Shock absorber state detection method and device, automobile and storage medium

A state detection and shock absorber technology, which is applied in the state detection of shock absorbers, vehicles and storage media, can solve the problems of hidden dangers in vehicle safety and the inability to obtain the state of shock absorbers in a timely and accurate manner, and achieve the effect of improving safety

Inactive Publication Date: 2020-09-08
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the shock absorber is in the state of the whole vehicle, it is impossible to obtain the state of ...

Method used

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  • Shock absorber state detection method and device, automobile and storage medium
  • Shock absorber state detection method and device, automobile and storage medium
  • Shock absorber state detection method and device, automobile and storage medium

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Experimental program
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Embodiment 1

[0027] figure 1 It is a flow chart of the steps of a method for detecting the state of a shock absorber provided in Embodiment 1 of the present invention. This embodiment is applicable to detecting the state of a shock absorber in a vehicle, and the method can be executed by a device for detecting the state of a shock absorber. , the device can be implemented in hardware and / or software, see figure 1 , the embodiment of the present invention specifically includes the following steps:

[0028] Step 101, determine the inverse transfer function according to the preset white noise and the preset multi-body dynamics model;

[0029] Among them, the preset white noise can be randomly generated data, specifically the randomly generated wheel center displacement or shock absorber force in the multi-body dynamics model. The preset white noise determines the multi-body The transfer function corresponding to the input parameters and output parameters in the mechanical model. The preset...

Embodiment 2

[0049] figure 2 It is a flow chart of the steps of a shock absorber state detection method provided by Embodiment 2 of the present invention. The embodiment of the present invention is the embodiment of the above-mentioned embodiments. See figure 2 , the shock absorber state detection method of the embodiment of the present invention includes the following steps:

[0050] Step 201: Input preset white noise into a preset multi-body dynamics model to obtain a noise response signal.

[0051] Wherein, the noise response signal may be an output parameter when preset white noise is input as a preset multi-body dynamics model.

[0052] In the embodiment of the present invention, preset white noise is input as an input signal into a preset multi-body dynamics model, and the multi-body dynamics model generates a noise response signal according to the input signal.

[0053] Step 202: Determine the ratio of the preset white noise to the noise response signal as a transfer relationshi...

Embodiment 3

[0080] Figure 5 It is a schematic structural diagram of a shock absorber state detection device provided in Embodiment 3 of the present invention, which can execute the shock absorber state detection method provided in any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method. The device can be implemented by software and / or hardware, specifically including:

[0081] The transfer function module 301 is configured to determine an inverse transfer function according to a preset white noise and a preset multi-body dynamics model.

[0082] The signal acquisition module 302 is configured to determine vehicle suspension displacement signals and shock absorber force signals according to the collected vehicle driving data, the preset multi-body dynamics model and the inverse transfer function.

[0083] A state determination module 303, configured to determine the state of the shock absorber according to the vehi...

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PUM

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Abstract

The invention discloses a shock absorber state detection method and device, an automobile and a storage medium. The method comprises steps of determining an inverse transfer function according to preset white noise and a preset multi-body dynamic model; determining an automobile suspension displacement signal and a shock absorber force signal according to the acquired automobile driving data, thepreset multi-body dynamic model and the inverse transfer function; and determining a state of the shock absorber according to the automobile suspension displacement signal and the shock absorber forcesignal. The method is advantaged in that the automobile suspension displacement and the shock absorber force are determined through the inverse transfer function and the multi-body dynamic model, detection of the shock absorber in the whole automobile state is realized, and automobile driving safety is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of automation control, and in particular to a method, device, vehicle and storage medium for detecting the state of a shock absorber. Background technique [0002] Shock absorbers are important motion control elements in passenger car suspension systems. The main working principle of the shock absorber is to generate different working forces at different working speeds. The corresponding relationship between working speed and working force is called the working characteristic curve of the shock absorber. The operating characteristic curve of the shock absorber has an important influence on the smooth performance of the vehicle operation and the operating load of the supporting structure. Due to the complex structure of the shock absorber, it is difficult to measure the working force of the shock absorber, so the operating characteristic curve of the shock absorber cannot be accurat...

Claims

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Application Information

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IPC IPC(8): B60W50/02B60W50/00
CPCB60W50/0098B60W50/02B60W2050/0043
Inventor 彭亮曹正林赵星明孙佳兴
Owner CHINA FIRST AUTOMOBILE
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