How to control speed of dc motor using microprocessor 8085?

Answer 1

Here the DC motor is controlled by the

microprocessor (8085). The kit used

was dynalog 8085 kit.

The DC motor is very difficult to

control unlike the stepper motor,

which can be controlled by giving the

appropriate CONTROL WORD.

By knowing the DC motor theory we

know the different methods used to

control the motor, the most primitive

and the once upon a time the most

popularly method was WARDLEONARD

motor speed control, but

this had many disadvantage, so the

world of Electronics brought in the

thyristor control, which were very

flexible and can be employed to use

AC instead of DC cause they had a

inbuilt convertor. The thyristor-based

system is good but when used with Microprocessor based speed controller they are really

good. We have shown the block diagram, circuit diagram used by us to control a small

tape recorder sized motor