Comments on: Passion for Simulink http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/ This blog is about Simulink. Sun, 22 Nov 2009 23:57:16 +0000 http://wordpress.org/?v=2.3.1 By: Seth http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-666 Seth Sun, 18 Jan 2009 21:06:39 +0000 http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-666 @Dongyun Lu - I am not an expert on the SimPowerSystems blocks, so I don't have any suggestions for you. I saw that <a href="http://www.mathworks.com/matlabcentral/newsreader/view_thread/242301#621282" rel="nofollow">you have posted on the newsgroup</a>, and that is a good place to ask this question. Another option is always technical support. Sorry I couldn't be more help. Good luck! @Dongyun Lu - I am not an expert on the SimPowerSystems blocks, so I don’t have any suggestions for you. I saw that you have posted on the newsgroup, and that is a good place to ask this question. Another option is always technical support. Sorry I couldn’t be more help. Good luck!

]]> By: Dongyun Lu http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-663 Dongyun Lu Wed, 14 Jan 2009 20:46:47 +0000 http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-663 Happy New Year, Mr. Seth. I started doing some work on Simulink and found it is an awesome tool. Right now, I have a problem that I can't found any answer to it,please help me. I am using the switched reluctance motor model which belongs to the SimPowerSystems libray, the simulink version is V2007b. I tried 6/4 motor, 10/8 motor by using the example from the simulink, they worked very well, but for the 8/6 motor, the output is not good. The fluxes of the four phases should follow the same pattern, but for the 8/6, the flux of the fourth phase is weird, I don't know why. Also I want to know how to use the special model of the 8/6 motor, I can't get any information from the internet on how to define the parameter. Please have a look at it. Thanks a lot. Happy New Year, Mr. Seth.
I started doing some work on Simulink and found it is an awesome tool. Right now, I have a problem that I can’t found any answer to it,please help me.
I am using the switched reluctance motor model which belongs to the SimPowerSystems libray, the simulink version is V2007b. I tried 6/4 motor, 10/8 motor by using the example from the simulink, they worked very well, but for the 8/6 motor, the output is not good. The fluxes of the four phases should follow the same pattern, but for the 8/6, the flux of the fourth phase is weird, I don’t know why. Also I want to know how to use the special model of the 8/6 motor, I can’t get any information from the internet on how to define the parameter. Please have a look at it. Thanks a lot.

]]> By: Seth http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-656 Seth Mon, 12 Jan 2009 14:11:17 +0000 http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-656 @Kevin L. - Thanks for your regular comments and contribution to the blog. I'll send you a shirt! @Kenneth Eaton - I checked out your <a href="http://www.mathworks.com/matlabcentral/fileexchange/authors/30774" rel="nofollow">author profile</a>, good work. I'll send you a shirt.... might you develop a Simulink based game? @Chiew - Are you asking about generating code for a multi-core processor, or utilizing multiple CPUs during your Simulink simulation? RTW uses a single threaded rate monotonic scheduler. Out of the box it wouldn't be able to utilize multiple cores, although it would be possible to customize your scheduler and use mutli-tasking code to get something working. In the case of utilizing more than one core on your desktop or laptop for simulation, this can only be accomplished using the Parallel Computing Toolbox (PCT). Simulink is single threaded and will not use more than one core during a Simulation. If you run in Rapid-Accel mode your simulation will run on it's own core while MATLAB and Simulink run on a separate core, but that doesn't result in the kind of processor utilization I think you are looking for. If you craft a PARFOR command to run a series of simulations across workers, note that you can not call SIM directly. You will need to wrap your sim command in a function call and look out for current directory conflicts across your labs. I hope that answers your question. @Kevin L. - Thanks for your regular comments and contribution to the blog. I’ll send you a shirt!

@Kenneth Eaton - I checked out your author profile, good work. I’ll send you a shirt…. might you develop a Simulink based game?

@Chiew - Are you asking about generating code for a multi-core processor, or utilizing multiple CPUs during your Simulink simulation?

RTW uses a single threaded rate monotonic scheduler. Out of the box it wouldn’t be able to utilize multiple cores, although it would be possible to customize your scheduler and use mutli-tasking code to get something working.

In the case of utilizing more than one core on your desktop or laptop for simulation, this can only be accomplished using the Parallel Computing Toolbox (PCT). Simulink is single threaded and will not use more than one core during a Simulation. If you run in Rapid-Accel mode your simulation will run on it’s own core while MATLAB and Simulink run on a separate core, but that doesn’t result in the kind of processor utilization I think you are looking for. If you craft a PARFOR command to run a series of simulations across workers, note that you can not call SIM directly. You will need to wrap your sim command in a function call and look out for current directory conflicts across your labs. I hope that answers your question.

]]> By: Chiew http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-653 Chiew Fri, 09 Jan 2009 01:16:05 +0000 http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-653 Happy New Year, Mr Seth. My name is Chiew, Nice to meet you. Being doing a lot of work using simulink lately, finding it more and more interesting. I've a problem on multithreading on Simulink, can it be done? Regards Chiew Happy New Year, Mr Seth.

My name is Chiew, Nice to meet you.

Being doing a lot of work using simulink lately, finding it more and more interesting.

I’ve a problem on multithreading on Simulink, can it be done?

Regards

Chiew

]]> By: Kenneth Eaton http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-651 Kenneth Eaton Wed, 07 Jan 2009 01:21:51 +0000 http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-651 I could swear I saw a "MATLAB" license plate some time a while back around here (Cincinnati), but I was driving and didn't get a good look... I don't have a geeky Simulink passion, but I do have a geeky MATLAB passion. As my FEX submissions show, I spend a lot of my free time writing video games using MATLAB. I use it for pretty much everything else I do, so why not my hobby too! Ken I could swear I saw a “MATLAB” license plate some time a while back around here (Cincinnati), but I was driving and didn’t get a good look…

I don’t have a geeky Simulink passion, but I do have a geeky MATLAB passion. As my FEX submissions show, I spend a lot of my free time writing video games using MATLAB. I use it for pretty much everything else I do, so why not my hobby too!

Ken

]]> By: Kevin L. http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-650 Kevin L. Tue, 06 Jan 2009 16:35:24 +0000 http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-650 Happy new year Seth! I have a geeky engineering passion on simulink just like you. So I have a lot of horrible problems on simulink. Can you help me on it? E.g., the questions on "The Answer for Large Scale Modeling: Model Reference". Can you tell me your email address. So I can email you directly. Will you ship a MathWorks T-shirt to me? Ha-ha. Thanks a lot. Kevin Happy new year Seth!
I have a geeky engineering passion on simulink just like you.
So I have a lot of horrible problems on simulink.
Can you help me on it?
E.g., the questions on “The Answer for Large Scale Modeling: Model Reference”.
Can you tell me your email address. So I can email you directly.
Will you ship a MathWorks T-shirt to me? Ha-ha.
Thanks a lot.

Kevin

]]> By: Seth http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-648 Seth Mon, 05 Jan 2009 16:44:02 +0000 http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-648 That picture actually ships as part of an Optimization Toolbox demo since R11 (1999!). So, the age is at least 10 years old. If you want to see the demo, try: <code style="font-size: 11pt;">>> optdeblur</code> That picture actually ships as part of an Optimization Toolbox demo since R11 (1999!). So, the age is at least 10 years old. If you want to see the demo, try:
>> optdeblur

]]> By: Jeff Koechling http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-647 Jeff Koechling Mon, 05 Jan 2009 14:46:29 +0000 http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-647 Nice pictures, and superb use of pristine snow! I recall seeing the Massachusetts license plate "MATLAB" on a different car. Any idea of the age of that photo? Nice pictures, and superb use of pristine snow!

I recall seeing the Massachusetts license plate “MATLAB” on a different car. Any idea of the age of that photo?

]]> By: Seth http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-646 Seth Sun, 04 Jan 2009 13:03:01 +0000 http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-646 Thank you Amin! Thank you Amin!

]]> By: Amin http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-645 Amin Sat, 03 Jan 2009 16:01:14 +0000 http://blogs.mathworks.com/seth/2009/01/02/passion-for-simulink/#comment-645 Happy new year Seth! Although, NowRooz (Persian new year) is in the spring, but i wish you will have a good year! Happy new year Seth!
Although, NowRooz (Persian new year) is in the spring, but i wish you will have a good year!

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