Intelligent brake system integrated with wheel speed sensor analysis

Abstract

The invention provides an intelligent brake system integrated with wheel speed sensor analysis, and relates to the field of intelligent control of automobile braking, the intelligent control system comprises a wheel speed signal acquisition module, an intelligent brake controller in hard wire connection with the wheel speed signal acquisition module, and a motor in hard wire connection with the intelligent brake controller; the intelligent brake controller comprises a signal processing module and a motor driving circuit; the signal processing module is used for analyzing the wheel speed according to the four paths of electric signals and the rack displacement and outputting a driving control signal; and the motor driving circuit is used for driving the motor to push the rack to move according to the driving control signal. By analyzing signals of the wheel speed sensor, when the anti-lock function of the ABS of the vehicle fails, the anti-lock function of the ABS of the vehicle does not depend on CAN bus data, wheel speed signals are collected by itself, and when any wheel has a lock trend, pressure reduction is conducted on all the wheels, the wheels are prevented from being locked, and the stability of the vehicle is guaranteed while the speed reduction of the vehicle is achieved.

Description

technical field [0001] The invention relates to the field of intelligent control of automobile braking, in particular to an intelligent braking system integrated with analysis of wheel speed sensors. Background technique [0002] For high-level driving assistance systems, failure backup needs to be implemented, that is, when a single ABS failure occurs in the vehicle, the vehicle can still be pulled over safely through the deceleration path. The realization of this function, in addition to the necessary sensor redundancy, bus redundancy and power supply redundancy, for the intelligent braking system, it is necessary to realize the redundancy of vehicle anti-lock braking. [0003] The conventional servo braking function can be directly backed up by the ESC and the intelligent braking system, but for the vehicle ABS anti-lock function required by my country, the traditional vehicle can only be realized by the ABS ECU, that is, the ABS ECU obtains the wheel speed signal by coll...

AI Technical Summary

Problems solved by technology

[0003] The conventional servo braking function can be directly backed up by the ESC and the intelligent braking system, but for the vehicle ABS anti-lock function required by my country, the traditional vehicle can only be realized by the ABS ECU, that is, the ABS ECU obtains the wheel speed signal by collecting the wheel speed signal. Relative to the motion state of the vehicle body, and control the mechanical braking structure to realize the anti-lock function, however, once the ABSECU fails, the vehicle will lose this function; in order to realize the redundant backup of the ABS function, the intelligent braking system must be able to independently collect the wheel speed signal without relying on CAN bus data to achieve fast vehicle anti-lock braking

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