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Old February 10th, 2018, 06:18 AM   #16
Peter Nachtwey
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I simply integrated twice
y(t)=2*a *exp(b*t)/b + y`(0)*t+ y(0)
Simple. I don't see a problem.

For the chart please down load RMCTools and look at the on-line
http://deltamotion.com/support/webhe...l_Overview.htm
http://deltamotion.com/products/software/rmctools.php
https://www.bing.com/images/search?q...ools&FORM=IGRE
The curve tools can approximate any function that has one argument.
This is simple. If you can enter your data into an Excel spreadsheet you can then copy and paste the table into RMCTools

If a and b are not constant then an interactive approach is required.
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Old February 13th, 2018, 11:25 AM   #17
Osias1970
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Thanks Peter.
How we chose the controller to implement this the model?
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Old February 13th, 2018, 12:48 PM   #18
isiah_s
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here is how you solve for y:

http://www.sosmath.com/tables/diffeq/diffeq.html

the type of equation you have is called "Homogeneous Linear Equations with constant coefficients"

I really doubt this is what you want to do, hard to find real world problems that match an easy to solve differential equation.
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Old February 14th, 2018, 10:34 AM   #19
Osias1970
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Thanks Isiah for helpful information
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