2/26/2016 7:32 AM | |
Posts: 5225 Rating: (1185)
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The above note is the best place to start from
I have taken the document from post 2/24/2016 5:20 PM and used a mark-up tool to add commentary and placed in into my old post of 2/25/2016 10:24 PM. I do this reluctantly as I know we (you) are moving in the wrong path. ... I agreed with From your supplied link.. (also works up to 27Vdc?) ...this requires for each direction of movement
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Last edited by: William_B at: 2/26/2016 7:34:18 AMfill up some blanks |
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2/26/2016 1:41 PM | |
Posts: 5225 Rating: (1185)
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Article to read.. (academical: speed curves) http://www.precisionmicrodrives.com/application-notes-technical-guides/application-bulletins/ab-022-pwm-frequency-for-linear-motion-control |
This contribution was helpful to1 thankful Users |
2/26/2016 2:35 PM | |
Posts: 5225 Rating: (1185)
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{Set :: Mentor tone} We program because of the hardware and to compliment it. Case in point... PWM vs PTO when using the H-bridge. Step0 - understand what is asked by the project and what the aims are. Step1 - get to know the hardware and what is required. It does not need to be experimentally proven but it must be 99.5% sure from research at least. - - - in the actual hardware you are using. Step2 - configure the hardware on the PLC. Step3 - create a model (design) of rule based or mathematical formula to give control. Step4 - coding Step5 - test, evaluate, adapt. w PWM links to look at.. |
Last edited by: William_B at: 2/26/2016 8:23:51 PMadd coding related links |
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2/28/2016 7:40 PM | |
Joined: 3/16/2015 Last visit: 10/10/2021 Posts: 1250 Rating: (173) |
Hi engma, With all due respect, I just had to lough. Did you read any of the replies? |
2/28/2016 11:54 PM | |
Joined: 3/16/2015 Last visit: 10/10/2021 Posts: 1250 Rating: (173) |
Hi engma, Here's a summary of the 7 page thread so far: 1- Your motor is not a stepper motor which means you will not be able to "step" the motor. You can "pulse" it as you stated and have some degree of control over the effective voltage applied to the motor and thereby the speed (RPM). You have to decide if that level of control is sufficient for you application. 2-"PTO" technology object provides two outputs, one pulse and one direction. Your interface/driver will need to accommodate that and if it doesn't then you can either modify/ change the interface, or read a couple of posts up, on this very same page, William_B's detailed write-up of how you can use PWM and multiple outputs to control motor direction using your arduino. In this case you will be using a PWM not PTO and you will use duty cycle to control RPM and write code for hardware limits.
Cheers Kal Edit: have a look at this |
Last edited by: Kal.A at: 2/28/2016 11:57:39 PMLast edited by: Kal.A at: 2/29/2016 3:12:28 AM |
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