Weight and slope calculation method of pure electric commercial vehicle based on three-axis accelerometer

A technology of axial acceleration and calculation method, which is applied in the field of weight and slope calculation of pure electric commercial vehicles based on three-axis accelerometers, and can solve problems such as inability to perform measurements

Active Publication Date: 2021-03-26
SHAANXI FAST GEAR CO
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Problems solved by technology

[0004] In view of the problem that the estimation of vehicle weight and slope in the prior art cannot be measured, the present invention provides a calculation method for the weight and slope of a pure electric commercial vehicle based on a t

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  • Weight and slope calculation method of pure electric commercial vehicle based on three-axis accelerometer
  • Weight and slope calculation method of pure electric commercial vehicle based on three-axis accelerometer
  • Weight and slope calculation method of pure electric commercial vehicle based on three-axis accelerometer

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[0066] Example

[0067] The invention provides a method for calculating the weight and slope of a pure electric commercial vehicle based on a three-axis accelerometer, which is characterized in that it includes the following steps,

[0068] Step 1, obtain the value of the three-axis accelerometer in the VCU controller in the vehicle, and establish a control model;

[0069] Step 2, according to the longitudinal dynamics of the vehicle, the forgetting factor model is established in the forgetting factor recursive least squares method, and the vehicle weight M is obtained by estimating the real-time data through the forgetting factor model;

[0070] Step 3: Substituting the obtained value of the vehicle weight M into the forgetting factor model established by the vehicle longitudinal dynamics in the forgetting factor recursive least squares method, and then estimating the real-time slope value based on the real-time data through the forgetting factor model.

[0071] According to...

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Abstract

The invention provides a weight and slope calculation method of a pure electric commercial vehicle based on a three-axis accelerometer, which comprises the following steps of: establishing a control model by acquiring acceleration values of x, y and z axes of the three-axis accelerometer, estimating the mass and slope of the whole vehicle by a forgetting factor recursive least square method. A mass least square estimation model combining vehicle longitudinal dynamics and acceleration sensor signals is provided to accurately estimate the weight and slope of the whole vehicle.

Description

technical field [0001] The invention relates to the field of pure electric commercial vehicles, in particular to a method for calculating weight and slope of pure electric commercial vehicles based on a three-axis accelerometer. Background technique [0002] In the field of pure electric commercial vehicles, more and more trucks have a wide range of quality changes, and the operating road conditions are becoming more and more complex and changeable. The weight, quality and slope of the vehicle have a great impact on the shift quality of commercial vehicle transmissions, safety systems, etc. There are very important influencing factors, so the estimation of the vehicle weight is also required to be as accurate as possible, and the estimation of the road slope is as accurate as possible. [0003] In terms of estimating and measuring the weight of the vehicle and the slope of the road, it can be measured by installing a measuring instrument on the body, and the weight of the ve...

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Application Information

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IPC IPC(8): B60W40/076B60W40/13B60W50/00
CPCB60W40/076B60W40/13B60W50/00
Inventor 尹欣欣严鉴铂刘义郝刘丹王婧宇王鹏
Owner SHAANXI FAST GEAR CO
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