Electronic system of automatic gearbox

The main goal of designing this system is to create safety and comfort, and even to prevent early amortizations of automobiles,
because of human errors, and most important of all to let physically disabled people use their favorite cars in a completely safe
and comfortable way.
Generally this system has 3 kinds of capability:
1. Automatic
2. Semi automatic
3. manual

Automatic:
In this case, gear is in rescue state when it starts to work. By pressing brake pedal at the first moment clutch works and
automatically it changes the gear to 1. By picking up foot from brake pedal, clutch goes up slowly and car starts to move simultaneously. Now, clutch will perform according to engine cycle, it means if we put our foot on the gas pedal, engine cycle will be increased
and if it goes higher than normal defined limitation, clutch will perform and gear will go to the higher gear and so on. Now if we decrease the pressure on pedal and engine cycle goes lower than normal defined limitation, clutch will perform again and goes to a lower gear. Now if the car is moving (for example when it's in gear3) and we tend to brake, engine cycle goes slowly down, and by automatic
performance of clutch will come 1 gear down, and if the driver doesn't pick up his foot from brake, engine cycle will go down to the extent that car stops moving. In order to avoid stopping the car, clutch will perform automatically to be relieved.

Semi automatic
In this case, gears are contrived by keys for all gear by driver to be switched and change the number of gear.

Manual
In this case also the car performs same as other ordinary cars, and gears can be changed manually.

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