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A wheel dynamic balance measurement method based on wheel-loaded intelligent sensor

A measurement method and technology for sensing vehicles, which are applied in the field of safe running state measurement of motor vehicles, and can solve problems such as complex operation and lack of dynamic balance parameter change trend prediction.

Active Publication Date: 2015-08-12
SOUTH CHINA UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0004] Wheel dynamic balance parameters include parameters such as wheel unbalanced mass, unbalanced point phase angle, etc. Vehicles measured with existing wheel dynamic balance parameters need to be tested in a specific repair shop and on a special bench, the operation is more complicated, and there is also a lack of The function of predicting the changing trend of dynamic balance parameters

Method used

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  • A wheel dynamic balance measurement method based on wheel-loaded intelligent sensor
  • A wheel dynamic balance measurement method based on wheel-loaded intelligent sensor
  • A wheel dynamic balance measurement method based on wheel-loaded intelligent sensor

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Embodiment Construction

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in detail with reference to the accompanying drawings:

[0024] This embodiment provides a method for measuring wheel dynamic balance based on a wheel-mounted smart sensor.

[0025] See figure 1 , The method includes the following steps:

[0026] Step 101: Perceive the three-dimensional acceleration of the vehicle body and the wheels through the smart sensor module;

[0027] The three-dimensional acceleration of the car body includes: longitudinal acceleration, lateral acceleration and vertical acceleration;

[0028] The three-dimensional acceleration of the wheel includes: tangential acceleration, lateral acceleration and centripetal acceleration.

[0029] In step 102, the three-dimensional acceleration signals of the vehicle body and the wheels are filtered, digitally converted and temperature compensat...

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Abstract

The invention discloses a method for measuring dynamic balance based on wheel-load type intelligent sensing wheels. The method comprises the following steps of: sensing three-dimensional acceleration of a vehicle body and wheels by an intelligent sensing module; obtaining a three-dimensional acceleration parameter of the vehicle body and the wheels according to a three-dimensional acceleration signal output by the intelligent sensing module, and obtaining a longitudinal velocity of the vehicle body by utilizing the three-dimensional acceleration parameter of the vehicle body through an attitude algorithm; according to a tangential acceleration signal of the wheels, carrying out wavelet denoising on the tangential acceleration signal by utilizing wavelet packets, and obtaining a rotating angle and a rotating angular velocity parameter of the wheels by an STFT (Short Time Fourier Transform) extraction signal characteristic quantity, and outputting the longitudinal velocity of the vehicle body, the rotating angle of the wheels and the rotating angular velocity parameter of the wheels according to a tangential acceleration sensor of the wheels, and obtaining dynamic balance parameters such as unbalanced mass and an unbalanced point phase angle of the wheels by dynamic balance calculation; and carrying out fusion and analysis on the dynamic balance parameters such as the unbalanced mass and an unbalanced point phase angle of the wheels, and obtaining the variation trend of the dynamic balance parameters of the wheels.

Description

Technical field [0001] The invention relates to a method for measuring the safe running state of a motor vehicle, in particular to a method for measuring the dynamic balance of a wheel based on a wheel-mounted intelligent sensor. Background technique [0002] Motor vehicle operation safety state monitoring technology is the main means to ensure the safe driving of motor vehicles, and it is also an inevitable trend in the development of motor vehicle operation safety detection technology. The use of motor vehicle operation safety status monitoring technology to dynamically monitor the operation safety status and operation indicators of motor vehicles, timely detect and prevent motor vehicle failures, develop a safety monitoring network system integrating monitoring, control, management and decision-making, and ensure the safe operation of motor vehicles It is of great significance; it is a major social welfare technical work related to the safety of the life and property of the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/28
Inventor 刘桂雄潘梦鹞高屹
Owner SOUTH CHINA UNIV OF TECH
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