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Vehicle state parameter determining method and device and automobile

A vehicle state and parameter determination technology, which is applied to vehicle state input parameters, other vehicle parameters, control devices, etc., can solve problems such as low error accuracy and achieve the effect of active control

Active Publication Date: 2018-08-03
BEIJING ELECTRIC VEHICLE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a vehicle state parameter determination method, device and automobile, which solves the problem of low accuracy of the existing vehicle state parameter estimation due to the introduction of errors

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  • Vehicle state parameter determining method and device and automobile
  • Vehicle state parameter determining method and device and automobile
  • Vehicle state parameter determining method and device and automobile

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Embodiment Construction

[0071] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0072] The present invention adopts the extended Kalman filter to realize the existing vehicle state parameter estimation, which will introduce errors and reduce the problem of the accuracy of the estimation result. It provides a method for determining the vehicle state parameter by calling the adaptive unscented Kalman filter to perform Estimate, get a more accurate estimation result.

[0073] Such as figure 1 As shown, a method for determining vehicle state parameters according to an embodiment of the present invention includes:

[0074] Step 101: Obtain current detection parameters of the vehicle;

[0075] Step 102: Construct a vehicle state model according to the preset vehicle model and the detection parameters;

[0076] Step 103: Accord...

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Abstract

The invention provides a vehicle state parameter determining method and device and an automobile and relates to the technical field of automobiles. The vehicle state parameter determining method comprises the steps of obtaining current detection parameters of a vehicle; constructing a vehicle state model according to a preset vehicle model and the detection parameters; and calling self-adaptive unscented Kalman filter to determine vehicle state parameters according to the vehicle state model. According to the vehicle state parameter determining method, a problem that the existing vehicle stateparameter estimation accuracy is low due to introduction of an error is solved.

Description

Technical field [0001] The present invention relates to the technical field of automobiles, in particular to a method, device and automobile for determining vehicle state parameters. Background technique [0002] With the improvement of the economic level, more and more people are buying cars as a means of transportation. Therefore, cars have become an important part of people's lives. Among them, in order to promote the intelligentization of cars and realize the active control of the vehicle based on the vehicle state parameters, it is often necessary to know some vehicle state parameters in advance. However, because some vehicle state parameter sensors are expensive or restricted by technology, they cannot be used in batches on vehicles. Therefore, low-cost signal sensors are used to determine some important vehicle state parameters (such as centroid side slip angle, horizontal Estimation of information such as swing angular velocity and longitudinal vehicle speed has become ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W40/10B60W40/112B60W40/105
CPCB60W40/10B60W40/105B60W40/112B60W2520/10B60W2520/105B60W2520/125B60W2530/00B60W2530/10B60W2540/18B60W2720/00B60W2720/10
Inventor 薛雪代康伟梁海强张蓝文
Owner BEIJING ELECTRIC VEHICLE