Stepper motor. Stepper Motor Interfacing Stepper motor is a widely used device that translates electrical pulses into mechanical movement. Stepper motor.

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Presentation transcript:

Stepper motor

Stepper Motor Interfacing Stepper motor is a widely used device that translates electrical pulses into mechanical movement. Stepper motor is used in applications such as; disk drives, dot matrix printer, robotics etc It has a permanent magnet rotor called the shaft which is surrounded by a stator. Commonly used stepper motors have four stator windings Such motors are called as four-phase or unipolar stepper motor..

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Step angle: Step angle is defined as the minimum degree of rotation with a single step. No of steps per revolution = 360° / step angle Steps per second = (rpm x steps per revolution) / 60 Example: step angle = 2° No of steps per revolution = 180.

A switch is connected to pin P2.7. Write an ALP to monitor the status of the SW. If SW = 0, motor moves clockwise and if SW = 1, motor moves anticlockwise SETB P2.7 MOV A, #66H MOV P1,A TURN: JNB P2.7, CW RL A ACALL DELAY MOV P1,A SJMP TURN CW: RR A ACALL DELAY MOV P1,A SJMP TURN.

Full step.