, but vehicle body behavior becomes unstable on uneven road surfaces
Solution Approach 1:
The patent makes the roll control system dynamic by using a damper whose damping force can be adjusted in real-time. At high speeds on flat roads, high damping force provides stable roll control, while on uneven surfaces, reduced damping force allows wheels to move independently, maintaining vehicle body stability and resolving the contradiction
Solution Approach 2:
The damping force parameter is dynamically changed based on vehicle speed and road conditions. The control unit adjusts the damping force to be high at high speeds for roll stability, and low when detecting uneven surfaces to allow wheel movement, thereby resolving the contradiction between high-speed performance and reliability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system improves vehicle stability on flat surfaces while allowing greater wheel movement on uneven terrain, enhancing overall versatility and safety by dynamically adjusting damping force.
Implementation Method 1
a damper connected to the first component and the second component. The damper includes a first damper component and a second damper component reciprocatably connected to the first damper component
Data Source
AI summary
A roll control system for a vehicle capable of improving the versatility compared to the related art is obtained. A roll control system according to the invention includes: a first component connected to a right connecting device that connects a vehicle body and a right wheel; a second component connected to a left connecting device that connects the vehicle body and a left wheel; and a damper. The damper includes a first damper component and a second damper component reciprocatably connected to each other. The first component includes a first base portion rotatably held by the vehicle body, a first wheel-side arm portion rotatably connected to the right connecting device, and a first damper-side arm portion rotatably connected to the first damper component. The second component includes a second base portion rotatably held by the vehicle body, a second wheel-side arm portion rotatably connected to the left connecting device, and a second damper-side arm portion rotatably connected to the second damper component.