What is Anti-Lock Braking and How Does ABS Work?

Nowadays, almost all modern vehicles use an anti-lock braking system. This system prevents such accidents where you lose steering control when you press the brakes with ABS. You will be able to steer the vehicle properly and reduce the braking distance. First of all, we need to understand the principles of steering and braking. When you press the brake pedal, the brake pads on the wheel discs will come into play. and it will put pressure on the discs and this will stop the wheels from rotating as the wheels stop, this causes slippage between the wheels and due to this friction the vehicle stops.

Steering Mechanism of Cars :

The simple principle of rolling the wheels will always try to prevent the wheels from slipping on the road; This means that the speed of the wheel at the point of contact will always be zero. Wheels have two types of motion in which they rotate on their own axis and also move along the direction of the car due to these two types of motion, for non-slip rolling conditions there are two types of translational and rotational speeds, the sum of translational and rotational speeds at the point of contact should be zero, just keep this simple principle Keep in mind and you will understand the steering mechanism in a car very easily, all four wheels are required at all times to prevent the vehicle from skidding. In fact, this simple rolling principle is why your car turns when you turn the front wheels. Examine this, let’s assume a hypothetical situation where the car continues straight even after the wheels rotate, in this case the rolling speed will be inclined as shown and the translational speed will remain flat, so if you add these two speeds the resulting speed will not be zero. This will cause the car to skid the only way to avoid this is to make the translational velocity also slope this is only possible when the whole car makes a turn as shown this is only possible when the car makes a turn at the instantaneous center shown so that all four wheels can meet it you can clearly see the rolling situation from this snapshot.

What is Anti-lock Brake?

Even if it stops the wheels turning there will be no turning speed because they are not turning, in this case the car will not need to turn because this has become a normal braking situation, the car will no longer react to the driver’s steering changes and will cause another accident other than losing control of steering cars without ABS in a straight line It faces one big problem, when the left and right wheels are on different traction surfaces, breaking on surfaces with different levels of traction, applying the brakes will create different friction. The forces acting on the wheels will produce this torque and the car will enter an uncontrollable spin.

How does the ABS Locking brake System Work?

An anti-lock braking system is very simple What ABS does is to prevent the wheels from completely locking The ABS system involves speed When sensors installed on all wheels detect that a wheel is about to lock a modulator unit partially releases the brake pad on that wheel, allowing the wheels to rotate intermittently during braking , you can see the effect immediately. Intermittent wheel rotation on the steering here will be the rotational speed component of the wheels, this will definitely allow the steering to work and the driver will be able to steer the vehicle even during braking but the big question here is what will be the action of intermittent release of the brakes. To get the answer to this question: reduce braking distance, we first need to understand how the coefficient of friction between the tire and the road changes according to slipping under perfect rolling conditions; However, when the wheel is in motion, the value of the friction coefficient is almost zero. Once the 100 slip sliding friction comes into play you can expect the friction values to vary like this for other slip levels but since rubber is a complex material it exhibits strange behavior when breaking the coefficient of friction between the tire and the road varies according to: there is a peak value at about 12 percent of the slip rate where The friction coefficient above and below decreases during braking without ABS, the friction coefficient that comes into play is mainly sliding friction, but in ABS braking the smart algorithm adjusts the brake pressure to keep it constant. A slip rate of nearly 12 percent, where the friction value is at its maximum, significantly reduces the braking distance.

What is Electronic Brake ABS System?

Thanks to smart electronic brake distribution, which is a subsystem of Modern ABS, the major imbalance problem of automobiles is returned and this problem can be overcome very easily. It is measured in the ABS yaw rate of the car and the relative slip of each wheel by simply reducing the brake pressure on the wheels with higher grip, we will be able to reduce the friction force produced by these wheels, this will maintain the yaw torque and the whole.



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