Control of Stepper Motor with Simulink

Hi there!

I have a program that tells the step sequence for a step motor to take. So far, I have been able to make the stepper motor turn clockwise and counter-clockwise. I did this using a repeating sequence stair, where the output is [0,1,2,3], and the sample rate is .01 seconds

Now I want that if I push a button (eg. arduino push button), then the repeating sequence stair logic will operate for 5 seconds. However, the repeating sequence stair logic is a source with no input.

Therefore, my question now is, how do I integrate an if statement so that when the push button is pressed, then the repeating sequence stair logic will initiate for five seconds?

Hardware used:

Arduino Uno

5 Volt DC 28BYJ-48 step motor

Motor Driver Board ULN2003

-----

Thanks, Nick

[Cosimo Mercuro]

Hi Nicky. May you provide me the simulink file? Thanks in advance

[Nicky Man]

Here you are. Let me know if it works or not.

https://drive.google.com/file/d/1ld9JExjWdWl8oDiPtMAot4Wi5-hbVWAa/view?usp=sharing

Regards, Nick

Answer 1

[Cosimo Mercuro]

Hi Nicky. I've the same issue. Have you found any solution? Thanks in advance

[Nicky Man]

Hi Cosimo,

Yes. I added a delay block as an input u2 to the if statement block. I set the delay block to the amount of time I wish for the motor to be delayed. The delay block becomes u1 after this period of time. The logic in the if statement is that if u2 becomes u1, then it will output the constant 8, which stops the stepper motor.

Answer 2

[Michael Goebel]

You could try to implement it with

• stateflow or
• an enabled subsystem or
• look under the mask of the repeating sequence block and adjust it as u want