Help

[RonaldP]

Hello , I'm a student, new in Labview and have a project task to make some VIs. This VIs are some kind of generators of signals. I tried something but I can't make them. I attached the pdf document. I must make the disturbed signals on page 3 in the table number one.  

Please help.

Thank you in advace.

[Mark_Yedinak]

Please post any code that you tried to write as well as ask specific questions regarding your program. This site is not here to complete your homework assignments for you. We will be more than happy to help you but you need to show what work you have tried and explain what specific issues you are having.

[altenbach]

As a student, you should take the opportunity to also learn how to post a useful question.

"Help" is not a suitable post title, because it applies equally well to 99% of the questions here. Be more specific, e.g. "Generation of disturbed signals" or similar.

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@RonaldP wrote:

I tried something but I can't make them.

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What have you tried? What problems did you encounter? Where did you get stuck?

Do you need help with a specific step or do you want us to drop whatever we are doing at the moment and write this entire project for you for free? 😮

[RonaldP]

I've  attached what I have made,and a picture as I think how It should be. I think that in a mathematical way , the algoritham is good, but don't khow why I can't receive the real output.

I want to make this and afther that with a use of a card to see on a osciloscope.

Maybe I should use another approach ? 

Thanks 

[altenbach]

Clearly, you have some problems with the current default values. Remember that sin accepts rads but your point increment is about ~100-300x pi and all you get is an alias frequency instead.

Your input to the exp function is several thousand, giving you a result near infinity.

I think you should first try to clean up the units of your inputs.

[RonaldP]

As I see in the  pdf document that I atached, everithing is ok with the values and the units, something is wrong with the exp function (I don't know what), if you put 0 (zero) to alpha_osc , (so the exp function doesn't exist) , you will see that there is something that looks like real signals.

Maybe someone can tell me a different approach ,maybe with Simulate Signal Express VI .

Thanks

[altenbach]

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@RonaldP wrote:

As I see in the  pdf document that I atached, everithing is ok with the values and the units, ...

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No, nothing is OK. All you get is an alias frequency. Connect your graph to the data entering any of the sin functions and you can see that it increments much more than one revolution per datapoint.

[RonaldP]

Thanks, but do you know some other way, how to implement this generator. I have no idea.

Thanks again