Anti-lock method

Abstract

The invention discloses an anti-lock method, which mainly comprises the following steps: an initial comparison value is measured by experiments; a vehicle acceleration speed an and the wheel speed ofeach wheel are detected in real time, and an analog signal is output; the wheel speed signal of each wheel is transformed into a corresponding acceleration speed signal, wherein, three or more than three acceleration speed signals are transmitted into a programmable control unit through an or gate and simultaneously an signal am with largest value that is acquired from the voltage reversal of theacceleration speed signal of each wheel is output; an and am are transformed into the signals with the same voltage, and the transformed signals are input into the programmable control unit after respectively transformed by A / D, the comparison of an and am is implemented by the programmable control unit, deciding whether to start an anti-lock system according to the comparison result, and correspondingly controlling the increasing and decreasing of brake frequency; the snub brake of wheels is implemented by an electromagnetic-valve-controlled brake implementation unit until a vehicle or a plane stop movement. The invention has simple operation steps, is convenient, economical and practical, and by implementing the continuous snub brake of wheels, the invention can accurately implement anti-lock function and has high security.

Description

technical field [0001] The invention relates to the technical field of vehicle braking control, in particular to an anti-lock braking method suitable for vehicles such as automobiles and airplanes. Background technique [0002] At present, the common automobile hydraulic braking system generally transmits the braking force to the four brake sub-cylinders through the brake master cylinder to slow down or stop the vehicle. When the vehicle brakes suddenly while the vehicle is running, the braking force suddenly increases, causing the four wheels of the car to lock up unevenly, causing the vehicle to slip, making it impossible to control the direction, especially on wet, muddy and gravel roads. The spinning wheels of a car stop due to the brake pressure applied to them by sudden braking. When the wheels are in this blocked state, due to the inertial force of the car, the wheels slide along the running direction, which weakens the friction between the wheels and the road surfac...

AI Technical Summary

Problems solved by technology

Even if the experimental data is obtained, the system will not be able to realize the anti-lock function well if the road conditions change slightly

At the same time, there are still some electronic anti-lock braking systems on the market today. Although pulses are used to control the braking frequency, due to various complicated factors in practice, especially the required braking frequency is different under different road conditions, it cannot be very different. Accurately realize the anti-lock braking function, but there are also potential safety hazards

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