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

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...

AI Technical Summary

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 that a comprehensive and comprehensive evaluation of the four-wheel alignment parameters cannot be carried out; in addition, the traditional four-wheel alignment method requires special experiments on the bench, and the operation is more complicated. It is necessary to go to a specific inspection station to conduct experiments, and it also lacks the function of predicting the changing trend of four-wheel alignment parameters

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