Vehicle adjusting method and device
An adjustment method and vehicle technology, applied in vehicle components, transportation and packaging, elastic suspension, etc., can solve problems such as adverse effects on handling stability, vehicle yaw motion interference, etc.
Active Publication Date: 2021-07-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
However, the active suspension will also have a certain impact on the dynamic load of the tires when the active force acts on the body, and then because the tire cornering characteristics will affect the lateral force of the tires, it will interfere with the yaw motion of the vehicle. Especially when turning, it will have an adverse effect on the handling stability of the vehicle.
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[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0051] refer to figure 1 , the present embodiment provides a vehicle adjustment method, including the following steps:
[0052] S10: Acquiring performance parameters in the current driving state of the vehicle; the performance parameters include the yaw rate of the vehicle, the pitch angle of the vehicle body, the roll angle of the vehicle body, and the vertical displacement of the center of mass of the vehicle body;
[0053] Specifically, in this embodiment, b...
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The invention discloses a vehicle adjusting method and device. The vehicle adjusting method comprises the steps of obtaining the performance parameters of a vehicle in the current driving state; determining a yaw velocity error and an error change rate according to the yaw velocity of the vehicle and an ideal yaw velocity; determining an active roll moment according to the yaw velocity error, the error change rate and a fuzzy control rule; distributing the active roll moment to each suspension so as to determine the active force of each suspension; determining ideal input force of each suspension; performing weighted summation on each suspension active force and the ideal input force, and determining the input of the active suspension system to a vehicle body; according to the vehicle adjusting method, the active input force of the active suspension system is calculated from the smoothness angle and the control stability angle respectively, the active input force and the control stability are both considered in a weighted summation mode, the vehicle body posture of vehicle driving is improved, and meanwhile the yaw stability during vehicle steering is guaranteed.
Description
technical field [0001] The invention relates to the field of vehicle control, in particular to a vehicle adjustment method and device. Background technique [0002] Compared with the traditional suspension system, the active suspension system can dynamically and adaptively adjust the stiffness and damping of the suspension according to the change of the driving conditions of the car, so that the suspension system is in the best vibration reduction state, thereby improving the driving of the car. smoothness and ride comfort. [0003] In addition to the elastic elements and shock absorbers of the traditional suspension system, the active suspension system also includes a controllable force device, which can adaptively adjust the active force according to the vehicle's motion state and road surface conditions. The active suspension system has been widely used at present, which can significantly improve the ride comfort and ride comfort of the vehicle during driving. However, ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60G17/016B60G17/018
CPCB60G17/016B60G17/0182B60G2400/0511B60G2400/0512B60G2400/05
Inventor 徐瀚赵又群张桂玉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS