Suspension Damping Control for Brake-Free Vehicle Yaw Correction
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Solution Overview
Problem
Existing vehicle control methods that adjust traveling direction through braking consume excessive energy and cause abrasion of the braking system, and fail to provide flexible control during steering.
Innovation Solution
A suspension control method that adjusts the deformation parameter, particularly the damping of the shock absorber, to align the vehicle's actual yaw velocity with the desired yaw velocity, reducing the need for braking and enhancing control stability and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If braking measures are used to adjust traveling direction, then vehicle direction control is achieved, but energy consumption increases and braking system abrasion occurs
Solution Approach 1:
The patent changes the physical parameters of the suspension system by adjusting the deformation parameter (such as damping coefficient or spring stiffness) to control vehicle attitude and traveling direction. This replaces the traditional braking method with a suspension parameter adjustment method, thereby reducing energy consumption and avoiding braking system wear while achieving direction control.
2Ease of operation
If braking measures are used to adjust traveling direction, then vehicle direction control is achieved, but braking system abrasion occurs
Solution Approach 1:
The patent adjusts the deformation parameter of the suspension to control vehicle direction, thereby eliminating the need for braking operations. This approach prevents braking system abrasion and extends the durability and reliability of the braking system while maintaining effective direction control capability.
3Use of energy by moving object
If deformation parameter of suspension is adjusted, then traveling direction is controlled without braking, but control precision must be maintained
Solution Approach 1:
The patent employs feedback control by determining an association relationship between predicted yaw velocity and the deformation parameter of the suspension. The system continuously monitors the deviation between desired and predicted yaw velocities, and adjusts the deformation parameter accordingly to minimize this deviation, thereby maintaining high control precision while conserving energy.
Solution Approach 2:
The patent determines the association relationship between predicted yaw velocity and deformation parameter in advance based on vehicle status parameters. This preliminary determination allows the system to proactively adjust the suspension deformation parameter to achieve the desired yaw velocity, improving control precision before deviations occur.
4Measurement precision
If association relationship is determined based on multiple status parameters, then control accuracy is improved, but system complexity increases
Solution Approach 1:
The patent uses multiple existing vehicle status parameters (lateral acceleration, side slip angle, steering angle, longitudinal speed, roll angle, roll angle velocity) that are typically already measured by the vehicle's sensor system. By utilizing these multi-functional parameters for determining the association relationship, the system achieves high prediction accuracy without significantly increasing overall system complexity, as these parameters serve multiple control functions.
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 method effectively adjusts the vehicle's traveling direction without braking, conserving energy, reducing braking system wear, and improving control stability and comfort by aligning predicted and desired yaw velocities.
Implementation Method 1
the suspension includes a shock absorber, and the deformation parameter of the suspension includes damping of the shock absorber
Data Source
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AI summary
A suspension control method is provided. The suspension control method includes: determining that a vehicle performs steering; and adjusting a deformation parameter of a suspension in response to the determining of the steering, to adjust a traveling direction of the vehicle. Further, a suspension control apparatus, a computer program storage medium, a chip, and a vehicle are provided. When the vehicle performs steering, the traveling direction of the vehicle is adjusted by controlling the deformation parameter of the suspension of the vehicle without performing braking measures. This avoids large energy consumption and abrasion of a vehicle braking system.