Automotive quality estimation system and method

A quality estimation and automobile technology, applied in the field of automobile quality estimation system, can solve the problem of inaccurate automobile quality estimation, achieve the effect of reducing the amount of data running, good practicability, and real-time consideration

Inactive Publication Date: 2009-09-30
BYD CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-accuracy vehicle quality estimation system and method to overcome the shortcomings of the prior art that the vehicle quality estimation is not accurate enough

Method used

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  • Automotive quality estimation system and method
  • Automotive quality estimation system and method
  • Automotive quality estimation system and method

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Embodiment Construction

[0050] Below according to accompanying drawing and embodiment the present invention will be described in further detail:

[0051] according to figure 1 and figure 2 , the present invention includes an external data device 1 , an internal parameter device 2 , a slope module 3 , a velocity & acceleration module 4 and a mass center module 5 .

[0052] Such asfigure 1 As shown, the external data device 1 is used to receive the real-time running data of the car and provide it to the slope module 3 and the speed & acceleration module 4 .

[0053] Such as figure 1 As shown, the external data device 1 includes a GPS antenna 11, a gyroscope 12 and an accelerometer 13, wherein the GPS antenna 11 receives GPS raw data and measures the horizontal velocity V of the car. x and vertical velocity V z , and the data is sent to the slope module 3, the gyroscope 12 measures the yaw rate ω of the car, which is used to judge whether the car is running straight, and the data is sent to the spe...

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Abstract

A car quality estimation system and method related to cars, including external data equipment, internal parameter equipment, slope module, speed & acceleration module and mass center module, the external data equipment receives real-time data of automobile operation and provides it to the slope module and speed &acceleration module; the internal parameter device receives the inherent or internal parameters of the vehicle and provides them to the center of mass module; the slope module calculates the slope angle of the vehicle based on the data provided by the external data device and transmits the relevant parameters or data to the speed&acceleration module and the center of mass module; the speed & acceleration module calculates the speed and acceleration of the car according to the data provided by the external data device and the slope module, and transmits the relevant parameters or data to the center of mass module; the center of mass module According to the parameters or data provided by the speed & acceleration module, the vehicle quality is calculated, and the quality information is released to the vehicle driving system. The quality estimation accuracy of the present invention is high, the real-time performance is good, and the practicability is strong.

Description

technical field [0001] The present invention relates to automobiles, in particular to a system and method for estimating automobile quality. Background technique [0002] In U.S. Patent No. 6,839,615, a wheel speed sensor or a wheel angular velocity sensor and an accelerometer are used to draw a "square of speed-wheel torque" figure on the basis of the vehicle driving equation. The slope is the mass of the car and the intercept is The slope of the road uses the speed of the wheels to calculate the speed of the car. Although it has been corrected, it still cannot represent the real speed of the car, and the air resistance and rolling resistance are ignored in the car driving equation, making the estimation of the car's mass inaccurate. . [0003] There are also public documents, such as "Recursive Least Squares with Forgetting for Online Estimation of Vehicle Mass and Road Grade: Theory and Experiments", using the port data specified in SAE J1939, using the recursive least s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G19/08G01M17/007
Inventor 宋佑川
Owner BYD CO LTD
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