The Science Behind Anti-Lock Braking Systems (ABS)

Whether it's someone pulling out in front of you or you need to make a turn, you rely on your brakes to slow down and stop your car. Most modern vehicles have an anti-lock braking system (ABS) to keep you safe. Keep reading to learn more about the parts and science behind your ABS.

Wheel Speed Sensor

The speed sensor, made up of a ring with V-shaped teeth and a wire coil/magnet assembly, constantly monitors the speed of each wheel on your car. It uses that information to adjust the speed.

Electronic Control Unit

The wheel speed sensor sends the information it gathers to the electronic control unit to receive, amplify, and filter it. The unit then uses the speeds to apply pressure to the brake.

Hydraulic Control Unit

After receiving the signal from the electronic control unit, the hydraulic control unit applies or releases the brakes. It uses or denies hydraulic pressure to ensure that the brakes don't lock up during the slowing process.

Pulse Modulation

The pulse modulation is a digital waveform that controls the brakes and prevents them from locking. The waveform features "on" and "off" bursts that prevent the brakes from locking up.

Feedback Loops

Based on the wheel deceleration and angular velocity, the feedback loops are able to control the pressure on the brakes and counteract a person slamming their foot down on the brake and having them lock up.

Steering Control

ABS makes it easy to retain control over the steering wheel, allowing you to make adjustments to your path and avoid hitting other cars and debris.

Keep Your ABS in Working Order at Custom Complete Automotive

If you have an issue with your ABS, Custom Complete Automotive has the skills, training, and experience to repair your system. To learn more about our ABS repair or other electrical repair services, contact us today!