We may have this experience when driving. When we step on the accelerator to the end, the automatic transmission vehicle will take the behavior of downshifting and increasing torque. This is because the automatic gearbox is designed to adjust the gear according to the load of the engine and the depth of the throttle. When the vehicle is climbing a hill or needs to accelerate quickly, the driver will step on the accelerator deeply. At this time, because the engine output torque is not enough, the automatic transmission will automatically lower a gear to increase the torque and increase the speed to assist the driver to accelerate the vehicle the goal of. Therefore, the action that allows the driver to step on the accelerator when encountering a climb or need to accelerate quickly to force the gearbox to automatically downshift is called the Kick down function.
   The working principle of the Hall type is the Hall effect. The relative movement of the magnet and the Hall sensor causes the magnetic induction intensity to act on the Hall sensor to change, causing the output signal to change. VH=KHISB, where KH is the sensitivity of the Hall element, and VH is the Hall potential.
Electronic accelerator pedal/landing/Electronic-accelerator-pedal.html

Electronic accelerator pedal