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Method and apparatus for controlling active suspension

A technology of active suspension and control method, applied in the direction of suspension, elastic suspension, transportation and packaging, etc., can solve the problems of high cost and poor adaptability, and achieve the effect of reducing cost and increasing adaptability

Inactive Publication Date: 2019-04-23
武汉经开科创运营有限公司
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Problems solved by technology

[0003] In view of the above problems, the present invention provides an active suspension control method and device to solve the problems of high cost and poor adaptability of existing active suspension control models

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  • Method and apparatus for controlling active suspension
  • Method and apparatus for controlling active suspension

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Embodiment Construction

[0024] The present invention proposes an active suspension control method and device, which adjusts the damping and stiffness of the active suspension according to the expected driving road conditions of the vehicle, so as to reduce the cost of establishing the active suspension control model and increase the adaptability of the active suspension.

[0025] See figure 1 , the control method of a kind of active suspension that the present invention proposes comprises:

[0026] S1. Use two-dimensional laser radar to scan the road surface in front of the vehicle, and obtain the road surface features of the scanning area of ​​the road section in front of the vehicle.

[0027] Optionally, the two-dimensional laser radar is installed at the front end of the left and right central axis of the vehicle, and the road surface feature is a continuous road surface feature within a preset time period. Let the length of the two-dimensional laser radar scanning range be L, and the vehicle spee...

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Abstract

The invention provides a method and apparatus for controlling an active suspension of a vehicle. The method comprises the following steps: scanning a road surface in front of the vehicle by adopting atwo-dimensional laser radar to obtain road surface characteristics of a scanning area of a road section in front of the vehicle; measuring a steering angle of wheels by using an angle sensor, and predicting running tracks of the four wheels according to the steering angle of the wheels and the geometric characteristics of a vehicle body; extracting road surface track characteristics correspondingto the predicted four wheel running tracks from the scanning area, and acquiring optimal damping parameters and stiffness parameters of the active suspension according to the road surface track characteristics; and adjusting the damping parameters and stiffness parameters of the active suspension after a predetermined lag time by a control unit of the active suspension. By adopting the method andapparatus for controlling the active suspension of the vehicle, the cost for establishing an active suspension control model can be reduced, the adaptability of the active suspension can be improved, and the method and apparatus for controlling the active suspension of the vehicle belongs to the field of automobile control.

Description

technical field [0001] The invention relates to the field of automobile control, in particular to a control method and device for an active suspension of an automobile. Background technique [0002] With the development of the automobile industry and the improvement of people's living standards, people have higher and higher requirements for the comfort of riding in cars. The passive suspension used in traditional cars has been unable to meet people's requirements for comfort under various road conditions due to its non-adjustability. Active suspension is loved by people for its damping adjustability and other characteristics. However, most of the damping and stiffness control methods of the existing active suspension are to adjust the damping of the active suspension by inputting the road load into the pre-set adjustment system according to the load from the road surface that the wheels have been subjected to during the driving of the vehicle. This adjustment method has hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/0165
CPCB60G17/0165B60G2400/82B60G2400/41
Inventor 邹斌黎胜根郭铮李立凯袁守利王海雄
Owner 武汉经开科创运营有限公司
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