Re: SystemModeler Users?
- To: mathgroup at smc.vnet.net
- Subject: [mg129240] Re: SystemModeler Users?
- From: "John Reed" <88ka5qep88 at sbcglobal.net>
- Date: Tue, 25 Dec 2012 02:00:09 -0500 (EST)
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I have the trial version of SystemModeler. I'm trying to model a simple electronic filter circuit. I was able to get a model working showing the spectrum of this filter with Electronic Workbench in about 15 minutes. Then I decided to try SystemModeler to see if it could also do this model. I was hoping I could use some of the Mathematica manipulate and plot routines to see how changing some of the components modified the spectrum. This has not been easy and I have yet to get a spectrum out of it after several weeks of trying. What one would normally do is to use a voltage source that sweeps through a defined range of frequencies to get the spectrum. There is no source like this in SystemModeler that I have been able to find, and I've spent a lot of time looking. The closest I have gotten is to get a step response which could be converted to a spectrum with a Fourier transform. However, I don't see any way to get to a transform in SystemModeler. This system is hard to use. It requires first setting up the model, then running a simulation, then finally going into Mathematica. This is three different programs. The routines in the Mathematica part seem to be limited. Maybe there is a way to get the simulation into a useable form, but I'm running out of patience. I don't plan to purchase this program. John Reed "Comer Duncan" <comer.duncan at gmail.com> wrote in message news:kb1e5u$oum$1 at smc.vnet.net... > Hi, > > I bought SystemModeler a while back. I am wondering whether there are > SystemModeler users on this general list? I have some questions about how > to convert a Berkeley Madonna model to SystemModeler. When I asked > Support at Wolfram I was told that I'd have to buy support if my question > was coming more than 30 days after the purchase, which it definitely is. > So, I am wondering whether anyone has looked into how to relate models in > other formats to SystemModeler, since I guess it is ending up that I will > need to do the conversion myself. Alas, I am a beginner. > > Thanks for your help. Also, I am interested in any ways users out there > are using SystemModeler since such information is usually useful to become > a better user of this software. > > Comer >