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Unread 09-04-2013, 23:09
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Re: Question about encoders to control motor

Quote:
Originally Posted by Vikingtech2054 View Post
...I have played around with encoders on an old robot i had played with them and understand how they work. Although i need help using the rpm from the encoder to control the shooter speed
I currently use Labview as a programming language
What i am looking for is an example or VI that will automatically adjust the speed of the shooter to the desired rpm by using the information from the encoder. (if its going fast enough or to fast)... If you can help me or give me an example how to use the encoder to control the shooter that would be great. Thanks
First things first:

- What model encoder are you using?

- What motor(s) are you using?

- What motor controller(s) are you using?

- What is the gear ratio from your motor output shaft to the shooter wheel?

- Where is you encoder mounted? (i.e. is it measuring the motor output shaft speed, or the wheel speed, or something in-between)

- How are you decoding the raw signal from the encoder? (i.e. do you have it set up as a counter or an encoder, and are you reading counts or period)

- What is your desired shooter wheel speed (aka "setpoint")

Answering those questions will improve your chances of getting correct advice.