What are the similarities and differences between ASR and ABS?

Compared with ASR, ABS has similarities and differences.

1。 Similarity between ABS and ASR

(1) By controlling the torque acting on the controlled wheel, the wheel slip is controlled within the set ideal range, thus improving the wheel adhesion utilization rate, shortening the braking distance of the automobile or improving the acceleration performance of the automobile, and improving the driving direction stability and steering control stability of the automobile.

(2) The system is required to have fast response ability to adapt to the change of wheel adhesion.

(3) It is required to reduce the control deviation as much as possible, so as not to cause the vibration of the automobile and transmission system.

(4) The minimum energy consumption is required in the regulation process.

2. The difference between 2.ABS and ASR

(1)ABS can control driven wheels and non-driven wheels, while ASR only controls driven wheels.

(2) During the 2)ABS control period, the clutch is usually in the disengaged state, and the engine is also in the idle state, while during the ASR control period, the clutch is in the engaged state, and the inertia of the engine will have a great influence on the ASR control.

(3) During ABS control, the vibration of automobile transmission system is small, which has little influence on ABS control, while during ASR control, it is easy to make the transmission system vibrate greatly, which has great influence on ASR control.

(4) During ABS control, the interaction between wheels is very small, while during ASR control, the interaction between driving wheels will be great due to the differential.

(5)ABS is only a single-loop system of brake control, with roughly determined reaction time, while ASR is a multi-loop system composed of brake control and engine control, with different reaction times.