calculation of delay for stepper motor using 8051

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alarmathi

Joined: 15 Dec 2008
Posts: 5

06 Jan 2009 5:20 stepper motor with 8051

can anyone help me for rotating the stepper motor to an angle of 45`...........
using 8051 microcontroller............!
it will be more useful, if u giv the procedure for the calculation, so that we can calculate the delay for other degrees like 90` , 180` ,... so on............

bobliin

Joined: 29 Dec 2008
Posts: 9

06 Jan 2009 12:12 stepper motor calculations

Hi there,

To rotate the stepper by an angle of 45`, u need to know the step angle of the stepper

say if the step angle is 1.8`, u need to give 25 (45 / 1. Cool

pulses to make the stepper rotate by 45`.

The delay can be varied depending upon ur stepping speed requirements. but if the delay is decreased beyond a level, the stepper simply vibrates instead of rotating. This depends on the stepper motor u use.

coming to 8051 if the oscillator u use is 11.0592 MHz, the machine cycle will be 1.085 microseconds(11.0592 / 12). so a NOP instruction can produce a delay of 1.085 micro seconds.

This is all i know. hope it ll help u.

all the best.

Bhargav