Ramp generator and a sylinderic arm

[Spatpatia]

Hello everyone!

I am doing a paper on a hydrulic pump system. There we have a switch which we need to regualte with a sylinderic arm that is regulate with a computer with labview. It is pretty basic qustion.

1. How do i make a ramp generator which goes by the time, T= 1,5 sec. I have made a drawing of this function saved as PDF.

2.The Ram generator is going to be used to regulate the sylinderic robot arm that regulates the switch. It is basicually the same as the last one. The main problem is how to make a simpel op-amp Is it already made in labview or do i have to make one from scratch.

I am ataching two PDF. One fo the Ramp Generator and the other is for to regulate the arm.

Please take a look a it. and i hope that u understand the drawing and my hand writting

From Sunny

Student at UiA

[Spatpatia]

Here are the PDF drawing of the function. Oh and yes i am REALLY new to labview. I have done the tutoriols that came along with labview. So keep this in mind.Na if u hae time to explain what the Vi you are uing and where u found it. I really want to know and understand everything about this system converted into labview.

From

Sunny

Message Edited by Spatpatia on 04-28-2009 12:20 PM

[smercurio_fc]

LabVIEW is not a circuit simulator, so you're not going to find any "op-amp" function. Think of LabVIEW like C. No "op-amp" statements in C either.

That said, if you need to do circuit simulation then you can either:

• buy the LabVIEW Control Design and Simulation Module at a cool $3100 US. 
• write out equations that simulate your circuit and write code that implements these equations. 

In your particular case you seem to have an op-amp that's just a switch. The output is either 1 or -1. Well, that can be implemented in code with a simple Select function. I don't understand how the ramp generator is supposed to tie into your op-amp circuit.

Your circuit seems a bit too simplistic to me. I suspect there's more to this story...

[Spatpatia]

Hello ! Thanks for the replay.

There is more to the story of course but that is something i will find out and build later write now we just need to find out how to build a "op amp" function. 

So i have to  select simple function. The ramp generator will tie to the op-amp after servel other connection right now i have to build them seperatly and test them out.

So do i use formula to make the function of a op amp or do i use something else?

From 

Sunny

[Coq_Rouge]

something like this perhaps

Message Edited by Coq rouge on 04-29-2009 10:21 AM

[Spatpatia]

Hey!

thanks for the example. I have made a flow chart to demostrate what i am trying to build in labview. Just to explainin short ow i am trying to build it. We will get a signal inn.The signal we are getting are the position of the accuator ( the arm i was talking about). which is clock wise (CW) moving it on positive way and anit clock wise ( CCW). We will get the presure as well we have sensors for that.

The rest u can see. I will try the example u gave me and see if i can use that. 

Again thanks for all your help