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

Active Publication Date: 2007-04-04
BYD CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-accuracy vehicle quality estimation system and

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 FIG. 1 and FIG. 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] As shown in FIG. 1 , the external data device 1 is used to receive the real-time data of the vehicle running and provide it to the slope module 3 and the speed & acceleration module 4 .

[0053] As shown in Figure 1, external data device 1 comprises GPS antenna 11, gyroscope 12 and accelerometer 13, wherein, GPS antenna 11 receives GPS raw data, measures the horizontal speed V of automobile 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 speed & acceleration module 4, and t...

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Abstract

A quality estimation system of automobile is prepared as receiving automobile operation data in real time by external data unit and sending received data to slope module and speed-acceleration module, receiving inherent parameter of automobile by internal parameter unit and sending received data to quality center module, calculating out slope angle of automobile by slope module according to received data and calculating out speed-acceleration by speed-acceleration module according to received data, sending calculated out slope angle and speed-acceleration to quality center module for calculating out quality of automobile there according to received data.

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 quality 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 leas...

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Application Information

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IPC IPC(8): G01G19/08G01M17/007
Inventor 宋佑川
Owner BYD CO LTD
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