Wheel load-based type intelligent sensing four-wheel positioning measurement method

A positioning measurement and four-sensing technology, which is applied in the field of monitoring the safe operation of motor vehicles, can solve the problems of complex operation and lack of four-wheel positioning parameter change trend prediction

Inactive Publication Date: 2010-12-15
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0004] At present, wheel four-wheel alignment usually refers to front wheel alignment, but most modern cars have higher requirements for driving stability due to their high speed. In addition to front wheel alignment, rear wheel alignment is also required, that is, four-wheel alignment; At the same time, the positioning parameters of the traditional four-wheel alignment method are generally measured independently, so tha

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  • Wheel load-based type intelligent sensing four-wheel positioning measurement method
  • Wheel load-based type intelligent sensing four-wheel positioning measurement method
  • Wheel load-based type intelligent sensing four-wheel positioning measurement method

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the present invention clearer, the implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings: .

[0023] This embodiment provides a four-wheel alignment measurement method based on wheel-mounted intelligent sensors.

[0024] see figure 1 , the method includes the following steps:

[0025] Step 101 senses the three-dimensional acceleration of the wheel through the intelligent sensing module;

[0026] Three-dimensional acceleration includes: tangential acceleration, lateral acceleration and centripetal acceleration;

[0027] Step 102 filters, digitizes, and compensates the three-dimensional acceleration signals of the wheel and the vehicle body to obtain more accurate three-dimensional acceleration parameters at the mounting point of the wheel intelligent sensor unit on the surface of the wheel hub (step 103).

[0028] Step 104 uses ...

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Abstract

The invention discloses a wheel load-based type intelligent sensing four-wheel positioning measurement method. The method comprises the following steps of: sensing the three-dimensional accelerations of specific points of wheels by using an intelligent sensing module; acquiring initial attitude angles of the wheels by using the three-dimensional acceleration parameters of the specific points of the wheels and an attitude algorithm and solving positioning parameters of the camber and the front wheel toe-in among the four wheels; establishing a kingpin caster angle and kingpin inclination computation model and solving positioning parameters of the kingpin caster and the kingpin inclination among the four wheels; and merging and analyzing four-wheel positioning parameters of the wheels, namely the camber, the front wheel toe-in, the kingpin caster and the kingpin inclination, to acquire a variation trend of the four-wheel positioning parameters of the wheels. By performing multi-sensor data merging and analysis on the parameters, the wheel load-based type intelligent sensing four-wheel positioning measurement method has the advantages of fully monitoring and predicating a wheel positioning state, ensuring the stability and the safety of automobile driving, reducing the abrasion and the oil consumption of automobiles, improving the steering performance of vehicles and ensuring automatic aligning of steering systems, and is a novel method for wheel positioning measurement.

Description

technical field [0001] The invention relates to a method and a device for monitoring the safe running state of a motor vehicle, in particular to an on-line measurement method for monitoring the four-wheel alignment state of the motor vehicle. Background technique [0002] Motor vehicle operation safety status monitoring technology is the main means to ensure the safe driving of motor vehicles, and it is also the inevitable trend of the development of motor vehicle operation safety detection technology. Use motor vehicle operation safety status monitoring technology to dynamically monitor motor vehicle operation safety status and operating indicators, discover and prevent motor vehicle failures in a timely manner, 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 public welfare technical work related to the safety of the c...

Claims

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Application Information

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IPC IPC(8): G01M17/013
Inventor 刘桂雄张健伟潘梦鹞洪晓斌
Owner SOUTH CHINA UNIV OF TECH
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